Heat pump vs gas furnace in Minnesota — the honest math
A 2,000 sqft home in very-cold Minnesota (2,400 EFLH) with a design load of 104,000 BTU/hr burns about 1,500 therms of gas per year at 90% AFUE — roughly $2,145 at $1.43/therm. A cold-climate heat pump at HSPF 10 uses about 14,800 kWh — roughly $2,220 at $0.15/kWh. The difference is $75. For a larger home or one with a lower-AFUE furnace, the gap widens in the heat pump's favor. For a super-efficient home, gas stays cheaper. The math is close enough that the decision rides on other factors — AC replacement, rebates, and personal preference.