Lawrence, IN: the heat pump payback math

Here in Lawrence, 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 $3,500 more up front here (already netting out a $2,000 tax credit). The heat pump would cost about $59 more a year to run than the furnace it replaces — a premium with no payback. That's Lawrence's own climate and rates talking, not a hedge or a caveat.

How cold Lawrence actually gets

Degree days tell the story here: Lawrence racks up 4073 heating degree days each year (base 65°F), and summers are hot enough that cooling matters as much as heating, with 1379 cooling degree days on the cooling side. 0°F is the figure equipment gets sized against here — the 99th-percentile cold snap, not an average day — with a record low of -4°F on file. Worked through the model, that's a seasonal COP of 2.7 on the cold-climate unit fit for this climate. Below the 25°F line where a standard machine starts leaning on resistance backup, Lawrence sits firmly in cold-climate territory, so that's the class of unit priced here. Climate figures trace to the nearest NOAA station, EAGLE CREEK AIRPARK ARPT, 16.5 miles from Lawrence.

The month-to-month numbers for Lawrence

Electricity use for heating alone comes out to about 3,820 kWh a year on the 2000-square-foot reference house; folding in cooling puts the electric bill near $851 a year. The gas furnace it replaces burns roughly 42 Mcf a year at 11.49 per Mcf here, for a running cost near $792 a year (electricity here runs 17.03¢/kWh). Buy it outright, not incrementally, and payback stretches to beyond the 15-year equipment life; over 15 years the net position sits $4,385 behind.

The other scenario: no gas furnace to begin with

Plenty of homes in Lawrence heat with electricity alone, no gas line involved. Swap the comparison to resistance heat instead of gas, and Lawrence's answer improves. Switching saves about $1,210 a year here — a heat pump moving heat rather than generating it needs far less electricity than resistance coils — so the extra $8,000 spent up front comes back in about 6.6 years.

Lawrence against the rest of the country

Lawrence lands at position 1475 out of 3206 cities on heating severity (coldest is 1), and 823 out of 3206 by population size (biggest is 1). That's the middle third for winter severity among the cities covered here.

Next step for 49,817 people in Lawrence

Lawrence, Indiana is home to about 49,817 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 Lawrence, 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 Lawrence's figure comes from

Nothing above is a black box: the methodology guide shows the full arithmetic behind Lawrence's 2.7 seasonal COP and payback figure. At a 0°F design temperature, Lawrence sits in cold-climate territory; the guide to that class of unit explains why.