Service and Maintenance

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In this installment of the Btu Buddy series, Bob goes on a call where a carbon monoxide detector alarm is sounding off. He finds that a fireplace is contributing to the problem.

This article is part two of a three-part series on inspecting and servicing gas appliances. It covers thermostats/zone sensors, filters, the blower compartment, wiring, and the burner compartment.

This article is part one of a three-part series on inspecting and servicing gas appliances. This part covers infiltration air and the ventilation air test, equipment efficiency, venting, and the three-part testing procedure for checking a heat exchanger.

There is no reason to ever put gauges on an air conditioning or refrigeration system after the initial installation unless a problem with the mechanical refrigeration circuit is suspected. The refrigerant charge can be accurately checked using a thermometer and manufacturer's charging chart.

In this edition of the Btu Buddy series, Bob goes on a call where the customer is complaining about their heat pump blowing cold air. Bob explains the differences between a heat pump and furnace, and makes a couple adjustments to the system.

John Logue was stumped. The contractor designs and installs 55 to 80 HVAC systems a year, but he had never run into this situation - a customer complaining that water was coming out of the homeowner's supply grilles.

This article discusses what migration is and how to prevent it, as well as what a pump down system is, when it should be used, and its advantage.

In this installment of the Btu Buddy series, Bob goes on a no cooling call and finds a kink in the liquid line of the A/C system. Btu Buddy explains his choices for repairing the line.

Concern about indoor air quality (IAQ) is driving customers to have their IAQ situation assessed and, if necessary, repaired. IAQ has generated so much awareness that you may want to consider offering IAQ assessments to all of your customers as an extra service.

In this edition of the Btu Buddy series, Bob finds an outdoor unit that has been enclosed by a deck. Bob and Btu Buddy come up with a temporary solution to restore adequate cooling and determine where to relocate the unit.