Locally-owned since 1977 • Licensed, bonded and insured in Washington (WA Contractor Reg. #HOMECCA785BD) • WA Electrical Contractor Lic. #HOMECCA782DC • NATE-certified technicians • Carrier Factory Authorized Dealer
Standby generator installation for Seattle-Tacoma homes
Home Comfort Alliance installs residential standby generators for homeowners across the Seattle-Tacoma area. A standby generator is permanently installed outside your home, runs on natural gas or propane, and starts on its own when utility power drops, so the circuits you choose stay powered through an outage.
Every installation starts with a load plan. Our licensed electricians look at what you want to keep running, your electrical panel, your fuel supply and where the unit can sit, then size the system to match. We also take care of the electrical and fuel permits, the installation, startup and load testing, so one team owns the whole project from the first visit to the final inspection.
Standby or portable: which generator is right for your home?
A standby generator is the better fit if you want backup power that starts automatically and can run heating equipment, refrigeration, a sump pump and other hard-wired loads even when nobody is home. A portable generator costs less up front, but someone has to set it up, fuel it and connect it by hand during every outage.
- Starting: a standby generator starts and takes over through an automatic transfer switch; a portable unit is started and connected manually.
- Fuel: a standby generator connects to your natural gas service or a propane tank; most portable units run on gasoline that has to be stored and refilled.
- Coverage: a standby system can be designed for essential circuits or the whole home; a portable unit powers only what its outlets or hookup allow.
- Safety: portable generators must run outdoors, well away from doors and windows, because the exhaust contains carbon monoxide. A standby unit sits in a planned location with the required clearances.
Already have a standby generator that needs attention? See our generator maintenance and repair service.
Whole-home backup or essential circuits?
You can back up the whole house or only the circuits that matter most during an outage. An essential-circuit system needs a smaller generator; a whole-home system needs more capacity but lets you use the house almost normally while the power is out.
Essential-circuit systems are built around the equipment you choose, which often includes:
- Furnace, heat pump or other heating equipment
- Refrigerator and freezer
- Sump pump or well pump
- Internet, phones and home office equipment
- Security system and garage door
- Medical equipment
- Selected lights and outlets
Whole-home coverage usually means a larger generator, a bigger fuel demand and different transfer equipment, so it changes the scope of the installation as well as the equipment price.
What size standby generator do you need?
The right generator size depends on the electrical loads you want backed up, not on your home’s square footage. Home Comfort Alliance sizes each system from a load review of your home, including the extra power that motors, pumps, heat pumps and air conditioners draw for a moment when they start.
Sizing it correctly matters in both directions. A generator that is too small may shut down or fail to start large equipment during an outage, while one that is much larger than needed costs more to buy, fuel and install. If your home heats with a heat pump or electric furnace, that equipment is often the biggest load to plan around.
Natural gas or propane: which fuel should your generator use?
Most home standby generators run on natural gas or propane, and Home Comfort Alliance installs both. Natural gas gives a continuous supply when your home is already on a gas line; propane works where gas service is not available and is stored in a tank on your property.
Fuel planning is part of the design. The gas supply and piping have to carry the generator’s demand on top of your furnace, water heater and other gas appliances, and some homes need piping changes before the generator can be connected.
Smell gas? If you smell gas near your generator or anywhere in your home, leave right away, then call 911 or Puget Sound Energy at 1-888-225-5773 from outside, and avoid switches or anything that could make a spark. Source: PSE gas leak guidance.
Permits, placement and utility safety
A permanent standby generator needs an electrical permit and inspection, and the natural gas or propane connection needs a fuel permit. Home Comfort Alliance handles permitting, placement clearances, utility coordination and final inspection as part of every generator installation.
In most of Washington, electrical permits and inspections come from the Department of Labor & Industries, while some cities and the Tacoma Power service area run their own electrical permitting and inspections (see Washington L&I electrical permit rules). We confirm which authority applies to your address before work starts.
The generator sits outside on a level pad, with the clearances from doors, windows, vents and property lines that the manufacturer and local code require. The automatic transfer switch disconnects your home from the utility before the generator powers it. That keeps generator power from flowing back into utility lines, which protects line workers, and it is why a standby generator is always connected through proper transfer equipment.
Will you need an electrical panel upgrade?
Not always. Many homes can connect a standby generator to the existing panel; an upgrade is only needed when the current service, panel space or configuration cannot support the transfer equipment and the circuits being backed up.
During the load review we look at the main panel, service capacity, available space, transfer switch requirements and any wiring that needs updating. If your home does need more capacity, we can include an electrical panel upgrade in the same project.
How standby generator installation works
A Home Comfort Alliance generator installation follows seven steps, from the first conversation to the walkthrough after startup.
- In-home assessment. We talk through which systems and circuits you want running during an outage.
- Load and panel review. An electrician measures the expected loads and checks the panel and electrical service.
- Generator and fuel selection. We match generator capacity to your loads and confirm natural gas or propane.
- Placement and permits. We plan the location, clearances, wiring route and fuel connection, then pull the electrical and fuel permits.
- Installation. The crew sets the generator, installs the transfer switch and completes the electrical and fuel connections.
- Startup and load testing. We start the system and test it under load to confirm it carries the circuits it was designed for.
- Walkthrough and inspection. We show you how the system works and what maintenance it needs, and coordinate the final inspection.
What does standby generator installation cost?
Standby generator installation cost depends on the generator size, how much of the home you back up, the transfer switch, fuel piping, placement and any panel work, so Home Comfort Alliance prices each project after an in-home assessment. Generator installation estimates are free.
The main things that move the price:
- Generator capacity
- Whole-home or essential-circuit coverage
- Automatic transfer switch and related equipment
- Condition and capacity of your electrical panel and service
- Natural gas piping changes or a propane tank
- Distance from the generator to the panel and gas meter
- Pad and site preparation
- Permits and inspections
Home Comfort Alliance currently advertises up to $1,000 off qualifying residential generator installations; see current offers for details and eligibility. Financing is available for qualifying projects, and terms and approval requirements apply.
Get a free estimateAn in-home visit and a written, upfront price before any work begins.
Caring for your generator after installation
A standby generator needs regular maintenance to be ready when the power goes out. Home Comfort Alliance recommends annual maintenance, or more often if the generator runs a lot, and our generator maintenance and repair team handles oil and filter service, diagnostics and load testing.
Why homeowners choose Home Comfort Alliance for generator installation
Home Comfort Alliance handles the whole standby generator project with one team: load planning, electrical work, fuel connections, permits, installation, testing and ongoing service. Our member companies have served Western Washington homes since 1977, with licensed electricians working alongside heating, cooling and plumbing technicians.
- One company for the electrical and fuel sides of the job
- Load-based sizing instead of guesswork
- Permits, utility coordination and inspection included
- Licensed, bonded and insured in Washington, WA Contractor Reg. #HOMECCA785BD
READ WHAT OUR CUSTOMERS ARE SAYING
Reviews from homeowners across the Puget Sound
Where we install standby generators
Home Comfort Alliance installs standby generators for homeowners across the Seattle-Tacoma area and the wider Puget Sound. For Tacoma homes, including local permit details, see standby generator installation in Tacoma, WA, or browse all of our service areas.
Standby generator installation FAQs
Do generators run on natural gas or propane?
We install both. Natural gas offers uninterrupted fuel if you’re connected to city lines; propane provides flexibility where gas isn’t available. We’ll help choose the best option for your home and location.
Will a generator power my entire home?
It depends on generator size and your chosen loads. We can design a whole-home backup or an essentials-only setup for critical circuits.
Are permits required for installation?
Yes. Electrical and fuel permits are required. We handle permitting and inspection coordination as part of your installation package.
Does a standby generator start automatically during an outage?
Yes. When utility power drops, the automatic transfer switch senses the loss, the generator starts on its own, and your backed-up circuits move to generator power. When utility power returns, the switch moves them back and the generator returns to standby.
What is an automatic transfer switch?
An automatic transfer switch is the equipment that connects your home to either utility power or generator power, never both at once. It makes the change on its own during an outage and keeps generator power from flowing back into utility lines.
Do I need to upgrade my electrical panel for a generator?
Not always. Many homes can connect a standby generator to the existing panel. An upgrade is only needed when the service capacity, panel space or configuration cannot support the transfer equipment and the circuits you want backed up, and Home Comfort Alliance checks this during the load review.
Where can a standby generator be installed?
Standby generators are installed outdoors on a level pad, with the clearances from doors, windows, vents and property lines that the manufacturer and local code require. A spot near the gas meter and electrical panel usually keeps wiring and piping runs shorter.
How often do generators need maintenance?
We recommend annual maintenance, or more often if the generator runs frequently. Our plans include oil and filter changes, diagnostics, and load testing to ensure reliability.
CURRENT SPECIALS & LIMITED-TIME SAVINGS
Up to $1000 OFF Generators*
Save on energy-efficient upgrades. Includes expert installation.
10% OFF Electrical Service or Repair*
Regular service for your electrical system prevents future problems before they start.
Get a standby generator installation estimate
A comfort advisor will visit to size your generator, choose natural gas or propane, and plan permits and placement.
Get an estimate
A local comfort advisor will call you to set up your visit.