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

Bob and Tim have gotten together after work to discuss the oil furnace service call that they were on earlier in the day. Bob had asked Tim if he would be willing to stay after work and review the ...

The author’s air-source heat pump resembles an air conditioning unit, and it pictured here alongside one of the heating oil fuel tanks. Photos by Adam D. Bearup The following story covers our recent ...