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.

A quick review of EPR valve basic designs, principles of operation, and application of these valves.

Here are some tips to a quick recovery after experiencing a solenoid valve malfunction.

Refrigerant control becoming a more important factor in gaining reliability.