Central, LA: the heat pump payback math

In Central, a heat pump pays for itself within a reasonable window. Swap a failed furnace and AC for a heat pump rather than buying like-for-like, and the extra cost here runs $1,000 after a $2,000 federal tax credit. Lower bills claw that back: about $284 saved annually, for a payback of roughly 3.5 years. The window here is reasonable, and it's specific to what Central actually pays for power and gas.

Central's weather, in the numbers that matter

Central barely has a winter to speak of — 1054 heating degree days a year against a 65°F base — and summers are severe enough that cooling can dominate the annual bill, at 3529 cooling degree days. The 99% winter design temperature here — the cold snap equipment must be sized for, not the seasonal average — is 28.9°F, against a record low of 17.1°F. That puts the seasonal coefficient of performance at 3.06 for the recommended standard unit. Central's winters don't get cold enough to need the cold-climate premium — a standard unit holds up fine. Climate figures trace to the nearest NOAA station, BATON ROUGE METRO RYAN FIELD, 6.8 miles from Central.

What it actually costs to run, year to year

Electricity use for heating alone comes out to about 872 kWh a year on the 2000-square-foot reference house; folding in cooling puts the electric bill near $525 a year. Central's gas rate of 17.38 per Mcf, applied to the 11 Mcf a year the furnace burns, puts its running cost near $809 a year, against 13.52¢ per kWh for electricity. Looked at as a full purchase rather than an incremental one, payback here is roughly 38.7 years, leaving the 15-year total $3,266 ahead.

The other scenario: no gas furnace to begin with

Not every home in Central has gas service. Compared with baseboard or electric-furnace resistance heat, the numbers shift in the heat pump’s favor. The saving here runs about $454 a year, which recovers the extra $5,500 spent going electric in roughly 12.1 years.

How Central compares nationally

Ranked against the other 3206 cities covered, Central comes in at 2869 for heating severity — 1 would be the coldest place in the dataset — and 1353 by population, where 1 is largest. That's the mildest third of cities covered, where utility rates carry more of the answer than climate does.

What to do with this number in Central

Central, Louisiana is home to about 30,161 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. Given the math above, Central is a place worth lining up quotes ahead of a breakdown, not waiting for one.

Line up a few local HVAC quotes before you decide.

Reading further on this page's numbers

The methodology guide walks through exactly how Central's 3.06 seasonal COP and the rest of this page's numbers get built. The $2,000 federal credit baked into Central's number is explained, with the before-and-after math, in the tax credit guide.