Observed arrival · 2026-10-28
MiniSplitZip estimates mini-split heating costs by ZIP code
A public calculator estimates annual mini-split heating costs using local weather, energy prices, and certified cold-climate system data.
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- U.S. homeowners comparing heat-pump heating costs
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- ZIP codes are matched locally to one of 122 weather stations; the page says they are not stored or sent.
Field notes
The estimate combines local weather with state electricity and fuel prices, and lets users adjust the assumed heating load and furnace efficiency. The page says its ZIP lookup runs from a file on the page; users can also inspect linked source data and compare costs across cities. Its model uses a 65°F balance point and adds electric resistance backup when the modeled unit cannot meet the load.
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