Do I still need my old heating system, or a back-up system for cold weather?
Mitsubishi Hyperheat H2I® model heat pumps provide full system capacity to 5°F, and efficient operation to -13°F. Here in Vermont, Mitsubishi heat pumps are a perfect choice for year around comfort and efficiency. However, based on the heat loads of your building, you may need supplemental heating on the coldest nights of the year to maintain consistent indoor comfort. However it's important to note that in Vermonts Champlain Valley, an average much less than 1% of our heating load each year occurs when outdoor temperatures are below 0°F.