Edgar Diaz has been the service tech assigned for my furnace maintenance in March and for my AC maintenance in June. I was very impressed with Edgars knowledge and thoroughness while inspecting and cleaning both my furnace and Central air Conditioning. Edgar has done more things than previous tech visits. Edgar was the first Tech to actually take the blower motor out of my furnace to clean it. Edgar is the first Tech to take the fan off of my Central Air and clean the fins with a hose from the inside. He explained that this doesn’t allow the foreign particles to become wedged deeper into the fins.