Evacuating a Refrigeration System

Pulling a good vacuum before charging a new system with refrigerant or after a repair is essential for the proper operation of an air conditioning or heat pump system.  

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Testing a Start Capacitor and Potential Relay

Start Capacitor Overview:  Functions and Testing.

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Are All Capacitors Created Equal?

It's that time of year when we see a run on capacitors.  This article explains some facts about capacitor quality.

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Troubleshooting a Reversing Valve

Troubleshooting a reversing valve can be tricky.  Here's a tip sheet to help you confirm your diagnosis!

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Troubleshooting a Thermal Expansion Valve (TXV)

Testing a TXV can done in just a few simple steps. This video will show the technician how to determine whether the TXV is modulating correcting.

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