How do I know if I need more insulation to keep cool in the summer?
I live in the desert of southern California so it can get pretty hot in the summer (110°F is not uncommon). I would like to lower my electric bill, but more to the point, I want to ensure that our house is comfortable without the air conditioning running all the time. What can I do? Insulation is always good, hot or cold. There are a lot of other considerations to save energy and keep cool. Air leaks, unprotected windows, and ventilation are also important factors. Perhaps yo