Heat Pump Payback in Farmers Branch, TX
Farmers Branch, TX: the heat pump payback math
In Farmers Branch, the extra upfront cost technically comes back, just not before the equipment wears out. Against a like-for-like gas furnace and AC swap, going electric costs $5,500 more up front here. That premium is recovered through $361 of lower running costs every year, landing the payback clock at roughly 15.2 years. Farmers Branch's own numbers say this pencils out only in theory, not in practice.
Not the city you meant?
This runs the same numbers for 3206 US cities, not just Farmers Branch. Look one up here.
Why Farmers Branch's climate drives this number
1620 heating degree days pile up here every year, so Farmers Branch has a mild winter by US standards; the cooling side runs to 3408 cooling degree days, where summers are severe enough that cooling can dominate the annual bill. 18.9°F is the figure equipment gets sized against here, the 99th-percentile cold snap, not an average day, with a low of 9.5°F in the 2024 station record. Worked through the model, that's a seasonal COP of 3.15 on the cold-climate unit fit for this climate. The average winter here is gentle, but sizing follows the cold snaps, and 18.9°F is below the 25°F point where a standard unit leans on resistance backup, so a cold-climate unit is what gets priced for Farmers Branch. Source: NOAA station Addison Airport, 3.8 miles from Farmers Branch, the closest one on record.
The yearly running costs in Farmers Branch
Electricity use for heating alone comes out to about 1,302 kWh a year on the 2000-square-foot reference house; folding in cooling puts the electric bill near $680 a year. Farmers Branch's gas rate of $19.42 per Mcf, applied to the 17 Mcf a year the furnace burns, puts the current furnace-and-AC running cost near $1,041 a year, against 16.15¢ per kWh for electricity. If the current system still worked and you replaced it anyway, the full cost would take longer than the 15-year equipment life to earn back; against buying a new furnace and AC regardless, the 15-year total lands $80 behind.
How sensitive Farmers Branch'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 Farmers Branch at any electricity price. When quotes arrive, compare the heat pump price with a like-for-like furnace and AC replacement: at $361 a year saved, a difference under $2,527 pays back within 7 years here, and under $3,610 within 10.
The other scenario: no gas furnace to begin with
Plenty of homes in Farmers Branch heat with electricity alone, no gas line involved. Swap the comparison to resistance heat instead of gas, and Farmers Branch's answer improves. Switching saves about $696 a year here, a heat pump moving heat rather than generating it needs far less electricity than resistance coils, so the extra $10,000 spent up front comes back in about 14.4 years.
Where Farmers Branch ranks in this dataset
Ranked against the other 3206 cities covered, Farmers Branch comes in at 2647 for heating severity, 1 would be the coldest place in the dataset, and 1112 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 Farmers Branch
About 37,341 people live in Farmers Branch, 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 3.15 seasonal COP, the degree-day corrections, the equipment costs, is documented in the methodology guide. Farmers Branch's 18.9°F design temperature falls on the cold side of the 25°F cutoff the cold-climate unit guide walks through.