A whole-house (standby) generator typically costs $6,000 to $11,000 total, including the unit and professional installation. The generator itself usually runs $3,000 to $6,000, while setup — covering electrical wiring, plumbing, permits, and site preparation — adds. Need Help? Visit our Get free shipping on qualified Generac House Generators products or Buy Online Pick Up in Store today in the Outdoors Department. Check each product page for other buying options. Made with chemicals safer for human health and the environment. Manufactured on farms or in facilities that protect the rights and/or health of workers. Here's a quick cost snapshot: The total. Generac's GP6500 portable generator with CO-sense technology provides lots of power while protecting you and your home from carbon monoxide (CO) poisoning. When the power fails, you'll be ready.
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