We tested and reviewed the top whole house generators on the market. After 100+ hours of research, we are comfortable recommending the Champion 8.5-kW Home Standby Generator as our #1 pick. For the price, this machine does not sacrifice quality. It offers a high level of efficiency, even in extreme weather, and is available in all 50 states. What’s more, the Champion features an unbeatable 10-year warranty plan with a lifetime of technical support. Read further to learn what else we found.