Heat Pump Payback in Novi, MI
Novi, MI: the heat pump payback math
Here in Novi, the honest answer is that a heat pump raises your annual running cost. Against a like-for-like gas furnace and AC swap, going electric costs $5,500 more up front here. Running costs here land $360 a year higher than the furnace it replaces, so that premium is never recovered. That's Novi's own climate and rates talking, not a hedge or a caveat.
Compare against another city
Landed on Novi by mistake, or want to compare it against somewhere else? Search the other 3206 cities below.
How cold Novi actually gets
Degree days tell the story here: Novi racks up 5409 heating degree days each year (base 65°F), and summers add a moderate cooling load, with 739 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 1°F, and the coldest daily reading in the 2024 station record was -5.8°F. That puts the seasonal coefficient of performance at 2.72 for the recommended cold-climate unit. A cold-climate unit is the right call in Novi, below 25°F design temperature, a standard heat pump leans hard on electric-resistance backup, which erases most of the savings. Source: NOAA station Oakland Co. Intnl Airport, 13.4 miles from Novi, the closest one on record.
What it actually costs to run, year to year
Modelled on a typical 2000-square-foot house, the heat pump draws about 5,035 kWh a year to keep it warm, plus cooling, for a combined electric bill near $1,174 a year. That compares with roughly 56 Mcf a year of gas at Novi's $10.92 per-Mcf rate, about $814 a year with the old AC included, against a local electricity rate of 20.72¢/kWh. Because the heat pump costs more to run here, the gap only widens with time: $10,904 behind after 15 years compared with replacing the furnace and AC like-for-like.
The break-even point in Novi
For the verdict in Novi to flip, electricity would need to drop to about 13.1¢/kWh from 20.72¢, or gas climb past $17.32 per Mcf from $10.92. A utility offering a lower heat pump rate can change this. Until then, no quote price makes a heat pump pay back against gas in Novi; the case for one here rests on comfort, cooling, or replacing electric heat instead.
Electric resistance heat in Novi, compared
Not every home in Novi 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. The saving here runs about $1,862 a year, which recovers the extra $10,000 spent going electric in roughly 5.4 years.
How Novi compares nationally
Novi lands at position 422 out of 3206 cities on heating severity (coldest is 1), and 575 out of 3206 by population size (biggest is 1). 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 Novi
Novi, Michigan is home to about 67,675 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 Novi, nothing is lost by holding off until the current equipment genuinely fails.
Ask a local HVAC contractor for a quote before committing either way.
More on how this number was built
The methodology guide walks through exactly how Novi's 2.72 seasonal COP and the rest of this page's numbers get built. At a 1°F design temperature, Novi sits in cold-climate territory; the guide to that class of unit explains why.