Crankcase heaters have an important job: they keep refrigerant from migrating to the compressor during the off cycle. As such, we need to take a thoughtful approach to wiring them depending on what we have available, whether that's a single-pole contactor, a double-pole contactor, or a White-Rodgers SureSwitch. Our latest video covers some tips for crankcase heaters and refrigerant charging. You can watch it on our website at: https://buff.ly/lfaBshd | HVAC School

Check out these 5 common problems found with contactors when troubleshooting air conditioning systems! Remember to check out our articles with many descriptive pics! https://www.acservicetech.com/articles Do you have what it takes to ace our quizzes? https://www.acaservicetech.com/quizzes Check out out Book, Ebook, 1,000 question workbook, and quick cards at https://www.acservicetech.com/ac-book | AC Service Tech LLC

644K views · 11K reactions | How to diagnose a bad contactor part 2. Advice from an hvac technician #hvactips #hvactechnician #HVACExperts Disclaimer: if you are not comfortable working with electrical do not try this at home | Alex Ivey | Facebook

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