Manufacturers of refrigerants, controls, and other suppliers distribute hundreds of thousands of pressure-temperature charts to the trade every year. It would be rare indeed to find service ...

The use of ductless heat pump HVAC systems has broadened considerably since they were introduced to the U.S. market decades ago, but their technology isn’t familiar to all technicians or in all parts ...

Mahle Service Solutions’ Smart A/C ArcticPro service machines feature an integrated diagnostic system to test for A/C and HVAC problems during service. The ArcticPro ACX1185 and ACX1285 feature the ...

Since this column's inception, we've received a substantial number of questions concerning air-conditioning troubleshooting. Answering each one would take quite some time, but we will attempt to ...