Troy, OH: the heat pump payback math
Troy 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 $3,500 more up front here (already netting out a $2,000 tax credit). Troy's residents would see roughly $4 a year back in running costs, putting the payback around 967 years. Troy's own numbers say this pencils out only in theory, not in practice.
Why Troy's climate drives this number
4252 heating degree days pile up here every year, so Troy has a real but manageable winter; the cooling side runs to 1293 cooling degree days, where summers are hot enough that cooling matters as much as heating. The 99% winter design temperature here — the cold snap equipment must be sized for, not the seasonal average — is 3°F, against a record low of 0°F. That puts the seasonal coefficient of performance at 2.77 for the recommended cold-climate unit. A cold-climate unit is the right call in Troy — below 25°F design temperature, a standard heat pump leans hard on electric-resistance backup, which erases most of the savings. Climate figures trace to the nearest NOAA station, J.M.COX DAYTON INTERNATIONAL, 9.3 miles from Troy.
What it actually costs to run, year to year
A 2000-square-foot house here would pull roughly 3,887 heating kilowatt-hours annually on top of cooling, totalling about $918 a year on electricity. Troy's gas rate of 13.85 per Mcf, applied to the 44 Mcf a year the furnace burns, puts its running cost near $922 a year, against 18.40¢ per kWh for electricity. Buy it outright, not incrementally, and payback stretches to 3729.7 years; over 15 years the net position sits $3,446 behind.
Electric resistance heat in Troy, compared
Not every home in Troy has gas service. Against electric-resistance heat — baseboard or an electric furnace, both 100% efficient but still just resistance — the case for switching gets stronger here. Switching saves about $1,371 a year here — a heat pump moving heat rather than generating it needs far less electricity than resistance coils — so the extra $8,000 spent up front comes back in about 5.8 years.
How Troy compares nationally
Ranked against the other 3206 cities covered, Troy comes in at 1372 for heating severity — 1 would be the coldest place in the dataset — and 1468 by population, where 1 is largest. That's the middle third for winter severity among the cities covered here.
What to do with this number in Troy
About 27,122 people live in Troy, Ohio, 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.
Ask a local HVAC contractor for a quote before committing either way.
Where Troy's figure comes from
Every constant behind this page — the 2.77 seasonal COP, the degree-day corrections, the equipment costs — is documented in the methodology guide. Troy's 3°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.