The best home generator installation companies in 2026 — Generac, Kohler, Briggs & Stratton, Cummins, Aire Serv, Mr. Electric, and trusted local electricians — compared on cost, sizing, fuel, and service so you can pick the right install for your home.
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A whole-house standby generator is a real investment, usually $7,000 to $18,000 installed. The unit matters, but who installs it matters just as much. A correctly sized and permitted install runs quietly for 20+ years. A rushed one leaves you with code problems and a generator that won't start when the next storm rolls through. Here's a clear, side-by-side look at the companies most homeowners are choosing in 2026.
Before comparing names, know what separates a dependable installer from a cheap one:
Generac is the most installed home standby brand in the country, and its Authorized Dealer network means a vetted local installer is usually nearby. Dealers handle sizing, permitting, and ongoing service. Best for homeowners who want a widely supported unit and easy access to parts. Typical installed range: $8,000–$16,000.
Kohler standby generators are known for quieter operation and strong build quality, installed through factory-trained dealers. A solid pick if your generator sits close to a bedroom window or a neighbor's. Typical installed range: $9,000–$18,000.
Briggs & Stratton offers dependable standby units at a friendlier price, installed by independent licensed contractors. Good for smaller and mid-size homes that don't need to run every circuit. Typical installed range: $7,000–$13,000.
Cummins builds robust standby generators suited to bigger homes, well pumps, and high electrical demand, installed through certified dealers. Best when you need to power nearly everything. Typical installed range: $10,000–$18,000.
Aire Serv (part of the Neighborly family of home service brands) installs and services standby generators across many regions, with the backing of a national warranty and consistent standards. Good if you value a recognizable name with local crews. Pricing varies by market.
Mr. Electric focuses on the electrical side of generator work — panel upgrades, transfer switches, and code-compliant tie-ins. A strong choice if your panel needs attention or you want an electrician-led install. Pricing varies by market.
Don't overlook the skilled electrician down the road. A reputable local pro who is brand-certified can often match national pricing, knows your county's permit rules cold, and answers the phone when you call. Always confirm licensing, insurance, and references. Pricing is typically the most competitive of the group.
| Company | Best for | Typical installed cost | Service network |
|---|---|---|---|
| Generac Dealers | Overall coverage & support | $8,000–$16,000 | Largest |
| Kohler | Quiet, premium homes | $9,000–$18,000 | Strong |
| Briggs & Stratton | Mid-range value | $7,000–$13,000 | Moderate |
| Cummins | Large homes, heavy loads | $10,000–$18,000 | Strong |
| Aire Serv | National consistency | Varies | National |
| Mr. Electric | Electrical-first installs | Varies | National |
| Local electricians | Personal service & price | Most competitive | Local |
For most homeowners, a fully installed standby generator runs $7,000 to $18,000. The unit itself is $3,000–$8,000; the rest covers labor, the transfer switch, electrical work, the gas or propane connection, the concrete pad, and permits. A partial system that powers only essential circuits costs less than one that runs your entire home, including central air.
Start with a load calculation so you buy the right size, not the biggest. Confirm your fuel source and get at least two or three itemized quotes — one from a national dealer and one from a trusted local electrician makes a fair comparison. Ask about the warranty, the annual maintenance plan, and how quickly they can schedule the work. The dependable choice is the company that sizes it correctly, pulls the permit, and stands behind the install for years.
Ready to compare options for your home? Get a quote from a licensed installer in your area and ask for the load calculation in writing — it's the simplest way to know you're getting the right generator at a fair price.
Costs are general 2026 estimates and vary by region, home size, and fuel source. Always verify licensing, insurance, and permit requirements with the installer before scheduling service.
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