Jacksonville, TX: the heat pump payback math
This one's marginal in Jacksonville: it only clears if you stay long enough. 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 $312 of lower running costs every year, landing the payback clock at roughly 11.2 years. Whether that's worth it in Jacksonville depends on how many years you expect to own the place.
Why Jacksonville's climate drives this number
Jacksonville barely has a winter to speak of — 1060 heating degree days a year against a 65°F base — and summers are severe enough that cooling can dominate the annual bill, at 3212 cooling degree days. 23.7°F is the figure equipment gets sized against here — the 99th-percentile cold snap, not an average day — with a record low of 13.6°F on file. Worked through the model, that's a seasonal COP of 3.27 on the cold-climate unit fit for this climate. A cold-climate unit is the right call in Jacksonville — below 25°F design temperature, a standard heat pump leans hard on electric-resistance backup, which erases most of the savings. Climate figures trace to the nearest NOAA station, RUSK COUNTY AIRPORT, 27.7 miles from Jacksonville.
Jacksonville's running-cost comparison, in dollars
Electricity use for heating alone comes out to about 821 kWh a year on the 2000-square-foot reference house; folding in cooling puts the electric bill near $575 a year. The gas furnace it replaces burns roughly 11 Mcf a year at 19.42 per Mcf here, for a running cost near $887 a year (electricity here runs 16.15¢/kWh). Priced as a standalone purchase rather than against a like-for-like replacement, equipment payback runs about 43.3 years, for a 15-year net position $1,177 ahead.
Electric resistance heat in Jacksonville, compared
Plenty of homes in Jacksonville 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. About $531 a year comes back this way, enough that the 15.1-year payback clears the $8,000 premium comfortably within the equipment's life.
How Jacksonville compares nationally
Ranked against the other 3206 cities covered, Jacksonville comes in at 2865 for heating severity — 1 would be the coldest place in the dataset — and 2430 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.
Deciding what's next in Jacksonville, TX
About 14,639 people live in Jacksonville, 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.
Reading further on this page's numbers
Nothing above is a black box: the methodology guide shows the full arithmetic behind Jacksonville's 3.27 seasonal COP and payback figure. Jacksonville's 23.7°F design temperature falls on the cold side of the 25°F cutoff the cold-climate unit guide walks through.