When a contractor pitches “older refrigerant” air conditioning or refrigeration equipment, the sales pitch often leans on ...

Refrigerant rules are changing fast in 2026, and that has created a perfect opening for half-true rumors and hard-sell ...

Last month’s column analyzed a closed-door, medium-temperature refrigeration system that incorporated a liquid high-side receiver and a thermostatic expansion valve (TXV) as the metering device. The ...

How can you tell when a system is low on refrigerant? Running a system check can determine whether that’s the case. Consider this scenario: A service technician installs gauges and thermistors on an R ...