Whole-House Generator Installation Cost Calculator
Estimate the cost to install a whole-house standby generator based on generator size (kW), fuel type, and options like new gas lines and load centers.
Last updated: March 25, 2026
Whole-House Generator Installation Cost Calculator
Estimate the cost to install a whole-house standby generator based on generator size (kW), fuel type, and options like new gas lines and load centers.
Estimated Total
$16,500
Itemized Breakdown
This calculator provides estimates based on national averages adjusted for your region. Actual costs may vary significantly based on specific project conditions, contractor availability, material prices, and local market factors. Always get at least 3 quotes from licensed, insured contractors before starting your project.
Want the full picture?
Read our complete Whole-House Generator Installation cost guide with material comparisons, contractor tips, savings strategies, and regional pricing data.
Quick Cost Reference
Cost by Tier
10-14 kW air-cooled standby generator, 100-amp transfer switch, existing gas line
20 kW air-cooled, 200-amp automatic transfer switch, new gas line run
22+ kW liquid-cooled, whole-house coverage, extended gas line, load management