Technical Support
APR Control Tech Support
You've found the Rawal APR Control, a mechanical, external compressor unloader that adds continuous capacity modulation to DX air-conditioning systems. Pick the path that matches what you need, or call and talk to a real person.
UL Listed · 100,000+ valves installed since 1993
Installing One
Installation
Guides and best practices for installing the APR Control on new or existing equipment.
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Installation & Start-Up Tips
Open PDFAlready Installed
Service & Troubleshooting
Help with servicing, adjusting, or troubleshooting an APR Control in the field.
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APR Control Troubleshooting Guide
Open PDFNew to the APR Control
What Is the APR Control?
Not sure what you're looking at? Learn what the APR Control is, where it's used, and the benefits it delivers.
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