Heat Pump Payback in Alexandria, LA
Should Alexandria switch to a heat pump?
In Alexandria, the extra upfront cost technically comes back, just not before the equipment wears out. Swap a failed furnace and AC for a heat pump rather than buying like-for-like, and the extra cost here runs $5,500. Alexandria's residents would see roughly $281 a year back in running costs, putting the payback around 19.6 years. That's a technicality, not a recommendation, for anyone actually living in Alexandria.
Checking a different city
This runs the same numbers for 3206 US cities, not just Alexandria. Look one up here.
Alexandria's weather, in the numbers that matter
1531 heating degree days pile up here every year, so Alexandria has a mild winter by US standards; the cooling side runs to 2759 cooling degree days, where summers are severe enough that cooling can dominate the annual bill. The 99% winter design temperature here, the cold snap equipment must be sized for, not the seasonal average, is 23°F, and the coldest daily reading in the 2024 station record was 12°F. That puts the seasonal coefficient of performance at 3.25 for the recommended cold-climate unit. Mild on average, but the occasional cold snap is what sizes the equipment: at a 23°F design temperature Alexandria falls just under the 25°F line where a standard heat pump starts leaning on resistance backup, so the model prices a cold-climate unit to be safe. These numbers come from Alexandria International Airport, the closest NOAA station, 6 miles out.
What it actually costs to run, year to year
Electricity use for heating alone comes out to about 1,193 kWh a year on the 2000-square-foot reference house; folding in cooling puts the electric bill near $479 a year. That compares with roughly 16 Mcf a year of gas at Alexandria's $17.38 per-Mcf rate, about $761 a year with the old AC included, against a local electricity rate of 13.52¢/kWh. If the current system still worked and you replaced it anyway, the full cost would take longer than the 15-year equipment life to earn back; against buying a new furnace and AC regardless, the 15-year total lands $1,281 behind.
The break-even point in Alexandria
In Alexandria the cooling savings outweigh the extra electricity for heating, so no plausible change in the electricity rate would make the old furnace and AC cheaper to run. A useful quote test for Alexandria: the heat pump is worth it within a decade if it costs less than $2,810 more than replacing the furnace and AC, and within 7 years if the gap is under $1,967.
The other scenario: no gas furnace to begin with
Gas isn't universal in Alexandria, many houses run on electric heat already. Swap the comparison to resistance heat instead of gas, and Alexandria's answer improves. The gap still doesn't close: the $10,000 incremental cost outlasts the 15-year equipment life here even against resistance heat.
How Alexandria compares nationally
Ranked against the other 3206 cities covered, Alexandria comes in at 2674 for heating severity, 1 would be the coldest place in the dataset, and 951 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.
Deciding what's next in Alexandria, LA
Alexandria, Louisiana is home to about 43,133 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 Alexandria, nothing is lost by holding off until the current equipment genuinely fails.
Line up a few local HVAC quotes before you decide.
Where Alexandria's figure comes from
Nothing above is a black box: the methodology guide shows the full arithmetic behind Alexandria's 3.25 seasonal COP and payback figure. Alexandria's 23°F design temperature falls on the cold side of the 25°F cutoff the cold-climate unit guide walks through.