Should Jackson switch to a heat pump?
Jackson technically pencils out, but only past the point the equipment would need replacing anyway. 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 $133 of lower running costs every year, landing the payback clock at roughly 26.3 years. Jackson's own numbers say this pencils out only in theory, not in practice.
The climate behind Jackson's payback figure
Jackson has a mild winter by US standards — 2708 heating degree days a year against a 65°F base — and summers are hot enough that cooling matters as much as heating, at 2046 cooling degree days. The 99% winter design temperature here — the cold snap equipment must be sized for, not the seasonal average — is 8.6°F, against a record low of -9.9°F. That puts the seasonal coefficient of performance at 2.91 for the recommended cold-climate unit. Jackson needs the cold-climate class of unit: past a 25°F design temperature a standard heat pump falls back on resistance backup often enough to eat the savings. Source: NOAA station MCKELLAR-SIPES RGNL ARPT, 6.4 miles from Jackson — the closest one on record.
Jackson's running-cost comparison, in dollars
A 2000-square-foot house here would pull roughly 2,356 heating kilowatt-hours annually on top of cooling, totalling about $569 a year on electricity. That compares with roughly 28 Mcf a year of gas at Jackson's 11.84 per-Mcf rate — about $702 a year — against a local electricity rate of 13.87¢/kWh. Buy it outright, not incrementally, and payback stretches to 101.6 years; over 15 years the net position sits $1,506 behind.
The other scenario: no gas furnace to begin with
Plenty of homes in Jackson 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. The saving here runs about $750 a year, which recovers the extra $8,000 spent going electric in roughly 10.7 years.
How Jackson compares nationally
Jackson lands at position 2035 out of 3206 cities on heating severity (coldest is 1), and 561 out of 3206 by population size (biggest is 1). That's the middle third for winter severity among the cities covered here.
What to do with this number in Jackson
About 69,303 people live in Jackson, Tennessee, 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
The methodology guide walks through exactly how Jackson's 2.91 seasonal COP and the rest of this page's numbers get built. At a 8.6°F design temperature, Jackson sits in cold-climate territory; the guide to that class of unit explains why.