Heat pump vs. gas furnace in Elgin, TX
This one's marginal in Elgin: it only clears if you stay long enough. $3,500 is what Elgin 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. Elgin's residents would see roughly $304 a year back in running costs, putting the payback around 11.5 years. Whether that's worth it in Elgin depends on how many years you expect to own the place.
Why Elgin's climate drives this number
Elgin barely has a winter to speak of — 1053 heating degree days a year against a 65°F base — and summers are severe enough that cooling can dominate the annual bill, at 3138 cooling degree days. Sizing runs off the design temperature, not the average day: 21.2°F here (record low 15.8°F), which works out to a seasonal COP of 3.21 for the cold-climate class of unit this climate calls for. Below the 25°F line where a standard machine starts leaning on resistance backup, Elgin sits firmly in cold-climate territory, so that's the class of unit priced here. These numbers come from AUSTIN EXECUTIVE AIRPORT, the closest NOAA station, 10.8 miles out.
What it actually costs to run, year to year
Modelled on a typical 2000-square-foot house, the heat pump draws about 831 kWh a year to keep it warm, plus cooling, for a combined electric bill near $566 a year. That compares with roughly 11 Mcf a year of gas at Elgin's 19.42 per-Mcf rate — about $870 a year — against a local electricity rate of 16.15¢/kWh. Looked at as a full purchase rather than an incremental one, payback here is roughly 44.5 years, leaving the 15-year total $1,053 ahead.
If your home heats with electric baseboard instead of gas
Not every home in Elgin 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 $521 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 15.4 years.
Where Elgin ranks in this dataset
Ranked against the other 3206 cities covered, Elgin comes in at 2876 for heating severity — 1 would be the coldest place in the dataset — and 2740 by population, where 1 is largest. That's the mildest third of cities covered, where utility rates carry more of the answer than climate does.
What to do with this number in Elgin
About 12,438 people live in Elgin, Texas, 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.
Line up a few local HVAC quotes before you decide.
More on how this number was built
Every constant behind this page — the 3.21 seasonal COP, the degree-day corrections, the equipment costs — is documented in the methodology guide. Elgin's 21.2°F design temperature falls on the cold side of the 25°F cutoff the cold-climate unit guide walks through.