A versatile new cleaning tool simplifies air conditioning system maintenance and diagnosis. This wand-shaped tool, Lisle No. 88800, eases the potentially awkward job of cleaning a vital heat exchanger ...

Bob is a service technician who is well trained and nationally certified. However, he sometimes suffers from the same confusion that all technicians occasionally do — the facts that he gathers may or ...

Add Yahoo as a preferred source to see more of our stories on Google. Air conditioning is a gift from the gods—without it we’d all suffer many sleepless nights and miserable sweaty days during the ...