Heat pump vs. gas furnace in Colleyville, TX
In Colleyville, the math is close enough that it comes down to how long you plan to stay. 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). That premium is recovered through $348 of lower running costs every year, landing the payback clock at roughly 10.1 years. It's a genuine toss-up here — Colleyville's numbers don't point clearly either way.
Colleyville's weather, in the numbers that matter
Degree days tell the story here: Colleyville racks up 1667 heating degree days each year (base 65°F), and summers are severe enough that cooling can dominate the annual bill, with 3318 cooling degree days on the cooling side. 12.9°F is the figure equipment gets sized against here — the 99th-percentile cold snap, not an average day — with a record low of 10.9°F on file. Worked through the model, that's a seasonal COP of 3.01 on the cold-climate unit fit for this climate. A cold-climate unit is the right call in Colleyville — below 25°F design temperature, a standard heat pump leans hard on electric-resistance backup, which erases most of the savings. These numbers come from DALLAS/FT WORTH INTERNATIONAL, the closest NOAA station, 7.6 miles out.
Colleyville's running-cost comparison, in dollars
Modelled on a typical 2000-square-foot house, the heat pump draws about 1,402 kWh a year to keep it warm, plus cooling, for a combined electric bill near $683 a year. That compares with roughly 17 Mcf a year of gas at Colleyville's 19.42 per-Mcf rate — about $1,032 a year — against a local electricity rate of 16.15¢/kWh. Priced as a standalone purchase rather than against a like-for-like replacement, equipment payback runs about 38.8 years, for a 15-year net position $1,724 ahead.
The other scenario: no gas furnace to begin with
Not every home in Colleyville 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 $693 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 11.5 years.
Where Colleyville ranks in this dataset
Colleyville lands at position 2616 out of 3206 cities on heating severity (coldest is 1), and 1540 out of 3206 by population size (biggest is 1). That's the mildest third of cities covered, where utility rates carry more of the answer than climate does.
Next step for 26,012 people in Colleyville
Colleyville, Texas is home to about 26,012 people, and the figures above are the same ones a local HVAC contractor uses to size and quote a system — this site doesn't guess where a real quote would land, it just tells you whether it's worth asking for one. In Colleyville, nothing is lost by holding off until the current equipment genuinely fails.
Line up a few local HVAC quotes before you decide.
Where Colleyville's figure comes from
Nothing above is a black box: the methodology guide shows the full arithmetic behind Colleyville's 3.01 seasonal COP and payback figure. Colleyville's 12.9°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.