Is a heat pump worth it in Miami Springs?
In Miami Springs, a heat pump is the cheaper choice, and not by a little. 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. That premium is recovered through $339 of lower running costs every year, landing the payback clock at roughly 3 years. That verdict holds specifically for Miami Springs's own climate and rates, not a national average.
How cold Miami Springs actually gets
41 heating degree days pile up here every year, so Miami Springs barely has a winter to speak of; the cooling side runs to 4858 cooling degree days, where summers are severe enough that cooling can dominate the annual bill. Sizing runs off the design temperature, not the average day: 52°F here (record low 52°F), which works out to a seasonal COP of 3.75 for the standard class of unit this climate calls for. Miami Springs's winters don't get cold enough to need the cold-climate premium — a standard unit holds up fine. Source: NOAA station MIAMI INTERNATIONAL AIRPORT, 2.8 miles from Miami Springs — the closest one on record.
The month-to-month numbers for Miami Springs
Electricity use for heating alone comes out to about 28 kWh a year on the 2000-square-foot reference house; folding in cooling puts the electric bill near $643 a year. That compares with roughly 0 Mcf a year of gas at Miami Springs's 25.48 per-Mcf rate — about $982 a year — against a local electricity rate of 15.43¢/kWh. Looked at as a full purchase rather than an incremental one, payback here is roughly 32.5 years, leaving the 15-year total $4,084 ahead.
Electric resistance heat in Miami Springs, compared
Plenty of homes in Miami Springs heat with electricity alone, no gas line involved. Against electric-resistance heat — baseboard or an electric furnace, both 100% efficient but still just resistance — the case for switching gets stronger here. Switching saves about $344 a year here — a heat pump moving heat rather than generating it needs far less electricity than resistance coils — so the extra $5,500 spent up front comes back in about 16 years.
Miami Springs against the rest of the country
Ranked against the other 3206 cities covered, Miami Springs comes in at 3194 for heating severity — 1 would be the coldest place in the dataset — and 2530 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 Miami Springs
Miami Springs, Florida is home to about 13,901 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, Miami Springs is a place worth lining up quotes ahead of a breakdown, not waiting for one.
Get quotes from local HVAC contractors before deciding.
Reading further on this page's numbers
The methodology guide walks through exactly how Miami Springs's 3.75 seasonal COP and the rest of this page's numbers get built. The $2,000 federal credit baked into Miami Springs's number is explained, with the before-and-after math, in the tax credit guide.