Is a heat pump worth it in Mandeville?

In Mandeville, a heat pump pays for itself within a reasonable window. Against a like-for-like gas furnace and AC swap, going electric costs $1,000 more up front here (already netting out a $2,000 tax credit). That premium is recovered through $272 of lower running costs every year, landing the payback clock at roughly 3.7 years. The window here is reasonable, and it's specific to what Mandeville actually pays for power and gas.

How cold Mandeville actually gets

Degree days tell the story here: Mandeville racks up 1172 heating degree days each year (base 65°F), and summers are severe enough that cooling can dominate the annual bill, with 3201 cooling degree days on the cooling side. 28°F is the figure equipment gets sized against here — the 99th-percentile cold snap, not an average day — with a record low of 18°F on file. Worked through the model, that's a seasonal COP of 3.03 on the standard unit fit for this climate. Mandeville'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, SLIDELL AIRPORT, 16.8 miles from Mandeville.

The month-to-month numbers for Mandeville

A 2000-square-foot house here would pull roughly 979 heating kilowatt-hours annually on top of cooling, totalling about $501 a year on electricity. Mandeville's gas rate of 17.38 per Mcf, applied to the 12 Mcf a year the furnace burns, puts its running cost near $773 a year, against 13.52¢ per kWh for electricity. Looked at as a full purchase rather than an incremental one, payback here is roughly 40.5 years, leaving the 15-year total $3,074 ahead.

The other scenario: no gas furnace to begin with

Not every home in Mandeville has gas service. Against electric-resistance heat — baseboard or an electric furnace, both 100% efficient but still just resistance — the case for switching gets stronger here. About $461 a year comes back this way, enough that the 11.9-year payback clears the $5,500 premium comfortably within the equipment's life.

Where Mandeville ranks in this dataset

Among 3206 cities, Mandeville's winter puts it at rank 2805 for severity, while its size puts it at rank 2658 for population — 1 in both cases being the extreme. 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 Mandeville

Mandeville, Louisiana is home to about 12,973 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, Mandeville is a place worth lining up quotes ahead of a breakdown, not waiting for one.

Get quotes from local HVAC contractors before deciding.

Where Mandeville's figure comes from

Nothing above is a black box: the methodology guide shows the full arithmetic behind Mandeville's 3.03 seasonal COP and payback figure. The $2,000 federal credit baked into Mandeville's number is explained, with the before-and-after math, in the tax credit guide.