Is a heat pump worth it in Jeffersontown?

The payback math works in Jeffersontown on paper, past the equipment's own working life. $3,500 is what Jeffersontown would pay extra to go electric rather than replace the furnace and AC with the same again, once the $2,000 federal credit is applied. Lower bills claw that back: about $162 saved annually, for a payback of roughly 21.6 years. That's a technicality, not a recommendation, for anyone actually living in Jeffersontown.

How cold Jeffersontown actually gets

Degree days tell the story here: Jeffersontown racks up 3632 heating degree days each year (base 65°F), and summers are hot enough that cooling matters as much as heating, with 1460 cooling degree days on the cooling side. Sizing runs off the design temperature, not the average day: 5°F here (record low 1.9°F), which works out to a seasonal COP of 2.82 for the cold-climate class of unit this climate calls for. Jeffersontown 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. These numbers come from BOWMAN FIELD AIRPORT, the closest NOAA station, 5.4 miles out.

Jeffersontown's running-cost comparison, in dollars

Modelled on a typical 2000-square-foot house, the heat pump draws about 3,261 kWh a year to keep it warm, plus cooling, for a combined electric bill near $648 a year. Jeffersontown's gas rate of 14.23 per Mcf, applied to the 38 Mcf a year the furnace burns, puts its running cost near $811 a year, against 14.39¢ per kWh for electricity. Priced as a standalone purchase rather than against a like-for-like replacement, equipment payback runs about 83.3 years, for a 15-year net position $1,068 behind.

The other scenario: no gas furnace to begin with

Gas isn't universal in Jeffersontown — many houses run on electric heat already. Swap the comparison to resistance heat instead of gas, and Jeffersontown's answer improves. The saving here runs about $947 a year, which recovers the extra $8,000 spent going electric in roughly 8.4 years.

Where Jeffersontown ranks in this dataset

Jeffersontown lands at position 1726 out of 3206 cities on heating severity (coldest is 1), and 1372 out of 3206 by population size (biggest is 1). That's the middle third for winter severity among the cities covered here.

Next step for 29,388 people in Jeffersontown

Jeffersontown, Kentucky is home to about 29,388 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 Jeffersontown, nothing is lost by holding off until the current equipment genuinely fails.

Ask a local HVAC contractor for a quote before committing either way.

Reading further on this page's numbers

The methodology guide walks through exactly how Jeffersontown's 2.82 seasonal COP and the rest of this page's numbers get built. At a 5°F design temperature, Jeffersontown sits in cold-climate territory; the guide to that class of unit explains why.