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Sarah M.
Bellevue, WA · EV Charger Installation
Our Services
Whole House Generator Installation
Never lose power again.
5 Google·Licensed·Same-Day·Upfront
Generators
Overview
Whole House Generator Installation
Never lose power again.
Whole house generator installation in Seattle and across the Eastside. Generac, Kohler, and Briggs & Stratton standby systems with automatic transfer switch — permitted, inspected, and warrantied.
When the power goes out in Seattle, you usually find out the hard way how many things in your house actually depend on electricity. The fridge stops, the heat pump stops, the sump pump stops, the home office stops, and the kid's CPAP stops. A standby generator is the difference between "we lost power for two days" and "we didn't notice until our neighbor texted."
Mad Dog Electric handles whole house generator installation in Seattle and across the Eastside — Generac, Kohler, and Briggs & Stratton — from the first site visit through the L&I inspection and the first month of monitoring after startup. We're a licensed Washington electrical contractor and we've done generator installs in everything from a 1920s Capitol Hill craftsman to brand-new builds in Sammamish.
The work that goes into a clean install is what separates a system that runs for 20 years from one that's giving you problems by year three.
- Automatic standby generators (Generac, Kohler, Briggs)
- Service-rated automatic transfer switch (ATS)
- Natural gas & propane fuel options
- Real load calculation & generator sizing
- Annual maintenance plans available
Why Mad Dog
Why Choose Us for Generators
Automatic Backup
Senses the outage, starts itself in 10–30 seconds, transfers your panel via the ATS, and shuts off when utility is back. You don't lift a finger.
Generac, Kohler, or Briggs
We install all three. Honest comparison during the site visit so you pick what actually fits your home and budget.
Right-Sized to Your House
Real load calc — no "8 kW is fine for everyone" hand-waving. Sized to your actual loads with headroom for a heat pump or EV charger.
Cold-Weather Ready
Cold-weather kit included on every install. Battery warmer, oil heater, crankcase heater — prevents no-start issues at 25°F.
Do You Need This?
Signs You Need Generators
A standby generator isn't right for everyone. If one or more of these is true, it's worth getting a quote:
- You work from home and a multi-hour outage costs real money
- Someone in the house relies on medical equipment (CPAP, oxygen, dialysis)
- You have a well pump — when power goes, water goes
- Your sump pump has saved your basement before
- You've got a freezer full of food, or run a home business
- You live somewhere outage-prone (foothills, big trees, end of a long line)
The Mad Dog Guarantee
Six Guarantees, Zero Fine Print
- Licensed, Bonded & Insured
- Lifetime Workmanship Warranty
- No Price Change Guarantee
- Same-Day Free Estimates
- Background-Checked Pack
- Locally Owned & Operated
How It Works
Our Simple Process
1
Site Visit & Load Calc
We look at the panel, your major loads, where the unit can sit per code, and where the gas line runs. Fixed-price quote with everything broken out.
2
Pad & Gas
Small concrete or composite pad poured. Gas line run from meter (or propane tank) to the unit, sized for the BTU load.
3
Electrical & ATS
Service-rated automatic transfer switch installed next to your main panel. Wired to take over the whole panel during an outage.
4
Startup & Inspection
We run the unit, verify automatic transfer, set the weekly self-test, and walk you through the controls. Then meet the L&I inspector.
Real Pricing
What Generators Cost in Seattle
All-in pricing for a fully installed Generac or Kohler standby system in the Seattle area, 2026:
10–14 kW (essentials)
$8,500 – $13,000
Small home, key circuits only
18–22 kW (whole house)
$13,000 – $18,500
Most single-family homes
24–26 kW (large home)
$17,000 – $24,000
Big home, EV charging, heat pump
Includes unit, ATS, pad, gas line work, electrical, permits, and startup. Biggest variables are gas line distance from your meter and whether your panel needs an upgrade.
Permits & Code
Permitted, Inspected, Done Right
Standby generator installs in Washington require both an electrical permit (us) and a gas piping permit (the gas fitter). Both get inspected. We handle our side; if you don't have a preferred plumber, we have one we work with regularly. The ATS, generator placement (minimum 18" from house, 5 ft from doors/windows), and gas sizing all need to meet code — we handle every piece.
Google Review
Financing Available
Low monthly payments. 0% APR options for qualified customers.
FAQ
Frequently Asked
Questions
Service Area
Whole House Generator Installation Across the
Greater Seattle Area
Serving Seattle, Bellevue, Kirkland, Redmond, Everett, Issaquah, Sammamish, and the rest of the Eastside and Snohomish County.
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Other Services We Offer
EV Chargers
Level 2 home charging stations installed right. Drive electric with confidence.
Learn MorePanels & Remodels
Modernize your home's electrical system to handle today's demands safely.
Learn MoreNew Construction
Complete electrical rough-in to trim-out for new homes, ADUs, and additions.
Learn MoreFree · No Obligation
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Get a free estimate on your next electrical project. No pressure, no hidden fees — just honest answers from your neighborhood pack.