Heat Pump Payback in Somerset, KY
Heat pump vs. gas furnace in Somerset, KY
Somerset technically pencils out, but only past the point the equipment would need replacing anyway. Against a like-for-like gas furnace and AC swap, going electric costs $5,500 more up front here. Lower bills claw that back: about $166 saved annually, for a payback of roughly 33.1 years. That's a technicality, not a recommendation, for anyone actually living in Somerset.
Compare against another city
This runs the same numbers for 3206 US cities, not just Somerset. Look one up here.
Somerset's weather, in the numbers that matter
Somerset has a real but manageable winter, 3374 heating degree days a year against a 65°F base, and summers are hot enough that cooling matters as much as heating, at 1392 cooling degree days. 8.6°F is the figure equipment gets sized against here, the 99th-percentile cold snap, not an average day, with a low of -4°F in the 2024 station record. Worked through the model, that's a seasonal COP of 2.91 on the cold-climate unit fit for this climate. Somerset needs the cold-climate class of unit: past a 25°F design temperature a standard heat pump falls back on resistance backup often enough to eat the savings. These numbers come from Somerset-Pulaski Co-J.T. Wils, the closest NOAA station, 2.3 miles out.
The yearly running costs in Somerset
A 2000-square-foot house here would pull roughly 2,936 heating kilowatt-hours annually on top of cooling, totalling about $593 a year on electricity. That compares with roughly 35 Mcf a year of gas at Somerset's $14.23 per-Mcf rate, about $760 a year with the old AC included, against a local electricity rate of 14.39¢/kWh. Priced as a standalone purchase, with a working furnace ripped out early, payback would take longer than the 15-year equipment life. Measured against the like-for-like replacement instead, a household here ends 15 years $3,005 behind.
The break-even point in Somerset
Gas would only overtake the heat pump in Somerset if electricity rose past 21.6¢/kWh from 14.39¢, or gas fell under $9.50 per Mcf from $14.23. A useful quote test for Somerset: the heat pump is worth it within a decade if it costs less than $1,660 more than replacing the furnace and AC, and within 7 years if the gap is under $1,162.
The other scenario: no gas furnace to begin with
Plenty of homes in Somerset heat with electricity alone, no gas line involved. Compared with baseboard or electric-furnace resistance heat, the numbers shift in the heat pump’s favor. About $896 a year comes back this way, enough that the 11.2-year payback clears the $10,000 premium comfortably within the equipment's life.
Somerset against the rest of the country
Somerset lands at position 1812 out of 3206 cities on heating severity (coldest is 1), and 2748 out of 3206 by population size (biggest is 1). That's the middle third for winter severity among the cities covered here.
Next step if you live in Somerset
Somerset, Kentucky is home to about 12,389 people, and the figures above are the same ones a local HVAC contractor uses to size and quote a system, this site doesn't guess where a real quote would land, it just tells you whether it's worth asking for one. In Somerset, nothing is lost by holding off until the current equipment genuinely fails.
Ask a local HVAC contractor for a quote before committing either way.
Where Somerset's figure comes from
Every constant behind this page, the 2.91 seasonal COP, the degree-day corrections, the equipment costs, is documented in the methodology guide. Somerset's 8.6°F design temperature is below the 25°F line, which is why a cold-climate unit is the right call here, see what that changes in the cold-climate unit guide.