Avon, IN: the heat pump payback math
Avon is a place where a heat pump genuinely costs more to operate than the alternative. $3,500 is what Avon 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. Unfortunately the electric bill outweighs the gas bill it replaces by about $80 a year here, so the extra spend stays unrecovered. There's no spin on that: Avon's numbers say wait.
Why Avon's climate drives this number
Degree days tell the story here: Avon racks up 4285 heating degree days each year (base 65°F), and summers are hot enough that cooling matters as much as heating, with 1278 cooling degree days on the cooling side. The 99% winter design temperature here — the cold snap equipment must be sized for, not the seasonal average — is -0.9°F, against a record low of -6°F. That puts the seasonal coefficient of performance at 2.68 for the recommended cold-climate unit. Avon 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. Climate figures trace to the nearest NOAA station, INDIANAPOLIS INTERNATIONAL AI, 6.4 miles from Avon.
What it actually costs to run, year to year
Modelled on a typical 2000-square-foot house, the heat pump draws about 4,049 kWh a year to keep it warm, plus cooling, for a combined electric bill near $875 a year. Avon's gas rate of 11.49 per Mcf, applied to the 45 Mcf a year the furnace burns, puts its running cost near $795 a year, against 17.03¢ per kWh for electricity. Priced as a standalone purchase rather than against a like-for-like replacement, equipment payback runs past the 15-year equipment life, for a 15-year net position $4,703 behind.
The other scenario: no gas furnace to begin with
Plenty of homes in Avon heat with electricity alone, no gas line involved. 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 $1,255 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 6.4 years.
Where Avon ranks in this dataset
Avon lands at position 1347 out of 3206 cities on heating severity (coldest is 1), and 1625 out of 3206 by population size (biggest is 1). That's the middle third for winter severity among the cities covered here.
Deciding what's next in Avon, IN
About 24,735 people live in Avon, Indiana, 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.
More on how this number was built
The methodology guide walks through exactly how Avon's 2.68 seasonal COP and the rest of this page's numbers get built. Avon's -0.9°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.