Heat Pump Payback in Indianapolis, IN
Is a heat pump worth it in Indianapolis?
Indianapolis is a place where a heat pump genuinely costs more to operate than the alternative. $5,500 is what Indianapolis would pay extra to go electric rather than replace the furnace and AC with the same again. Unfortunately the electric bill outweighs the gas bill it replaces by about $80 a year here, so the extra spend stays unrecovered. That's Indianapolis's own climate and rates talking, not a hedge or a caveat.
Compare against another city
This runs the same numbers for 3206 US cities, not just Indianapolis. Look one up here.
How cold Indianapolis actually gets
Indianapolis has a real but manageable winter, 4285 heating degree days a year against a 65°F base, and summers are hot enough that cooling matters as much as heating, at 1278 cooling degree days. Sizing runs off the design temperature, not the average day: -0.9°F here (coldest 2024 reading -6°F), which works out to a seasonal COP of 2.68 for the cold-climate class of unit this climate calls for. Indianapolis 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 Indianapolis International Ai, 8.1 miles from Indianapolis, the closest one on record.
Indianapolis's running-cost comparison, in dollars
Electricity use for heating alone comes out to about 4,049 kWh a year on the 2000-square-foot reference house; folding in cooling puts the electric bill near $875 a year. Indianapolis's gas rate of $11.49 per Mcf, applied to the 45 Mcf a year the furnace burns, puts the current furnace-and-AC running cost near $795 a year, against 17.03¢ per kWh for electricity. Because the heat pump costs more to run here, the gap only widens with time: $6,703 behind after 15 years compared with replacing the furnace and AC like-for-like.
The break-even point in Indianapolis
For the verdict in Indianapolis to flip, electricity would need to drop to about 14.7¢/kWh from 17.03¢, or gas climb past $13.29 per Mcf from $11.49. 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 Indianapolis; the case for one here rests on comfort, cooling, or replacing electric heat instead.
Electric resistance heat in Indianapolis, compared
Gas isn't universal in Indianapolis, many houses run on electric heat already. Compared with baseboard or electric-furnace resistance heat, the numbers shift in the heat pump’s favor. About $1,255 a year comes back this way, enough that the 8-year payback clears the $10,000 premium comfortably within the equipment's life.
How Indianapolis compares nationally
Ranked against the other 3206 cities covered, Indianapolis comes in at 1344 for heating severity, 1 would be the coldest place in the dataset, and 16 by population, where 1 is largest. That's the middle third for winter severity among the cities covered here.
Next step if you live in Indianapolis
Indianapolis, Indiana is home to about 891,484 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 Indianapolis, 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 Indianapolis's figure comes from
The methodology guide walks through exactly how Indianapolis's 2.68 seasonal COP and the rest of this page's numbers get built. Indianapolis's -0.9°F design temperature falls on the cold side of the 25°F cutoff the cold-climate unit guide walks through.