Should Franklin switch to a heat pump?
The payback math works in Franklin on paper, past the equipment's own working life. $3,500 is what Franklin would pay extra to go electric rather than replace the furnace and AC with the same again, once the $2,000 federal credit is applied. Franklin's residents would see roughly $193 a year back in running costs, putting the payback around 18.1 years. Franklin's own numbers say this pencils out only in theory, not in practice.
Why Franklin's climate drives this number
Franklin has a real but manageable winter — 3009 heating degree days a year against a 65°F base — and summers are hot enough that cooling matters as much as heating, at 1883 cooling degree days. Sizing runs off the design temperature, not the average day: 10°F here (record low 1°F), which works out to a seasonal COP of 2.94 for the cold-climate class of unit this climate calls for. A cold-climate unit is the right call in Franklin — below 25°F design temperature, a standard heat pump leans hard on electric-resistance backup, which erases most of the savings. These numbers come from BOW GRN-WARREN CO. RGNL AP, the closest NOAA station, 18.6 miles out.
Franklin's running-cost comparison, in dollars
Modelled on a typical 2000-square-foot house, the heat pump draws about 2,592 kWh a year to keep it warm, plus cooling, for a combined electric bill near $604 a year. The gas furnace it replaces burns roughly 31 Mcf a year at 14.23 per Mcf here, for a running cost near $797 a year (electricity here runs 14.39¢/kWh). Buy it outright, not incrementally, and payback stretches to 69.9 years; over 15 years the net position sits $603 behind.
The other scenario: no gas furnace to begin with
Gas isn't universal in Franklin — many houses run on electric heat already. Compared with baseboard or electric-furnace resistance heat, the numbers shift in the heat pump’s favor. About $844 a year comes back this way, enough that the 9.5-year payback clears the $8,000 premium comfortably within the equipment's life.
Franklin against the rest of the country
Among 3206 cities, Franklin's winter puts it at rank 1923 for severity, while its size puts it at rank 3086 for population — 1 in both cases being the extreme. That's the middle third for winter severity among the cities covered here.
Next step for 10,524 people in Franklin
About 10,524 people live in Franklin, Kentucky, and every number on this page is what a contractor would actually work from when quoting a system here — the point isn't to replace that quote, it's to tell you whether to bother asking for one. Here, there's no cost penalty to waiting until your current furnace or AC actually needs replacing.
Get quotes from local HVAC contractors before deciding.
More on how this number was built
Nothing above is a black box: the methodology guide shows the full arithmetic behind Franklin's 2.94 seasonal COP and payback figure. At a 10°F design temperature, Franklin sits in cold-climate territory; the guide to that class of unit explains why.