Following up on Howard Leonard’s October 10, article, “Hidden Problems Can Cause Carbon Monoxide,” Leonard elaborates on the discharge side of the combustion air system, the flue.

This article explains what knowing the condition of the evaporator coil has to do with charging an air conditioner properly.

One of the main functions of the condenser is to condense the refrigerant sent to it from the compressor, but desuperheating and subcooling are other important functions.

How does it work?

Replacing a compressor in a refrigeration system is never an easy or inexpensive task.

Sometimes it's all in the tools you use.

Use these troubleshooting tips to help you work on air handlers.

Tiny tubes are prone to big blockages.

The myth that the silicon carbide tip cannot be handled because body oils cause contamination is untrue.

Technicians and engineers can benefit from using these shortcuts for estimating and solving operational problems.