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What’s wrong with your “dead” units? My AC tech recently fixed my NM11B unit by replacing the evaporator and the heat exchanger/capillary tube (available from Marvel Refrigeration, the company that made Northland fridges before they discontinued the line). It took him about 2 hours to...

Well, about 2 weeks later, it happened again, so obviously I had a leak. On Jay’s advice, I contacted the manufacturer (Marvel Refrigeration — they have discontinued the Northland line but still have parts) and ordered a replacement evaporator ($350; the tech I spoke with strongly suggested I...

Obviously, I meant R-134a.

Yup, it's a SubZero style large refrigerator / freezer, with "replaceable" refrigeration modules (NM11B) mounted on top (one for the freezer, a one for the fridge). Was wanting the fridge unit to hold temps in the low 30's, which it has done for years. And yes, Northland has indeed now...

Greetings: I have a 13 year old Northland NM11B. A couple of years ago, it started being unable to cool below 45F. I have an excellent HVAC technician available (Jay Shook), and he quickly figured out it was just low on R-134a, so he cut the fill tube and sweated on a service port, added some...