If they're in moderate climate, that heat pump can efficiently
and inexpensively heat the house for probably all but a few weeks a winter. Get the HP, and utilize the original system as back up. HP can easily be set up to switch over when needed.
Now, if the house is in Minnesota, different answer.
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In response to this post by KeithHokie89)
Posted: 08/29/2020 at 11:21AM