Heat pump vs. gas furnace in Clarksville, TN
In Clarksville, the extra upfront cost technically comes back, just not before the equipment wears out. 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 $112 of lower running costs every year, landing the payback clock at roughly 31.4 years. That's a technicality, not a recommendation, for anyone actually living in Clarksville.
Clarksville's weather, in the numbers that matter
Degree days tell the story here: Clarksville racks up 2988 heating degree days each year (base 65°F), and summers are hot enough that cooling matters as much as heating, with 1728 cooling degree days on the cooling side. 8.1°F is the figure equipment gets sized against here — the 99th-percentile cold snap, not an average day — with a record low of 3°F on file. Worked through the model, that's a seasonal COP of 2.89 on the cold-climate unit fit for this climate. Clarksville 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, OUTLAW FIELD AIRPORT, 5.7 miles from Clarksville.
The month-to-month numbers for Clarksville
Electricity use for heating alone comes out to about 2,618 kWh a year on the 2000-square-foot reference house; folding in cooling puts the electric bill near $567 a year. Clarksville's gas rate of 11.84 per Mcf, applied to the 31 Mcf a year the furnace burns, puts its running cost near $679 a year, against 13.87¢ per kWh for electricity. Looked at as a full purchase rather than an incremental one, payback here is roughly 121 years, leaving the 15-year total $1,826 behind.
If your home heats with electric baseboard instead of gas
Not every home in Clarksville 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. Switching saves about $793 a year here — a heat pump moving heat rather than generating it needs far less electricity than resistance coils — so the extra $8,000 spent up front comes back in about 10.1 years.
Clarksville against the rest of the country
Ranked against the other 3206 cities covered, Clarksville comes in at 1941 for heating severity — 1 would be the coldest place in the dataset — and 142 by population, where 1 is largest. That's the middle third for winter severity among the cities covered here.
Deciding what's next in Clarksville, TN
Clarksville, Tennessee is home to about 185,690 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 Clarksville, nothing is lost by holding off until the current equipment genuinely fails.
Get quotes from local HVAC contractors before deciding.
Where Clarksville's figure comes from
Every constant behind this page — the 2.89 seasonal COP, the degree-day corrections, the equipment costs — is documented in the methodology guide. Clarksville's 8.1°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.