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 — generator, automatic transfer switch, labor, permit, and inspection included. Built by Tyler Faye, 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) 268-7972