My line of work often has me working alongside refrigeration engineers and technicians, and so when one of my refrigerators would malfunction, their brains were right there ready for me to pick for information. To condense the issue of the EPA’s influence on residential refrigeration appliances, which would include dehumidifiers, down to one simple concept: They have vastly reduced the amount of refrigerant used in an appliance of a given class and size. The result is that, because the refrigerant tends to condense and pool into the coldest part of the system, the pump sometimes starves and either temporarily fails to cool, or eventually completely fails due to lack of lubrication. The classic scenario is the garage refrigerator which fails to cool when the garage gets cold, all of the refrigerant is pooled outside the ice box in the condenser, and the constantly-running starved pump actually conducts heat to the evaporator, which in turn turns your refrigerator into an easy-bake oven. Do this a few times, and it will cost you more in groceries than the price of a new refrigerator.I have 2 frigidare dehumidifiers that are complete garbage, inside of two years.. I bought one for my main basement and another for a small room in my basement. They both stopped running and showed an error code, in two years time. I think my parents still have the same dehumidifiers from when I was a kid. Isn't being green great?? They use a lot less energy when their not working properly. That's $400 right down the crapper.
I haven’t specifically asked about dehumidifiers, but having had several stop working on cold days in my basement, and then magically recover when it gets warmer, I suspect they must have a similar issue.