Should Lewisburg switch to a heat pump?
Lewisburg technically pencils out, but only past the point the equipment would need replacing anyway. $3,500 is what Lewisburg 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. Lewisburg's residents would see roughly $95 a year back in running costs, putting the payback around 36.6 years. That's a technicality, not a recommendation, for anyone actually living in Lewisburg.
Lewisburg's weather, in the numbers that matter
Degree days tell the story here: Lewisburg racks up 3098 heating degree days each year (base 65°F), and summers are hot enough that cooling matters as much as heating, with 1615 cooling degree days on the cooling side. Sizing runs off the design temperature, not the average day: 5°F here (record low -13°F), which works out to a seasonal COP of 2.82 for the cold-climate class of unit this climate calls for. Below the 25°F line where a standard machine starts leaning on resistance backup, Lewisburg sits firmly in cold-climate territory, so that's the class of unit priced here. These numbers come from ELLINGTON, the closest NOAA station, 3.9 miles out.
Lewisburg's running-cost comparison, in dollars
A 2000-square-foot house here would pull roughly 2,782 heating kilowatt-hours annually on top of cooling, totalling about $577 a year on electricity. Lewisburg's gas rate of 11.84 per Mcf, applied to the 32 Mcf a year the furnace burns, puts its running cost near $672 a year, against 13.87¢ per kWh for electricity. Looked at as a full purchase rather than an incremental one, payback here is roughly 141.4 years, leaving the 15-year total $2,068 behind.
Electric resistance heat in Lewisburg, compared
Not every home in Lewisburg 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 $802 a year comes back this way, enough that the 10-year payback clears the $8,000 premium comfortably within the equipment's life.
How Lewisburg compares nationally
Among 3206 cities, Lewisburg's winter puts it at rank 1879 for severity, while its size puts it at rank 2591 for population — 1 in both cases being the extreme. That's the middle third for winter severity among the cities covered here.
What to do with this number in Lewisburg
Lewisburg, Tennessee is home to about 13,473 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 Lewisburg, 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
Nothing above is a black box: the methodology guide shows the full arithmetic behind Lewisburg's 2.82 seasonal COP and payback figure. At a 5°F design temperature, Lewisburg sits in cold-climate territory; the guide to that class of unit explains why.