Haz_de_nar t1_iv8p7yr wrote
Reply to comment by the_other_b in New dwellings in Washington state must be warmed by heat pumps, rather than furnaces, beginning in July, state board rules Friday by BarnabyWoods
decadently worth checking into based on where you are but they for sure have heat pumps that you dont need a backup. Inverter heat pumps would be the way to go.
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