HookedOnFTF 0 Report post Posted August 31, 2023 24 Kw Generac Guardian model - roughly 3300 sq ft - $18000 installed early summer. Costs were higher due to purchase and installation of 500 gallon underground propane tank - 70 feet run of copper to unit - concrete pad for generator - necessary landscaping - prepayment of ten years annual maintenance. We rarely have outages but are in our seventies. My wife has a medical condition that needs daily medical equipment usage. Quote Share this post Link to post Share on other sites