Houston-area hurricane season runs June through November, and for most homeowners the storm itself is not the hard part. It is the days afterward without power — no air conditioning in August heat, a refrigerator full of spoiled food, a sump pump that cannot run, and a phone slowly dying.

This is a practical checklist. Part of it is generator-specific, part of it applies whether you own one or not, and there is a timeline at the end so you know what to do when.

Start in spring, not August

The single most useful thing on this page: do your preparation in April or May.

Once a storm has a name and a projected track, everything gets harder. Service technicians book solid. Generator lead times stretch. Propane suppliers back up. Permit offices slow down. Store shelves empty. Every year we take calls from people who want a generator installed before a storm that makes landfall in four days, and the honest answer is that installation realistically takes three to eight weeks including permitting.

Spring preparation costs the same as panic preparation and works considerably better.

If you already have a standby generator

• Schedule annual maintenance before the season, not during it. Oil, filters, plugs, valve adjustment, battery check, and a load test. An April or May visit beats scrambling in late August when every technician in the region is booked.
• Test the transfer switch manually. Remote monitoring catches most problems, but a manual test confirms the switch actually engages cleanly under load.
• Check the battery. Batteries are the most common reason a standby generator fails to start, and they are the cheapest part to replace. Most last three to five years in Gulf Coast heat — sometimes less.
• Confirm fuel supply. On propane, top the tank off before the season rather than after a storm is named. On natural gas, verify your meter is still adequate, especially if you have added appliances since installation.
• Clear the area around the unit. Debris, overgrown vegetation, and stored items too close to the generator create fire and ventilation hazards. Follow the clearances in your manual.
• Watch a weekly self-test. Stand outside for one. You are listening for a clean start, steady running, and a normal shutdown — not hunting, surging, or smoking.
• Verify remote monitoring is actually connected. If your monitoring runs over home Wi-Fi, it goes dark the moment you lose power. LTE-based monitoring keeps reporting during the outage, which is when you want it.
• Know how to manually shut it down. Everyone in the household who might be home alone should know where the disconnect is.

If you are past due on service, our Houston generator maintenance and service page covers what a visit includes.

If you are still deciding on a generator

• Know your critical loads. Before shopping, list what genuinely has to stay on — medical equipment, sump pump, refrigerator, one AC zone — versus what can wait. That list is where a sizing assessment begins.
• Understand the real timeline. Three to eight weeks from signed quote to a commissioned unit, including permitting, inspection, and sometimes a utility gas meter upgrade. Longer once storms are active.
• Get the permit conversation up front. Every installation in this area requires permits. See our guide to generator permits in Houston and Montgomery County.
• Start HOA approval early. In master-planned communities and The Woodlands, architectural review is frequently the longest step in the project.
• Have a portable-generator safety plan for the interim. Never run a portable unit in a garage, breezeway, or any enclosed space, even with the door open. Keep it at least 20 feet from doors, windows, and vents. Carbon monoxide from portable generators kills people after every major storm.

Storm-readiness basics, generator or not

• Water: one gallon per person per day, minimum three days, ideally a week.
• Food: non-perishables that need no cooking, plus a manual can opener.
• Medications: refill prescriptions early in the season. Pharmacies close during outages.
• Power banks: charged, plus a car charger. A battery-powered or hand-crank radio for when cell towers are down.
• Cash: card readers do not work without power or connectivity.
• Full gas tank: fill up when a storm enters the forecast, not after.
• Documents: insurance policies, IDs, and medical information in a waterproof bag, plus photos on your phone.
• Know your evacuation zone. A generator keeps your house running. It does not change an evacuation order. If you are told to leave, leave.

A season timeline

Mistakes we see every year

• Skipping annual service because it ran fine last time. Standby generators sit idle for months. Fuel degrades, batteries weaken, rodents nest in the enclosure. Idle time is what hurts them.
• Assuming the weekly self-test proves everything. The self-test runs unloaded. It confirms the engine starts. It does not confirm the unit can carry your house.
• Adding load after installation. A new EV charger, pool heater, or second AC system can quietly outgrow the generator you sized four years ago.
• Waiting for the forecast. By then you are in line behind everyone else in the region.
• Running a portable unit too close to the house. This is the one that kills people. Twenty feet minimum, never enclosed.

Frequently asked questions

How far in advance should I get a generator installed before hurricane season?

Start in late winter or early spring for a comfortable margin. Between permitting, inspection scheduling, equipment lead time, and possible gas meter upgrades, the realistic window is three to eight weeks — and it stretches significantly once storms are active.

Can a standby generator run during a hurricane, not just after?

Yes, provided it is properly placed and elevated per code. Many homeowners run through the storm itself. Standby units are built for outdoor operation in weather. The limit is flooding, not wind or rain.

How long can a standby generator run continuously?

On natural gas, effectively as long as the gas supply holds — days, with an oil change recommended around the 100-hour mark on extended runs. On propane, runtime is capped by tank size, which is why tank sizing matters for anyone off the gas main.

What happens if my generator fails during an outage?

Check the basics first: battery, fuel supply, and whether a fault code is displayed. Monitoring apps often identify the issue. Then call your service provider — and understand that during a regional outage everyone is calling at once, which is precisely why pre-season maintenance matters so much.

Do I need to turn things off before the generator kicks on?

No. The transfer switch handles it automatically within seconds. If your system uses load management, it sheds and restores large loads on its own.

Will my generator run my air conditioning?

If it was sized correctly for a Houston home, yes — AC is the whole point here. Sizing has to account for compressor startup surge, not just running watts. Our sizing guide explains how that is calculated.

Get ahead of next storm season. Request a free in-home assessment now, while there is no pressure and full installer availability. Already have a unit? Book pre-season maintenance before the calendar fills up.

The post Hurricane Season Prep: Your Backup Power Checklist appeared first on Texas Star Power.

We are a Generac dealer, so you should read what follows with that in mind. What we are not going to do is pretend the other brands are junk. Kohler, Cummins, and Briggs & Stratton all build legitimate standby generators, and for certain homeowners one of them is genuinely the better pick.

What actually matters when you choose a brand is less about the engine than most people expect. Here is an honest comparison, and the one factor we think gets undervalued.

The brands, side by side

Warranty terms and model lineups change. Confirm current specifics with whoever quotes you rather than relying on a table you found online, including this one.

The factor most people underweight: local service

Here is the uncomfortable truth about standby generators. The machine sits outside doing nothing for months at a stretch, then has to start on the worst day of the year. Whether it does comes down to maintenance and repair far more than badge.

Which means the question that matters is not “which brand is most reliable in a lab.” It is: when this unit throws a fault code in August during a five-day outage, who is coming out, and how fast, and can they get the part?

That is where Generac benefits from scale in our market. It holds the largest residential market share in the country, and in the Houston area that translates into more trained technicians, more dealers, and parts sitting on local shelves rather than shipping from a regional warehouse. A less common brand with a slightly better spec sheet is a worse outcome if you wait nine days for a control board.

If you are considering a brand we do not carry, ask them directly: who services this locally, what is your average response time during a regional outage, and do you stock parts in Houston? A good answer there matters more than a spec comparison.

Air-cooled vs. liquid-cooled, across all brands

This choice affects your experience more than brand does.

Air-cooled units cover roughly 7.5 kW through 26 kW. They are less expensive, physically smaller, and appropriate for the large majority of Houston-area homes. Every brand above builds them.

Liquid-cooled units generally start around 32 kW and use an automotive-style cooling system. They run cooler under sustained load, tend to last longer, are quieter for their output, and cost substantially more. For very large homes, or anywhere you expect multi-day runtime at high load, they are the durable answer.

Which side you land on should come out of a load calculation. Our generator sizing guide covers how that works.

Noise, and whether it will bother you

All of these run somewhere in the 60–70 decibel range at a normal property-line distance — comparable to a window AC or an active dishwasher. Kohler has a real edge here and markets it honestly; their enclosures and mounting are engineered for it.

Whether that justifies the price difference depends on your lot. On a half-acre in Montgomery County, probably not. On a tight lot where the unit sits twelve feet from your neighbor’s bedroom window, it might be the deciding factor.

Monitoring and remote features

Every brand now offers some form of remote monitoring. In practice this matters more than people expect, because it is how you learn the unit failed a weekly self-test before a storm rather than during one.

Generac’s Mobile Link is the most mature implementation, with LTE options that keep working when your home internet is down — which, during an outage, it will be. That last detail is easy to overlook when comparing feature lists: Wi-Fi-only monitoring goes dark exactly when you want it most.

Fuel type is a bigger decision than brand

All of these run on natural gas or propane. If you are on a gas main, natural gas is almost always the better choice — unlimited runtime, no tank, no refills, no delivery scheduling during a regional emergency.

If you are not on a main, you are on propane, and then tank sizing becomes part of the design. A 22 kW unit works through propane faster than most homeowners expect, and during a widespread outage delivery trucks are backed up. Size the tank for the outage you are actually worried about.

How to compare quotes across brands

Comparing two bids for different brands is harder than it looks, because the equipment is often the smaller variable. Make sure each quote spells out:

• Exact model and kW rating, not just brand and approximate size
• Transfer switch type, amperage, and whether it is service-entrance rated
• Whether permits and inspection fees are included
• Gas line work, and whether a meter upgrade is assumed or excluded
• Warranty length, what it covers, and specifically who performs warranty service locally
• Whether a maintenance plan is included or extra
• Startup, load testing, and homeowner walkthrough

Our Houston cost guide shows typical installed ranges so you can sanity-check any bid, and the installation process page covers what each stage involves.

Frequently asked questions

Is Generac the best home generator brand?

Generac is the best-supported brand in the Houston market, which for standby power is closely tied to real-world reliability — parts availability and technician access determine how fast you are back up. On pure build quality, Kohler and Cummins are competitive or better in some respects. On warranty length alone, Briggs & Stratton and Champion look better on paper.

Which home generator brand has the longest warranty?

Champion advertises 10 years, the longest among common residential brands. Briggs & Stratton offers 6 years. Generac, Kohler, and Cummins are typically 5. Worth remembering that a longer warranty is only useful if someone nearby can actually perform the service.

Is Kohler quieter than Generac?

Generally yes. Kohler engineers its residential enclosures for lower noise and it is a legitimate differentiator. Whether the premium is worth it depends heavily on how close the unit sits to windows and neighbors.

Does the brand matter more than the installer?

No, and this is the point we would most want you to take away. A correctly sized, properly permitted, well-maintained installation of any reputable brand will outperform a poorly installed premium unit every time. Most standby generator failures trace back to installation or neglected maintenance, not manufacturing.

Can I get parts and service for any brand in Houston?

Availability varies. Generac has the deepest local network. Kohler and Cummins are serviceable but coverage is thinner in outlying suburbs. Less common brands may mean waiting on shipped parts — a real problem in the middle of an outage.

Should I buy a generator online and hire someone to install it?

We would advise against it. Manufacturer warranties frequently require installation by an authorized dealer, sizing errors become your problem, and many installers will not warranty labor on equipment they did not supply. The savings are usually smaller than they appear.

Want a straight recommendation for your home? Request a free in-home assessment. We will do the load calculation and tell you what size you need — and if your situation points toward something we do not sell, we will say so. Ongoing care matters just as much, which is why we also offer generator maintenance and service in the Houston area.

The post Generac vs. the Rest: Choosing the Right Standby Generator Brand appeared first on Texas Star Power.

Every standby generator installation in the Greater Houston area requires permits. There is no version of this where you skip that step, and there is a good reason for it: a generator ties into both your gas supply and your electrical service, and getting either one wrong creates a carbon monoxide or backfeed hazard.

The good news is that permitting is your installer’s job, not yours. What you should understand is what permits are involved, roughly what they cost, how long they add to the timeline, and what happens if someone talks you into skipping them.

Which permits you need

For a typical residential standby generator, expect two:

• Electrical permit. Required everywhere in our service area. Covers the transfer switch, the connection to your service panel, conduit, grounding, and bonding. Must be pulled by a licensed electrical contractor registered with that jurisdiction.
• Gas or plumbing permit. Required in most jurisdictions when a new gas line is run to the unit. In the City of Houston this is handled as a separate single-trade plumbing permit.

Depending on where you live you may also encounter a mechanical permit, a building or site permit if a concrete pad counts as a structure locally, and separate HOA architectural approval, which is not a government permit but can absolutely stop your project.

What it looks like by jurisdiction

Requirements vary meaningfully across the area we serve. This is a general orientation, not a substitute for checking your specific address.

What permits cost (estimated)

Across most Houston-area jurisdictions, permit and inspection fees for a residential standby generator are estimated at roughly $400 to $1,400*. *Estimate only. Fees scale with jurisdiction, the number of trades involved, and sometimes the size of the unit, and jurisdictions change their fee schedules — confirm current amounts for your address.

That figure should already be inside your installed quote. If a bid does not mention permits, ask directly whether they are included or excluded before you sign. Our Houston generator cost guide breaks down where permits fall relative to the rest of the job.

How long permitting takes

This is the part that surprises people. The physical installation is one to three days. The permitting and inspection cycle is what stretches the calendar:

• Permit application and issuance: a few days to about three weeks, depending on jurisdiction and how busy they are.
• HOA or design review: two to six weeks in communities that require it, sometimes tied to a monthly meeting schedule.
• Inspection scheduling after install: several days to two weeks.
• Gas meter upgrade, if needed: two to six weeks on the utility’s timeline, which nobody can accelerate.

Realistically, plan on three to eight weeks from signed contract to a commissioned generator. That window widens considerably once a hurricane is named and everyone in the region calls at once. Getting your paperwork moving in spring is the single easiest way to be ready by peak season.

What inspectors actually check

Inspections tend to focus on a consistent short list:

• Clearances. Minimum distances from windows, doors, soffit vents, and property lines — typically five feet from openings, though local rules vary. This prevents exhaust from getting pulled back into the house.
• Transfer switch installation. Correct type and rating, properly labeled, with no possibility of backfeeding the utility. Backfeed is what kills line workers.
• Grounding and bonding. Done to code, verified.
• Gas line sizing and pressure test. The line has to be sized to deliver adequate volume, and it gets pressure tested.
• Mounting and elevation. Secured to the pad, and in flood-prone areas elevated appropriately.
• Manufacturer requirements. If the install manual is stricter than local code, the manual governs.

What happens if you skip permits

Some homeowners get offered a cheaper cash price to skip the paperwork. It is a bad trade:

• Insurance exposure. If an unpermitted installation contributes to a fire or CO incident, your carrier may deny the claim.
• Problems at resale. Unpermitted work turns up in inspection, and buyers ask for it to be corrected or discounted.
• Warranty risk. Manufacturers can decline warranty coverage on improperly installed units.
• Retroactive enforcement. Jurisdictions can require you to open up finished work for inspection, or remove it.
• No independent verification. The inspection is the one moment a neutral third party confirms the work is safe. That is worth having.

What we handle for you

On our installations we pull the permits, coordinate the inspections, and manage the utility conversation if your gas meter needs upsizing. You do not visit a permitting office. Where an HOA is involved, we provide the documentation and specifications the architectural committee asks for. See our installation process for how this sequences.

Frequently asked questions

Do I need a permit for a whole-house generator in Houston?

Yes. The City of Houston requires an electrical permit, pulled by a registered electrical contractor, plus a plumbing permit for the gas connection. Inspections follow Houston Construction Codes, NFPA standards, and the manufacturer manual, whichever is most restrictive.

Do I need a permit in unincorporated Montgomery County?

Electrical and gas permitting still applies, though much of unincorporated Montgomery County has no countywide residential building code. Incorporated cities within the county set their own requirements. Your installer should confirm based on your exact address.

Who pulls the permit — me or the installer?

Your installer, and in most jurisdictions only a licensed, registered contractor can. If someone asks you to pull an owner permit for work they are performing, treat that as a warning sign.

How much are generator permits in the Houston area?

Estimated at $400 to $1,400 total across the required trades, varying by jurisdiction. Treat that as a planning range rather than a firm figure, and expect it to be included in your installed price.

Does a portable generator need a permit?

A portable unit you roll out and plug into extension cords does not. But if you install a manual transfer switch or an inlet box so it can feed your panel, that electrical work does require a permit — and it should, since that is exactly where backfeed risk lives.

Will my HOA let me install a generator?

Almost always yes, but frequently with conditions on placement, screening, and sometimes noise. Texas law limits how far an HOA can go in prohibiting standby generators, though reasonable aesthetic and location requirements are generally enforceable. Submit for approval early — it is often the longest step.

Ready to get started? Request a free in-home assessment and we will confirm exactly what your address requires, handle the permitting, and give you a realistic timeline. If you are still deciding on equipment, our sizing guide is a good next stop.

The post Generator Permits in Houston & Montgomery County: What Homeowners Need to Know appeared first on Texas Star Power.

Generator sizing is where most homeowners get bad advice. Someone asks how many square feet your house is, names a kilowatt number, and moves on. Square footage is a starting point at best. What actually determines the size you need is your electrical load — specifically the biggest things that start up at once.

Here is how sizing really works, what a proper load calculation looks at, and how to tell whether a quote has sized your home correctly.

The quick version

For most Houston-area homes, the answer falls in one of three buckets:

• Essential circuits only: 10–14 kW. Refrigerator, lights, internet, a few outlets, one AC zone or a window unit.
• Whole home, one AC system: 18–22 kW. This covers the majority of suburban homes in our service area.
• Whole home, two AC systems or heavy loads: 24–36 kW or a liquid-cooled unit.

The 22 kW air-cooled unit is the most commonly installed size in the Houston market, and it is the right answer for a lot of homes — but not automatically for yours.

Sizing by home size and load

Use this as an orientation table, then confirm with a real load calculation.

Why air conditioning drives everything in Houston

In a colder climate, sizing conversations revolve around furnaces and well pumps. Here, it is air conditioning — and not the running load, the starting load.

An AC compressor draws several times its normal running current for the first fraction of a second it kicks on. A 4-ton unit that runs at roughly 4,000 watts can spike well past 10,000 watts on startup. Your generator has to absorb that surge without stalling or browning out everything else in the house.

This is why two homes with identical square footage need different generators. One with a single 4-ton system is straightforward. One with two 3-ton systems that could both call for cooling at the same moment is a harder problem, and the fix is either a bigger unit or smart load management.

What a real load calculation looks at

When we come out, we are not measuring your floors. We are cataloging:

• AC and heat — tonnage of every system, and whether you have electric strip heat or a gas furnace. Electric heat is a large add.
• Water heating — a tankless electric water heater can pull more than everything else in the house combined. Gas water heaters barely register.
• Well and septic pumps — common in Montgomery County and the outlying areas we serve. Pumps have hard starting loads.
• Pool equipment — pumps, heaters, and cleaners.
• Kitchen — electric range and oven, double ovens, cooktops.
• Laundry — electric dryers are a significant load.
• EV charging — a Level 2 charger can add 7–11 kW on its own. This is the fastest-growing reason homeowners outgrow the generator they installed five years ago.
• Medical equipment — oxygen concentrators, CPAP, home dialysis. These change the conversation from convenience to necessity.
• Your main panel — 100A, 150A, or 200A service, and how much headroom is left.

Whole-home coverage vs. managed loads

You have two ways to get there, and the cheaper one is not always obvious.

Size up the generator so it can run everything simultaneously, no restrictions. Simplest to live with, most expensive to buy.

Use load management — smart modules that briefly shed a large load when something bigger needs to start. In practice, your second AC compressor waits a few seconds while the first one comes up. You will not notice, and it can let a 22 kW unit cover a home that would otherwise need a 30 kW.

For a lot of homes, load management is the better value. It is worth asking any installer to price both approaches so you can compare.

The mistake of buying too small

An undersized generator is worse than none at all in one specific way: you find out during the outage. Symptoms include the unit tripping offline under load, lights dimming hard every time the AC starts, and the generator running at full tilt continuously, which shortens its life.

The tempting move is to accept a smaller unit to hit a budget. If that is where you are, the better path is usually a correctly sized generator covering fewer circuits — not an undersized one trying to cover everything.

The mistake of buying too big

Oversizing wastes money up front and runs the engine at very light load, which is not ideal for a generator either. It also means a bigger pad, potentially more gas supply, and higher maintenance costs. Right-sized beats generously sized.

One reasonable exception: if an EV, a pool, or a workshop is realistically in your next few years, size for that now. Adding capacity later means replacing the unit, not upgrading it.

Do not forget the gas supply

Sizing the generator is only half of it. A 22 kW unit needs real gas volume — roughly 200 to 300 cubic feet per hour at load. If your meter cannot deliver that while your furnace and water heater are also running, the generator will starve.

Any competent quote checks meter capacity as part of sizing. If a bid names a kW number without anyone having looked at your gas meter, it is incomplete. Once you know your size, our Houston generator cost guide shows what that configuration typically runs installed.

Frequently asked questions

What size generator do I need for a 2,000 square foot house?

Usually 20 to 22 kW for full whole-home coverage with a single 4-ton AC system. If you have electric heat, a tankless electric water heater, or an EV charger, expect to move up. If you only want essentials, 12 to 14 kW can be enough.

Will a 22 kW generator run my whole house?

For most homes up to about 3,000 square feet with one AC system, yes. With two AC systems it usually can, paired with load management. Homes with electric heat, multiple large loads, or EV charging often need more.

Can I run my air conditioner on a standby generator?

Yes, and in Houston that is the entire point. Central AC needs to be accounted for in the sizing, because of the startup surge. Any generator sized for a Houston home should be sized around the AC first.

How do I calculate my generator size myself?

Add up the running watts of everything you want powered, then add roughly 20% for startup surge and another 20% for future needs. It gets you in the neighborhood. It will not capture compressor inrush accurately, which is where DIY estimates most often come up short.

Does an EV charger change what size I need?

Significantly. A Level 2 charger adds 7 to 11 kW — comparable to a second AC system. If you have an EV or expect one, say so before anyone sizes your unit.

Is it better to oversize a little for future needs?

A modest amount of headroom is sensible, especially if a pool, addition, or EV is likely. Large oversizing costs more up front, runs the engine inefficiently, and does not buy reliability. One size class of margin is usually the right call.

Want this done properly? Request a free in-home assessment. We do the load calculation, verify your gas and panel capacity, and recommend a size based on your actual home — then show you what both the whole-home and load-managed options cost. You can also see how the installation process works start to finish.

The post What Size Generator Do I Need? A Guide for Houston-Area Homes appeared first on Texas Star Power.

If you are pricing a whole-house generator in the Houston area, you have probably already noticed that nobody wants to give you a straight number. There is a reason for that: the final cost depends on how big your home is, what you want to keep running, where the unit has to sit, and how far it is from your gas meter and electrical panel. Still, you deserve a real range before you invite anyone out to your house.

Here is what homeowners in Harris and Montgomery County are actually paying in 2026, what is included in those numbers, and which line items tend to move the price.

*All pricing on this page is an estimate. Every figure below is a general range for the Houston area — not a quote. Actual cost depends on your home’s electrical load, gas supply, equipment placement, and jurisdiction, which is why a real number requires a site visit. Ranges are current as of 2026 and subject to change.

The short answer

For a professionally installed whole-house standby generator in the Greater Houston area, most homeowners land between an estimated $9,500 and $16,000. The single most common configuration we install is a 22 kW air-cooled unit on a 2,000 to 3,000 square foot home, and that typically runs an estimated $12,000 to $14,500 installed.

Smaller homes running essential circuits only can come in under an estimated $10,000. Large homes with multiple AC units, a pool, and an EV charger can pass an estimated $20,000, and homes that need a liquid-cooled unit go higher still.

Estimated installed cost by generator size

Generator capacity is measured in kilowatts (kW). Bigger home, bigger electrical load, bigger unit. These are all-in installed estimates — not equipment-only prices, and not a quote.

*Estimates only, not a quote. These are realistic 2026 ranges for our service area, not teaser pricing. If a quote comes in dramatically below the bottom of these bands, look closely at what has been left out — usually the transfer switch, the gas work, or the permit.

Not sure which row you belong in? Our generator sizing guide for Houston-area homes walks through how to figure that out before anyone quotes you.

What is actually included in that estimate

A complete standby generator installation is a lot more than dropping a machine in the side yard. A legitimate quote covers all of the following. Component figures are estimated ranges:

• The generator itself — an estimated $3,500 to $12,000 depending on size. This is the line item most people focus on, and it is usually only about half the job.
• Automatic transfer switch (ATS) — an estimated $500 to $1,800. This is the device that senses the outage and switches your home over. Whether you need a service-entrance-rated 200A switch or a smaller load-managed switch makes a real price difference.
• Concrete pad or composite base — an estimated $300 to $900. In our area, elevation matters. Flood-prone lots often need the unit set higher, which costs more.
• Electrical work — an estimated $1,500 to $3,500. Conduit, wire, panel work, and bonding. Cost climbs with distance from the panel.
• Gas line and connection — an estimated $500 to $2,500. This is the most commonly underestimated item. A 22 kW unit needs real gas volume, and if your existing meter cannot supply it, the utility has to upsize it.
• Permits and inspections — an estimated $400 to $1,400 in most Houston-area jurisdictions.
• Labor, startup, and commissioning — load testing, programming the exercise schedule, and walking you through operation.

What drives the price up

Two homes of identical size on the same street can get quotes several thousand dollars apart. Here is usually why:

• Distance from the panel and the gas meter. Every additional foot of trenching, conduit, and gas pipe adds cost. A unit that sits 15 feet from both is far cheaper than one that has to run 70 feet around the house.
• Gas meter capacity. If your meter cannot deliver enough cubic feet per hour, you need a utility upgrade. That is a scheduling delay as well as a cost.
• Propane instead of natural gas. If you are not on a gas main, you are looking at tank purchase or lease plus a regulator setup.
• Panel condition. Older or full panels sometimes need to be replaced or supplemented before a generator can be tied in safely.
• Load management vs. whole-panel coverage. Managing a few large loads with smart modules is often cheaper than sizing up the generator to brute-force everything at once.
• Setback and clearance requirements. Code requires minimum distances from windows, doors, and property lines. Tight lots sometimes force a longer, more expensive run.

Air-cooled or liquid-cooled?

Most Houston-area homes get an air-cooled unit, which covers roughly 10 kW through 26 kW. They are less expensive, physically smaller, and more than adequate for typical suburban homes.

Liquid-cooled units start around 32 kW and use an automotive-style radiator system. They cost significantly more but run cooler under sustained load, last longer, and are the right call for very large homes or anything with commercial-grade demand. If you are on the fence, that decision should come out of a load calculation, not a catalog.

Permits are not optional here

Every standby generator installation in the Greater Houston area requires permits — typically an electrical permit and, depending on jurisdiction, a separate gas or plumbing permit. Inspections are based on the manufacturer install manual, local construction code, and NFPA standards, whichever is strictest.

A reputable installer pulls these for you and includes them in the quote. If a bid does not mention permits at all, that is a red flag — unpermitted work can create problems with your insurer and at resale. We cover this in detail in our guide to generator permits in Houston and Montgomery County.

Ongoing costs after installation

The install is the big number, but budget for these too:

• Annual maintenance — oil, filters, plugs, valve adjustment, and a load test. Plan on a few hundred dollars a year, or bundle it into a service plan.
• Fuel during outages — a 22 kW unit on natural gas burns roughly 200 to 300 cubic feet per hour at half load. On a multi-day outage that shows up on your gas bill, though it is far cheaper than a hotel and a freezer full of spoiled food.
• Weekly self-test — your generator will exercise itself for a few minutes each week. Negligible fuel, but expect to hear it.

Staying current on maintenance is what determines whether the unit actually starts when a storm hits. Our Houston generator maintenance and service page covers what a service visit includes.

Does a generator pay for itself?

Strictly on dollars, it depends on how often your area loses power and what an outage costs you. Between hurricane season, winter storms, and general grid strain, a lot of Houston-area homeowners have had multi-day outages more than once in recent years. Spoiled food, hotel nights, a failed sump pump, or ruined flooring add up quickly.

For most people the honest math is not purely financial. It is medical equipment that has to stay on, a home office that cannot go dark, or elderly parents who cannot sit in a house at 95 degrees. Those are the reasons people actually buy.

Financing

Very few homeowners write one check for this. Financing spreads the cost into a monthly payment that often lands near what people already spend on other home services. We outline available terms on our finance options page.

How to compare quotes fairly

When you have two or three bids in hand, put them side by side and check that each one specifies:

• Generator make, model, and kW rating — not just “22 kW unit”
• Transfer switch type and amperage, and whether it is service-entrance rated
• Whether permits and inspection fees are included
• Who handles the gas line, and whether a meter upgrade is assumed or excluded
• Pad type and elevation
• Length of the electrical and gas runs the price assumes
• Warranty terms, and who performs warranty service locally
• Whether startup, load testing, and a walkthrough are included

The cheapest quote is frequently the one with the most exclusions. You can see how we handle each stage on our installation process page.

Frequently asked questions

How much does a 22 kW Generac cost installed in Houston?

Most 22 kW Generac Guardian installations in the Houston area run an estimated $12,000 to $14,500 all in, including the transfer switch, pad, gas and electrical work, permits, and startup. Long equipment runs or a gas meter upgrade can push it higher.

Is a whole-house generator cheaper than a portable one?

No — a portable generator costs a fraction as much up front. The tradeoffs are that you have to be home to start it, refuel it every several hours, run it outside away from doors and windows, and it cannot safely power your central AC or your whole panel. Standby units start automatically and run on your existing gas supply.

How long does installation take?

The physical work is usually one to three days. The full timeline from signed quote to a running generator is more often three to eight weeks, because it includes permitting, inspection scheduling, and sometimes a utility gas meter upgrade. Lead times stretch once a storm is in the forecast.

Will a generator increase my home value?

In storm-prone markets like ours it is a genuine selling feature, and appraisers in the Houston area generally recognize it. Do not expect to recover the full install cost at resale, but permitted, well-maintained units with documentation hold value best.

Do I need to be home when it kicks on?

No. A standby generator with an automatic transfer switch detects the outage, starts, and transfers your home over in seconds, whether you are in the kitchen or out of town. It switches back and shuts down on its own when utility power returns.

What size generator do I actually need?

That comes from a load calculation, not square footage alone. Air conditioning tonnage, well pumps, electric water heaters, and EV chargers all matter more than floor area. Our sizing guide explains what goes into it.

Want a real number for your home? Request a free in-home assessment and we will do the load calculation, check your gas and panel capacity, and give you a written quote with nothing hidden in the footnotes.

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