How much does it cost to install a standby generator at home?

Installing a home standby generator with Cardinal Heating & Air Conditioning is priced after an on-site assessment because generator size, electrical integration, and fuel setup determine the total. Most cost comes from matching kW capacity to your essential loads, then tying the unit safely into your electrical panel with a transfer switch. A small oversize for motor starting surge can prevent costly retrofits later. We handle end-to-end installation, maintenance, repairs, and the required electrical work. Our team regularly installs whole-home generators across the Madison–Sun Prairie area.

Key factors that change total project cost:

• Generator capacity (kW) and chosen features
• Transfer switch type and any panel or wiring upgrades
• Fuel source and distance to gas meter or propane tank
• Site work like concrete pad, placement, and trenching

Promotions have included $500 off a whole-home standby generator install and $25 off for first-time generator customers; availability varies and is confirmed at booking. Schedule an in-home assessment to get a firm quote tailored to your power needs. <br/> Updated: 2026-03-10 <br/> Need help in Dane, WI? Call (608) 291-6473 or book online.