Heat Pump Payback in Seguin, TX
Seguin, TX: the heat pump payback math
In Seguin, the math is close enough that it comes down to how long you plan to stay. Swap a failed furnace and AC for a heat pump rather than buying like-for-like, and the extra cost here runs $3,000. That premium is recovered through $333 of lower running costs every year, landing the payback clock at roughly 9 years. Whether that's worth it in Seguin depends on how many years you expect to own the place.
Checking a different city
This runs the same numbers for 3206 US cities, not just Seguin. Look one up here.
Why Seguin's climate drives this number
Degree days tell the story here: Seguin racks up 1026 heating degree days each year (base 65°F), and summers are severe enough that cooling can dominate the annual bill, with 3725 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 26.1°F, and the coldest daily reading in the 2024 station record was 15.1°F. That puts the seasonal coefficient of performance at 2.98 for the recommended standard unit. A standard ducted system is enough here; Seguin's design temperature doesn't justify the cold-climate premium. These numbers come from New Braunfels Municipal AP, the closest NOAA station, 9.4 miles out.
The yearly running costs in Seguin
Modelled on a typical 2000-square-foot house, the heat pump draws about 872 kWh a year to keep it warm, plus cooling, for a combined electric bill near $654 a year. Seguin's gas rate of $19.42 per Mcf, applied to the 11 Mcf a year the furnace burns, puts the current furnace-and-AC running cost near $987 a year, against 16.15¢ per kWh for electricity. Buying outright rather than at replacement time stretches payback to longer than the 15-year equipment life. Over 15 years, compared with a like-for-like replacement, the heat pump leaves you $2,002 ahead.
How sensitive Seguin's result is to prices
Because the heat pump's better air conditioning saves more electricity than its heating uses, it stays cheaper to run than the current furnace and AC in Seguin at any electricity price. When quotes arrive, compare the heat pump price with a like-for-like furnace and AC replacement: at $333 a year saved, a difference under $2,331 pays back within 7 years here, and under $3,330 within 10.
If your home heats with electric baseboard instead of gas
Plenty of homes in Seguin 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 $546 a year here, a heat pump moving heat rather than generating it needs far less electricity than resistance coils, so the extra $7,500 spent up front comes back in about 13.7 years.
Where Seguin ranks in this dataset
Ranked against the other 3206 cities covered, Seguin comes in at 2892 for heating severity, 1 would be the coldest place in the dataset, and 1060 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.
Next step if you live in Seguin
About 38,789 people live in Seguin, 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.
Reading further on this page's numbers
Every constant behind this page, the 2.98 seasonal COP, the degree-day corrections, the equipment costs, is documented in the methodology guide. Not every home in Seguin has gas; the guide comparing a heat pump against electric baseboard covers that case separately.