Whole Home Generator Installation · Houston, Texas
Houston's Multi Brand Generator Specialists
Grasten Power installs whole-home generators from Generac, Kohler, Cummins and Briggs & Stratton across Greater Houston. 24/7 live phone support and the 12-Year Power Plus Warranty, exclusive to Canter Power Systems brands.
Why Houston Homeowners Act
Houston's Power Outage Reality
Greater Houston sits on the Gulf, and the grid that serves it goes down in hurricanes, summer thunderstorms and winter cold alike. When it does, restoration is measured in days, not hours.
In July 2024, Hurricane Beryl left 2.26 million CenterPoint customers without power, the largest outage in the company’s history, and recovery took over a week.
Greater Houston sees 90+ severe storm days a year. A standby generator starts automatically within seconds of an outage and runs until utility power is restored, whether the outage lasts 20 minutes or 5 days.
Hurricane Beryl, July 2024. Recovery took over a week.
Every one of them is a chance for the grid to go down.
CenterPoint restoration after Beryl ran past a week in July 2024.
February 15, 2021, the night the ERCOT grid failed at scale.
Why Houston Chooses Grasten
What Makes Us Different
Greater Houston has no shortage of generator installers. Here is what sets Grasten apart, from our Conroe headquarters to the last house on a CenterPoint line.
Generator Focused
Grasten was built in the heart of Houston, and generators are the only thing we do. No HVAC jobs, no general electrical work. Every technician, service van and process is set up for whole-home standby installation and service, with over 20,000 installations behind the team that comes to your Houston home.
Specialists, Not Generalists
Live 24/7 Phone Support
When Hurricane Beryl cut power to 2.26 million CenterPoint customers, restoration ran past a week. In an outage like that, a real person on our Texas team answers the phone, day or night, and remote monitoring alerts with fault codes help our technicians diagnose problems faster.
Always Answered
Customized Mobile Fleet
Our service vans roll out of our Texas parts warehouse stocked with the parts Houston repairs call for most, so technicians can finish on the first visit.
Ready to Roll
Nationally Recognized
Grasten holds Generac Prestige, Generac's highest dealer recognition for quality and service. Behind it are 20,000+ installations and a team that handles every City of Houston building, electrical and gas permit for you, then schedules the inspections.
Trusted Dealer
Multi Brand Dealer
Generac, Kohler, Cummins and Briggs & Stratton are all on display at our showroom, so Houston homeowners can see, hear and compare them before choosing. Because we're authorized for all four, we recommend the unit that fits your home, your HOA and your budget.
Four Brands, One Recommendation
12 Year Power Plus Warranty
Every Generac air-cooled generator we install in Greater Houston carries the 12-Year Power Plus Warranty: labor, travel, parts and major components, a $1,499 value at no extra cost. Annual maintenance by our team keeps it active through every hurricane season.
12 Years of Full Coverage
How It Works in Houston
Your Installation Process
From your first call to the flip of the switch, installation typically takes 2 to 4 weeks, depending on permitting and site preparation. Grasten Power handles every permit application for the municipalities we serve.
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01
Free Estimate and Proposal
A Grasten Power Field Engineer comes to your home, reviews the electrical system, assesses your power needs, and finds the best spot for the generator.
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02
Permitting and Preparation
Grasten Power handles every permit application for the municipalities we serve. All we need from you is a signed Notice of Commencement and a property survey.
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03
Installation Day
Your install is done entirely by our own in-house team of licensed electricians, gas technicians, and installation specialists.
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04
Testing and Training
We test the complete system, including the automatic transfer switch and full load performance. Then we walk you through how it works.
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05
Ongoing Service
Annual maintenance plans, 24/7 emergency repair, and warranty service, all handled by Grasten Power crews and our mobile service fleet.
Houston Pricing Guide
What Does a Generator Cost in Houston?
Whole home generator installation in Houston runs from $7,000 to $25,000+ depending on generator size, fuel source, and site specifics. The middle of that band is where most Houston jobs land.
Essential circuits (lights, fridge, AC unit)
Most homes under 3,000 sq ft (full house)
Larger homes, multiple HVAC zones
Large homes, home offices, medical equipment
That price covers the equipment, our in house installation crew, the automatic transfer switch, City of Houston permit fees, and the 12 year Power Plus warranty.
Most Houston homes on city gas service run natural gas. CenterPoint Energy Gas covers most of the metro, and the generator pulls off the same line that already feeds the house.
Exclusive Power Plus Warranty 12 Years of Full Coverage
Every Generac air-cooled installation we do includes the full 12 year Power Plus Warranty at no extra cost, covering parts and labor for 12 full years beyond the standard manufacturer warranty.
Choosing Your Generator
Comparing Your Options for a Houston Home
Grasten Power is authorized for Generac, Kohler, Cummins, and Briggs & Stratton, so the recommendation is the unit that fits your home, not the only one on the shelf.
Generac
The most widely installed whole home generator brand in the United States. Generac offers the broadest range of residential standby units (11kW to 24kW+ air-cooled) and a mature remote monitoring platform (Mobile Link).
Kohler
Known for quieter operation and premium build quality. Kohler residential generators are often preferred by homeowners who prioritize noise levels.
Cummins
Industrial-grade engineering scaled for the home. Cummins backup generators carry the same engine heritage that powers commercial fleets.
Briggs & Stratton
Value-tier standby generators built by one of the most established names in residential power.
During your free estimate, we walk through the options for your home, your neighborhood, and your HOA. We are authorized for all four brands, so there is no reason to steer you toward one of them.
Industry Recognition
Recognized by Generac for Outstanding Service
Texas' #1 Winning Generac Generator Installer
Generac Prestige Dealers are among Generac's top tiers of dealers, meeting the highest standards for certification, customer satisfaction, and service commitment. These industry-leading dealers provide fast response times and extensive expertise, delivering the highest level of care to homeowners purchasing and maintaining a Generac generator.
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What Houston Homeowners Say
Houston Homeowner Questions
Houston Generator Questions, Answered
The questions Houston homeowners ask us most often before scheduling an estimate.
How much does a whole home generator cost to install in Houston?
The realistic range turnkey is $7,000 to $25,000+, and the middle of that band is where most Houston jobs land. A 22kW Generac air cooled unit covers a 2,000 to 3,000 square foot home and is the most common install we run in Greater Houston.
Do I need a permit to install a generator in Houston?
Yes. Three permits are involved: building, electrical, and mechanical (gas). All of them go through the City of Houston Public Works Permitting Center.
What size generator do I need for a typical Houston home?
For a home between 1,800 and 3,500 square feet, a 22kW or 24kW Generac air cooled unit handles the load. The big consumer is air conditioning, which on a Houston August afternoon is doing real work.
Will my HOA in Houston have to approve the generator?
Most likely, yes. Neighborhoods like River Oaks, Memorial, West University, Tanglewood, and most master planned communities require architectural review.
Natural gas or propane in Houston: which makes more sense?
Most Houston homes on city gas service run natural gas. CenterPoint Energy Gas covers most of the metro, and the generator pulls off the same line that already feeds the house.
How long does the actual install take on site?
The crew is on your property for one to two days. Day one is the concrete pad, setting the generator, the gas and electrical connections, and wiring the transfer switch.
Will the generator be loud enough to bother my neighbors?
Modern Generac and Kohler standby units run between 55 and 65 decibels. That’s roughly dishwasher volume.
What happens to my generator in a hurricane?
All four brands we install (Generac, Kohler, Cummins, Briggs & Stratton) are built to handle hurricane force winds.
Does Grasten Power service the generator after it’s installed?
Yes. The team that installs it is the same team that services it. Our service vehicles are mobile, stocked with the parts that come up most often, and our dispatch runs 24/7.