HeatPumpAtlasUSA: the heat-pump switching calculator

Field notes

The tool starts with a five-digit ZIP code, then asks users to choose a state and system details before producing a cost-and-switching estimate. Its visible coverage extends beyond installation prices to operating costs, panel upgrades, fuel comparisons, and state-specific rebate pages. The homepage displays separate ranges for ducted systems and one-zone mini splits, and says the initial inputs remain in the browser rather than being sent away.