Service and Maintenance

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There are four main components of the refrigeration cycle. Do you know what they are and how a metering device works with those components?

Reversing valves can be difficult to remove because they have four solder joints to deal with at the same time and, to make matters worse, they are very heat sensitive.

Charging air conditioning systems is much different than charging refrigeration systems.

The method used to prove flame in most gas-fired products produced in the last seven or eight years is often misunderstood.

The key is to size, select, and install them correctly.

Most compressors that have positive oil pumps also have a control that senses oil pressure and acts as a safety device whenever the oil pressure falls below a certain threshold level.

A common problem facing refrigeration and air conditioning service technicians and contractors is that of superheat hunting by thermostatic expansion valves (TXVs).

Understanding the fundamentals of heat loss and heat gain is critical to sizing a new or replacement heating-cooling system.

Referigeration piping basics

Trapped air can cause refrigeration problems.