When working on a refrigeration system, technicians may occasionally come across one where the type of refrigerant is unknown.

Refrigerant recovery machines are one of the most expensive tools that contractors own, so it’s important to make the right purchase decision.

In this month’s troubleshooting problem, the equipment is a reach-in food and beverage storage unit.

Long shutdowns can wreak havoc on refrigeration and air conditioning systems if certain steps are not taken.

Today, the use of pressed connections for joining both hard drawn and soft copper tubing is gaining popularity for many reasons.

In this month’s troubleshooting problem, the equipment is a split system that’s approximately 8 years old.

Refrigeration and a/c compressors are vapor compressors, meaning they are designed to compress refrigerant vapor, not liquid refrigerant.

First, attack the distribution system. Second, replace equipment.

A challenge that many companies face is getting technicians to consistently measure static pressure.

In this troubleshooting situation, a technician has responded to a complaint of “not cooling” on a six-year-old R-410A split system.