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Doug Eby
Doug Eby, HVAC Technician
Category: HVAC
Satisfied Customers: 12
Experience:  15 Years Navy, commercial, restaurant
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What is the best way to check freon in a heat pump in ...

Customer Question

What is the best way to check freon in a heat pump in winter below 20 degrees? And how to you add to it? I am a A/C tech and have never learned how to charge heatpump in winter correctly. Have calls with frozen heatpumps.
Submitted: 7 years ago.
Category: HVAC
Expert:  macleaner replied 7 years ago.

HiCustomer

What brand of unit is this? What is the tempature you are charging this in Below 20? What type of freon?

Customer: replied 5 years ago.
Any of them. I cannot get freon to go in even in bottle of hot water
Expert:  Doug Eby replied 5 years ago.
Hi. I've worked on trane heatpumps using R22,134 and 404. You don't want to run in heat mode if outside temp is too cold. Some units have a temperature switch that prevents the unit from running in cold weather. Try running in a/c mode & charge that way. If there is a sight flow indicator, check that for bubbles. If not, then go by condensate depression. Check with the manuf for the proper subcooling amount.
Doug

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Doug Eby
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15 Years Navy, commercial, restaurant