Heat Pump Payback in Auburn Hills, MI

Will a heat pump pay off in Auburn Hills, MI?

Here in Auburn Hills, 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 Auburn Hills's own climate and rates talking, not a hedge or a caveat.

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How cold Auburn Hills actually gets

Degree days tell the story here: Auburn Hills 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. Sizing runs off the design temperature, not the average day: 1°F here (coldest 2024 reading -5.8°F), which works out to a seasonal COP of 2.72 for the cold-climate class of unit this climate calls for. Auburn Hills 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 Oakland Co. Intnl Airport, 8.9 miles from Auburn Hills, the closest one on record.

The yearly running costs in Auburn Hills

Electricity use for heating alone comes out to about 5,035 kWh a year on the 2000-square-foot reference house; folding in cooling puts the electric bill near $1,174 a year. The gas furnace it replaces burns roughly 56 Mcf a year at $10.92 per Mcf here, for a running cost near $814 a year including the old AC (electricity here runs 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 Auburn Hills

For the verdict in Auburn Hills 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 Auburn Hills; the case for one here rests on comfort, cooling, or replacing electric heat instead.

The other scenario: no gas furnace to begin with

Not every home in Auburn Hills has gas service. Swap the comparison to resistance heat instead of gas, and Auburn Hills's answer improves. Switching saves about $1,862 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 5.4 years.

Auburn Hills against the rest of the country

Among 3206 cities, Auburn Hills's winter puts it at rank 424 for severity, while its size puts it at rank 1538 for population, 1 in both cases being the extreme. That's the coldest third of the dataset, where climate does most of the work behind this figure.

Next step if you live in Auburn Hills

Auburn Hills, Michigan is home to about 26,047 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 Auburn Hills, nothing is lost by holding off until the current equipment genuinely fails.

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

Where Auburn Hills's figure comes from

Nothing above is a black box: the methodology guide shows the full arithmetic behind Auburn Hills's 2.72 seasonal COP and payback figure. At a 1°F design temperature, Auburn Hills sits in cold-climate territory; the guide to that class of unit explains why.