Service and Maintenance

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The big push is on to replace R-22 unitary air conditioners and heat pumps, and it looks like the industry has really and truly decided that R-410A systems are “it.” This article offers an overview of some of the issues related to R-22 and -410A in the field: operating pressure differences, oil characteristics, and temperature glide.

Troubleshooting modern refrigeration and/or air conditioning systems requires a thorough knowledge of the refrigeration system and its functions.

The compressor’s discharge temperature can tell the service technician what is going on inside a refrigeration or air conditioning system.

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.