Should Fairmont switch to a heat pump?

Fairmont is a place where a heat pump genuinely costs more to operate than the alternative. $3,500 is what Fairmont 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. Running costs here land $272 a year HIGHER than the furnace it replaces, so that premium is never recovered. There's no spin on that: Fairmont's numbers say wait.

The climate behind Fairmont's payback figure

Fairmont has a cold winter that leans hard on heating equipment — 6295 heating degree days a year against a 65°F base — and summers add a moderate cooling load, at 641 cooling degree days. -11.9°F is the figure equipment gets sized against here — the 99th-percentile cold snap, not an average day — with a record low of -15°F on file. Worked through the model, that's a seasonal COP of 2.41 on the cold-climate unit fit for this climate. Fairmont 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 FAIRMONT MUNICIPAL AIRPORT, 2.4 miles from Fairmont — the closest one on record.

The month-to-month numbers for Fairmont

Modelled on a typical 2000-square-foot house, the heat pump draws about 6,614 kWh a year to keep it warm, plus cooling, for a combined electric bill near $1,122 a year. That compares with roughly 66 Mcf a year of gas at Fairmont's 10.98 per-Mcf rate — about $850 a year — against a local electricity rate of 15.67¢/kWh. Priced as a standalone purchase rather than against a like-for-like replacement, equipment payback runs past the 15-year equipment life, for a 15-year net position $7,580 behind.

Electric resistance heat in Fairmont, compared

Plenty of homes in Fairmont heat with electricity alone, no gas line involved. Compared with baseboard or electric-furnace resistance heat, the numbers shift in the heat pump’s favor. Switching saves about $1,506 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 5.3 years.

Where Fairmont ranks in this dataset

Ranked against the other 3206 cities covered, Fairmont comes in at 116 for heating severity — 1 would be the coldest place in the dataset — and 3162 by population, where 1 is largest. That's the coldest third of the dataset, where climate does most of the work behind this figure.

What to do with this number in Fairmont

About 10,176 people live in Fairmont, Minnesota, and every number on this page is what a contractor would actually work from when quoting a system here — the point isn't to replace that quote, it's to tell you whether to bother asking for one. Here, there's no cost penalty to waiting until your current furnace or AC actually needs replacing.

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

Where Fairmont's figure comes from

Nothing above is a black box: the methodology guide shows the full arithmetic behind Fairmont's 2.41 seasonal COP and payback figure. At a -11.9°F design temperature, Fairmont sits in cold-climate territory; the guide to that class of unit explains why.