Heat Pump Payback in Murray, KY
Will a heat pump pay off in Murray, KY?
Murray technically pencils out, but only past the point the equipment would need replacing anyway. $5,500 is what Murray would pay extra to go electric rather than replace the furnace and AC with the same again. That premium is recovered through $168 of lower running costs every year, landing the payback clock at roughly 32.8 years. That's a technicality, not a recommendation, for anyone actually living in Murray.
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How cold Murray actually gets
Degree days tell the story here: Murray racks up 3095 heating degree days each year (base 65°F), and summers are hot enough that cooling matters as much as heating, with 1708 cooling degree days on the cooling side. The 99% winter design temperature here, the cold snap equipment must be sized for, not the seasonal average, is 5°F, and the coldest daily reading in the 2024 station record was 3.2°F. That puts the seasonal coefficient of performance at 2.82 for the recommended cold-climate unit. Murray 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 Kyle Oakley Field Airport, 4.5 miles from Murray, the closest one on record.
Murray's running-cost comparison, in dollars
Modelled on a typical 2000-square-foot house, the heat pump draws about 2,779 kWh a year to keep it warm, plus cooling, for a combined electric bill near $609 a year. Murray's gas rate of $14.23 per Mcf, applied to the 32 Mcf a year the furnace burns, puts the current furnace-and-AC running cost near $777 a year, against 14.39¢ per kWh for electricity. 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 $2,984 behind.
How sensitive Murray's result is to prices
Gas would only overtake the heat pump in Murray if electricity rose past 22.7¢/kWh from 14.39¢, or gas fell under $9.03 per Mcf from $14.23. A useful quote test for Murray: the heat pump is worth it within a decade if it costs less than $1,680 more than replacing the furnace and AC, and within 7 years if the gap is under $1,176.
The other scenario: no gas furnace to begin with
Not every home in Murray has gas service. Against electric-resistance heat, baseboard or an electric furnace, both 100% efficient but still just resistance, the case for switching gets stronger here. About $837 a year comes back this way, enough that the 12-year payback clears the $10,000 premium comfortably within the equipment's life.
Where Murray ranks in this dataset
Ranked against the other 3206 cities covered, Murray comes in at 1883 for heating severity, 1 would be the coldest place in the dataset, and 2045 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 Murray
Murray, Kentucky is home to about 18,567 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 Murray, 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
The methodology guide walks through exactly how Murray's 2.82 seasonal COP and the rest of this page's numbers get built. At a 5°F design temperature, Murray sits in cold-climate territory; the guide to that class of unit explains why.