La Porte, IN: the heat pump payback math
La Porte is a place where a heat pump genuinely costs more to operate than the alternative. Swap a failed furnace and AC for a heat pump rather than buying like-for-like, and the extra cost here runs $3,500 after a $2,000 federal tax credit. Running costs here land $182 a year HIGHER than the furnace it replaces, so that premium is never recovered. There's no spin on that: La Porte's numbers say wait.
The climate behind La Porte's payback figure
5223 heating degree days pile up here every year, so La Porte has a cold winter that leans hard on heating equipment; the cooling side runs to 740 cooling degree days, where summers add a moderate cooling load. Sizing runs off the design temperature, not the average day: -3.6°F here (record low -11.4°F), which works out to a seasonal COP of 2.61 for the cold-climate class of unit this climate calls for. La Porte 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. Climate figures trace to the nearest NOAA station, LA PORTE MUNICIPAL AIRPORT, 2.9 miles from La Porte.
The month-to-month numbers for La Porte
A 2000-square-foot house here would pull roughly 5,067 heating kilowatt-hours annually on top of cooling, totalling about $970 a year on electricity. The gas furnace it replaces burns roughly 54 Mcf a year at 11.49 per Mcf here, for a running cost near $788 a year (electricity here runs 17.03¢/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 $6,231 behind.
The other scenario: no gas furnace to begin with
Not every home in La Porte has gas service. Compared with baseboard or electric-furnace resistance heat, the numbers shift in the heat pump’s favor. About $1,445 a year comes back this way, enough that the 5.5-year payback clears the $8,000 premium comfortably within the equipment's life.
Where La Porte ranks in this dataset
La Porte lands at position 547 out of 3206 cities on heating severity (coldest is 1), and 1755 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.
Deciding what's next in La Porte, IN
About 22,444 people live in La Porte, Indiana, 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.
Line up a few local HVAC quotes before you decide.
More on how this number was built
Every constant behind this page — the 2.61 seasonal COP, the degree-day corrections, the equipment costs — is documented in the methodology guide. La Porte's -3.6°F design temperature falls on the cold side of the 25°F cutoff the cold-climate unit guide walks through.