Heat Pump Payback in McAllen, TX
Should McAllen switch to a heat pump?
In McAllen, a heat pump pays for itself within a reasonable window. Swap a failed furnace and AC for a heat pump rather than buying like-for-like, and the extra cost here runs $3,000. McAllen's residents would see roughly $381 a year back in running costs, putting the payback around 7.9 years. The window here is reasonable, and it's specific to what McAllen actually pays for power and gas.
Compare against another city
This runs the same numbers for 3206 US cities, not just McAllen. Look one up here.
McAllen's weather, in the numbers that matter
319 heating degree days pile up here every year, so McAllen barely has a winter to speak of; the cooling side runs to 4957 cooling degree days, where summers are severe enough that cooling can dominate the annual bill. 39°F is the figure equipment gets sized against here, the 99th-percentile cold snap, not an average day, with a low of 27°F in the 2024 station record. Worked through the model, that's a seasonal COP of 3.36 on the standard unit fit for this climate. McAllen's winters don't get cold enough to need the cold-climate premium, a standard unit holds up fine. Climate figures trace to the nearest NOAA station, Mc Allen Miller International Airport, 2.9 miles from McAllen.
The yearly running costs in McAllen
On a typical 2000-square-foot house, heating needs here are close to nil, so the heat pump's electric bill, near $721 a year, is almost entirely air conditioning. Heating barely registers here, a gas furnace would burn about 3 Mcf a year at $19.42 per Mcf, so nearly all of the $1,102 a year the existing setup costs to run is the old air conditioner. At 16.15¢/kWh, the saving in McAllen comes from the heat pump being a more efficient air conditioner, not from heating. 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 $2,710 ahead.
How sensitive McAllen's result is to prices
In McAllen the cooling savings outweigh the extra electricity for heating, so no plausible change in the electricity rate would make the old furnace and AC cheaper to run. A useful quote test for McAllen: the heat pump is worth it within a decade if it costs less than $3,810 more than replacing the furnace and AC, and within 7 years if the gap is under $2,667.
The other scenario: no gas furnace to begin with
Plenty of homes in McAllen heat with electricity alone, no gas line involved. Compared with baseboard or electric-furnace resistance heat, the numbers shift in the heat pump’s favor. The gap still doesn't close: the $7,500 incremental cost outlasts the 15-year equipment life here even against resistance heat.
How McAllen compares nationally
Ranked against the other 3206 cities covered, McAllen comes in at 3113 for heating severity, 1 would be the coldest place in the dataset, and 186 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 McAllen
McAllen, Texas is home to about 148,782 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. Given the math above, McAllen is a place worth lining up quotes ahead of a breakdown, not waiting for one.
Ask a local HVAC contractor for a quote before committing either way.
More on how this number was built
Nothing above is a black box: the methodology guide shows the full arithmetic behind McAllen's 3.36 seasonal COP and payback figure. Homes in McAllen without gas service should read the electric-resistance comparison instead, the numbers there differ from the gas case above.