Heat Pump Payback in Shepherdsville, KY
Will a heat pump pay off in Shepherdsville, KY?
The payback math works in Shepherdsville on paper, past the equipment's own working life. Against a like-for-like gas furnace and AC swap, going electric costs $5,500 more up front here. Lower bills claw that back: about $192 saved annually, for a payback of roughly 28.6 years. That's a technicality, not a recommendation, for anyone actually living in Shepherdsville.
Checking a different city
Shepherdsville is one of 3206 cities covered here, each run through the same model. Search another below.
How cold Shepherdsville actually gets
Shepherdsville has a real but manageable winter, 3192 heating degree days a year against a 65°F base, and summers are hot enough that cooling matters as much as heating, at 1992 cooling degree days. 6.1°F is the figure equipment gets sized against here, the 99th-percentile cold snap, not an average day, with a low of 3°F in the 2024 station record. Worked through the model, that's a seasonal COP of 2.85 on the cold-climate unit fit for this climate. Shepherdsville 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. Climate figures trace to the nearest NOAA station, Louisville Intl-Standiford Fi, 13.9 miles from Shepherdsville.
The yearly running costs in Shepherdsville
Electricity use for heating alone comes out to about 2,836 kWh a year on the 2000-square-foot reference house; folding in cooling puts the electric bill near $653 a year. That compares with roughly 33 Mcf a year of gas at Shepherdsville's $14.23 per-Mcf rate, about $845 a year with the old AC included, against a local electricity rate of 14.39¢/kWh. 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 $2,619 behind.
How sensitive Shepherdsville's result is to prices
Gas would only overtake the heat pump in Shepherdsville if electricity rose past 24.2¢/kWh from 14.39¢, or gas fell under $8.45 per Mcf from $14.23. A useful quote test for Shepherdsville: the heat pump is worth it within a decade if it costs less than $1,920 more than replacing the furnace and AC, and within 7 years if the gap is under $1,344.
The other scenario: no gas furnace to begin with
Gas isn't universal in Shepherdsville, many houses run on electric heat already. Against electric-resistance heat, baseboard or an electric furnace, both 100% efficient but still just resistance, the case for switching gets stronger here. Switching saves about $882 a year here, a heat pump moving heat rather than generating it needs far less electricity than resistance coils, so the extra $10,000 spent up front comes back in about 11.3 years.
Shepherdsville against the rest of the country
Ranked against the other 3206 cities covered, Shepherdsville comes in at 1852 for heating severity, 1 would be the coldest place in the dataset, and 2409 by population, where 1 is largest. That's the middle third for winter severity among the cities covered here.
What to do with this number in Shepherdsville
Shepherdsville, Kentucky is home to about 14,837 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 Shepherdsville, nothing is lost by holding off until the current equipment genuinely fails.
Line up a few local HVAC quotes before you decide.
More on how this number was built
Every constant behind this page, the 2.85 seasonal COP, the degree-day corrections, the equipment costs, is documented in the methodology guide. Shepherdsville's 6.1°F design temperature is below the 25°F line, which is why a cold-climate unit is the right call here, see what that changes in the cold-climate unit guide.