Heat Pump Payback in Maryland Heights, MO
Maryland Heights, MO: the heat pump payback math
Maryland Heights technically pencils out, but only past the point the equipment would need replacing anyway. $5,500 is what Maryland Heights would pay extra to go electric rather than replace the furnace and AC with the same again. Maryland Heights's residents would see roughly $242 a year back in running costs, putting the payback around 22.8 years. Maryland Heights's own numbers say this pencils out only in theory, not in practice.
Compare against another city
Landed on Maryland Heights by mistake, or want to compare it against somewhere else? Search the other 3206 cities below.
Why Maryland Heights's climate drives this number
Degree days tell the story here: Maryland Heights racks up 3396 heating degree days each year (base 65°F), and summers are hot enough that cooling matters as much as heating, with 2013 cooling degree days on the cooling side. Sizing runs off the design temperature, not the average day: 1.9°F here (coldest 2024 reading -7.1°F), which works out to a seasonal COP of 2.75 for the cold-climate class of unit this climate calls for. Maryland Heights 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 Lambert-St Louis Internationa, 5.8 miles from Maryland Heights, the closest one on record.
What it actually costs to run, year to year
Electricity use for heating alone comes out to about 3,127 kWh a year on the 2000-square-foot reference house; folding in cooling puts the electric bill near $621 a year. That compares with roughly 35 Mcf a year of gas at Maryland Heights's $14.94 per-Mcf rate, about $863 a year with the old AC included, against a local electricity rate of 12.83¢/kWh. If the current system still worked and you replaced it anyway, the full cost would take longer than the 15-year equipment life to earn back; against buying a new furnace and AC regardless, the 15-year total lands $1,874 behind.
What would change Maryland Heights's answer
This result holds unless electricity climbs above 23.6¢/kWh (it is 12.83¢ now) or gas drops below $8.11 per Mcf (now $14.94); past either point, gas becomes the cheaper fuel in Maryland Heights. When quotes arrive, compare the heat pump price with a like-for-like furnace and AC replacement: at $242 a year saved, a difference under $1,694 pays back within 7 years here, and under $2,420 within 10.
Electric resistance heat in Maryland Heights, compared
Not every home in Maryland Heights has gas service. Compared with baseboard or electric-furnace resistance heat, the numbers shift in the heat pump’s favor. Switching saves about $817 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 12.2 years.
How Maryland Heights compares nationally
Ranked against the other 3206 cities covered, Maryland Heights comes in at 1797 for heating severity, 1 would be the coldest place in the dataset, and 1447 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 Maryland Heights
About 27,671 people live in Maryland Heights, Missouri, 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.
More on how this number was built
Nothing above is a black box: the methodology guide shows the full arithmetic behind Maryland Heights's 2.75 seasonal COP and payback figure. Maryland Heights's 1.9°F design temperature falls on the cold side of the 25°F cutoff the cold-climate unit guide walks through.