In this puzzle, a restaurant manager complains that one of the ice machines in his high-volume establishment isn’t producing enough ice.

Electricity is a powerful tool when harnessed correctly but a lethal danger when handled improperly.

Ask several refrigeration technicians about the best location to place a sight glass, and you will probably get several different answers.

Worn compressor rings and/or leaky compressor suction or discharge valves can cause a lack of cooling in refrigeration and air conditioning systems.

A duct system is the part of an HVAC system that most homeowners don’t consider, yet it determines how well their equipment works.

A combination of mandates and incentives for cleaner energy makes California a fast-growing market for heat pumps.

In this troubleshooting situation, you have been called to a restaurant to check an older model ice machine that isn't working like it should.

Customers are now more aware of their HVAC systems and the air it circulates.

This month’s troubleshooting situation involves an air-to-air, package unit heat pump that is approximately nine years old.

Let’s look at how the density of refrigerant entering the compressor’s cylinders affects the mass flow rate of refrigerant through the compressor.