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Cold Weather Tests the Limits of Our Mini-Split Heat Pump

by LiveModern Webmaster last modified Feb 13, 2014 01:06 AM
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by Alex Wilson last modified Jan 29, 2014

Author name:  Alex Wilson Blog Category:  Energy Solutions GreenSpec Insights Testing the limits of the air-source heat pump in our new house with this cold weather The interior unit of our Mitubishi air-source heat pump. Click photos to enlarge. Photo Credit: Alex Wilson It’s been pretty chilly outside. A number of people have asked me how our air-source heat pump is making out in the cold weather. I wrote about ths system last fall , well before we had moved in to our new home. Is it keeping us warm? First, if you want to get up to speed on the surprising and counterintuitive nature of how an air-source heat pump works , check out our primer on the topic—which includes a great diagram. We’ve only been living in the house for a few weeks, but so far, so good. Our 18,000 Btu /hour Mitsubishi mini-split heat pump  (MSZ FE18NA indoor unit and MUZ FE18 outdoor unit) is doing remarkably well in keeping us comfortable. We don’t have any oil or gas heating in the house, only the electric heat pump and a small wood stove that we’ve fired up twice so far. The indoor heat pump unit is mounted on a wall next to our kitchen, and it’s been operating pretty steadily in this cold weather. (Even though we’ve heated with wood for decades and have all the wood we could ever use, I’ve been curious how the house will do just on electricity, so have refrained from using the wood stove.) read more






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