4 ms·
Modern high performance heat pumps keep 100% of performance down to 5F and often below. Shutoff is around -22f. Google “hyperheat” to see the Mitsubishi line.
by brianwawok 3y ago
Modern high performance heat pumps keep 100% of performance down to 5F and often below. Shutoff is around -22f. Google “hyperheat” to see the Mitsubishi line.
The shutoff at 25F heat pump thing is people installing a device not suited for their climate. I live in IN and 90% of the people around me bought a 25F crap heat pump “for the environment”, and are actually doing more harm and eating $600 electric bills. People don’t do enough research before buying heat pumps.
- uxp100 3y agoAre the 25F devices cheaper? Cuz heat pumps are very expensive and I could see someone thinking a cheaper model was a halfway green measure. (Although with the way the midwestern winter has been so far it they might be fine this year)
- huytersd 3y agoYeah, I’m in NC. I need it for maybe one month, and only at night in a year. I also was replacing an existing gas heat system so I could reuse the underground tanks and plumbing so it made sense for me. I held off for the time being because I used that budget for a solar roof instead :)
- oceanplexian 3y agoLook at a COP vs temperature chart for one of those “hyperheat” heat pumps. Once you get down to very low temperatures it’s no better than a resistance heater, and several times more expensive than gas heat.