In this troubleshooting situation you have responded to a complaint that a 4-ton package unit air conditioner is not cooling. When you arrive, you find that the indoor air handler is running, the ...

A good digital multimeter (DMM) is key to diagnosing compressor problems in general. For instance, in a previous article (May 15 issue of The NEWS) we discussed using the DMM to read suction and ...

Is your AC blowing warm air? Before calling a pro, check your filter, thermostat, and outdoor unit for issues.

With temperatures rising rapidly across many parts of India and the mercury crossing 45°C in several regions, air conditioners have become an essential part of daily life. During extreme summer heat, ...

Summer heat pushes air conditioners to their limits, and HVAC technicians keep spotting the same costly mistake every year. Homeowners often dismiss early warning signs that their cooling systems ...