Your air conditioner sat idle all winter. The first blazing week of July is not the moment to find out something is wrong. A few hours of simple maintenance in April or May can mean the difference ...

Daniel is Lifehacker's Shopping Editor covering tech deals and reviewing TVs, headphones, speakers, and projectors. He earned his master’s in journalism from Columbia University and has reported for ...

Home cooling equipment needs simple seasonal upkeep to maintain peak performance. Preparing your cooling system before summer heat arrives prevents unexpected breakdowns and keeps energy costs ...