Miami Lakes, FL: the heat pump payback math
Miami Lakes is a clear case: a heat pump beats what you have by a wide margin. $1,000 is what Miami Lakes would pay extra to go electric rather than replace the furnace and AC with the same again, once the $2,000 federal credit is applied. That premium is recovered through $335 of lower running costs every year, landing the payback clock at roughly 3 years. That verdict holds specifically for Miami Lakes's own climate and rates, not a national average.
Miami Lakes's weather, in the numbers that matter
60 heating degree days pile up here every year, so Miami Lakes barely has a winter to speak of; the cooling side runs to 4759 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 51.1°F, against a record low of 48.9°F. That puts the seasonal coefficient of performance at 3.72 for the recommended standard unit. Miami Lakes's winters don't get cold enough to need the cold-climate premium — a standard unit holds up fine. These numbers come from OPA LOCKA AIRPORT, the closest NOAA station, 2.5 miles out.
The month-to-month numbers for Miami Lakes
Modelled on a typical 2000-square-foot house, the heat pump draws about 41 kWh a year to keep it warm, plus cooling, for a combined electric bill near $632 a year. Miami Lakes's gas rate of 25.48 per Mcf, applied to the 1 Mcf a year the furnace burns, puts its running cost near $968 a year, against 15.43¢ per kWh for electricity. Looked at as a full purchase rather than an incremental one, payback here is roughly 32.8 years, leaving the 15-year total $4,028 ahead.
If your home heats with electric baseboard instead of gas
Gas isn't universal in Miami Lakes — many houses run on electric heat already. Swap the comparison to resistance heat instead of gas, and Miami Lakes's answer improves. The saving here runs about $343 a year, which recovers the extra $5,500 spent going electric in roughly 16 years.
How Miami Lakes compares nationally
Ranked against the other 3206 cities covered, Miami Lakes comes in at 3168 for heating severity — 1 would be the coldest place in the dataset — and 1236 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.
Next step for 33,247 people in Miami Lakes
Miami Lakes, Florida is home to about 33,247 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 Lakes is a place worth lining up quotes ahead of a breakdown, not waiting for one.
Get quotes from local HVAC contractors before deciding.
More on how this number was built
Every constant behind this page — the 3.72 seasonal COP, the degree-day corrections, the equipment costs — is documented in the methodology guide. The $2,000 federal credit baked into Miami Lakes's number is explained, with the before-and-after math, in the tax credit guide.