Articles by Bill Johnson

Btu Buddy 143: Heat Pump with a Noisy Outdoor Fan

Bob and Tim were on their way to a service call on a heat pump. The homeowners are complaining about noise at the outdoor unit. When Bob and Tim arrived, the homeowners explained that the heat pump for upstairs is beside the house in a wooded area. It is under their upstairs bedroom window and it became loud last night.


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Btu Buddy 139: An Overcharged System - Part 2

Bob and Tim were at the shop after a day of service calls. The weather was still hot, 93°F, and Bob said, “We just did a service call with a system that was overcharged and had an orifice expansion device. I would like to go into further details with you on a system with a thermostatic expansion valve (TXV) for an expansion device.”


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Btu Buddy 138: An Overcharged System - Part 1

Bob and Tim were on their way to a service call with a new customer. When they got to the job, the customer explained, "The unit was not cooling and I had a company come out for a service call. The unit seemed to work OK last week when it was a little cooler outside, but this week it has warmed up and the unit is not functioning as well."


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Btu Buddy 137: Heat Pump Problem in the Summer

Bob and Tim were on their way to a no cooling call; in fact, it sounded like a heating call. The customer has a bonus room on the third floor that used to be attic space. When Bob and Tim arrived, the customer told them, “The bonus room upstairs seems much too hot and the air coming out of the registers is hot to the touch.”


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