Whole House Generator Cost Calculator (CT)
Three questions, real Connecticut prices. These are the same installed ranges we publish in our generator cost guide and quote on real jobs, with the generator, automatic transfer switch, labor, permit, and inspection included. Built by Tyler Flanagan, CT-licensed master electrician and authorized Generac & Kohler installer.
1. What do you want to keep running in an outage?
2. Fuel source
3. Your electrical panel
Estimated installed cost in Connecticut
$9,000 – $14,000
Recommended size: 18–22 kW standby (Generac or Kohler)
Includes generator, transfer switch, install labor, permit, and inspection. Final price set by a free on-site load calculation.
Calculator FAQ
How accurate is this generator cost calculator?+
The ranges are the real installed prices TJF Electric quotes in Connecticut — generator, transfer switch, labor, permit, and inspection included. Your exact price depends on the on-site load calculation, gas line routing, and panel condition, which is why every estimate is confirmed with a free site survey before any work.
What size whole-house generator do I need?+
Essentials-only coverage (well pump, fridge, heat, some lights) runs 10-14 kW. Whole-home without central AC runs 18-22 kW. Whole-home including central air runs 24-26 kW. Large homes over 4,000 sq ft, electric heat, or pools usually need a 32 kW+ liquid-cooled unit. The deciding factor is a load calculation, not square footage alone.
Does the price include the transfer switch and permit?+
Yes. Every range in this calculator includes the generator itself, the automatic transfer switch, installation labor, the town electrical permit, and final inspection. Gas-line work by a licensed gas fitter is coordinated as part of the project.
Want the full breakdown — sizing, natural gas vs. propane, brand comparison, and what drives price? Read the complete CT generator cost guide or explore our whole-house generator service.
Ready for an exact number?
The free site survey pins down your load calculation, gas routing, and panel condition — and the quote you get is the price you pay. 10-year written workmanship guarantee.
(860) 847-8047