If you are always looking for ways to lower your summer utility bills, a whole house fan may be a good addition to your home HVAC system. We all think about how to keep our houses cool in a heat wave without relying too much on the air conditioner. The whole house fan is a more affordable alternative, available through Bay Area HVAC servicers. And it can keep you from running your air conditioner full blast all summer and running up your monthly utility bills.