Will a heat pump pay off in Murphy, TX?
This one's marginal in Murphy: it only clears if you stay long enough. Swap a failed furnace and AC for a heat pump rather than buying like-for-like, and the extra cost here runs $3,500 after a $2,000 federal tax credit. That premium is recovered through $334 of lower running costs every year, landing the payback clock at roughly 10.5 years. Whether that's worth it in Murphy depends on how many years you expect to own the place.
Why Murphy's climate drives this number
1853 heating degree days pile up here every year, so Murphy has a mild winter by US standards; the cooling side runs to 2871 cooling degree days, where summers are severe enough that cooling can dominate the annual bill. 15.8°F is the figure equipment gets sized against here — the 99th-percentile cold snap, not an average day — with a record low of 9.5°F on file. Worked through the model, that's a seasonal COP of 3.08 on the cold-climate unit fit for this climate. Below the 25°F line where a standard machine starts leaning on resistance backup, Murphy sits firmly in cold-climate territory, so that's the class of unit priced here. Climate figures trace to the nearest NOAA station, RALPH M HALL ROCKWALL MUNICIP, 11.6 miles from Murphy.
What it actually costs to run, year to year
Modelled on a typical 2000-square-foot house, the heat pump draws about 1,523 kWh a year to keep it warm, plus cooling, for a combined electric bill near $641 a year. Murphy's gas rate of 19.42 per Mcf, applied to the 19 Mcf a year the furnace burns, puts its running cost near $976 a year, against 16.15¢ per kWh for electricity. Looked at as a full purchase rather than an incremental one, payback here is roughly 40.4 years, leaving the 15-year total $1,515 ahead.
If your home heats with electric baseboard instead of gas
Not every home in Murphy has gas service. Swap the comparison to resistance heat instead of gas, and Murphy's answer improves. The saving here runs about $717 a year, which recovers the extra $8,000 spent going electric in roughly 11.2 years.
Murphy against the rest of the country
Murphy lands at position 2512 out of 3206 cities on heating severity (coldest is 1), and 1836 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.
What to do with this number in Murphy
About 21,109 people live in Murphy, 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.
Get quotes from local HVAC contractors before deciding.
Where Murphy's figure comes from
The methodology guide walks through exactly how Murphy's 3.08 seasonal COP and the rest of this page's numbers get built. At a 15.8°F design temperature, Murphy sits in cold-climate territory; the guide to that class of unit explains why.