Is a heat pump worth it in North Miami Beach?
In North Miami Beach, a heat pump is the cheaper choice, and not by a little. 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). Lower bills claw that back: about $359 saved annually, for a payback of roughly 2.8 years. Nothing about that conclusion is generic — it's built entirely from North Miami Beach's own numbers.
Why North Miami Beach's climate drives this number
North Miami Beach barely has a winter to speak of — 54 heating degree days a year against a 65°F base — and summers are severe enough that cooling can dominate the annual bill, at 5123 cooling degree days. The 99% winter design temperature here — the cold snap equipment must be sized for, not the seasonal average — is 50°F, against a record low of 48.9°F. That puts the seasonal coefficient of performance at 3.69 for the recommended standard unit. A standard ducted system is enough here; North Miami Beach's design temperature doesn't justify the cold-climate premium. Climate figures trace to the nearest NOAA station, NORTH PERRY AIRPORT, 6.7 miles from North Miami Beach.
What it actually costs to run, year to year
Electricity use for heating alone comes out to about 37 kWh a year on the 2000-square-foot reference house; folding in cooling puts the electric bill near $680 a year. North Miami Beach's gas rate of 25.48 per Mcf, applied to the 1 Mcf a year the furnace burns, puts its running cost near $1,039 a year, against 15.43¢ per kWh for electricity. Priced as a standalone purchase rather than against a like-for-like replacement, equipment payback runs about 30.6 years, for a 15-year net position $4,386 ahead.
If your home heats with electric baseboard instead of gas
Plenty of homes in North Miami Beach 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. The saving here runs about $366 a year, which recovers the extra $5,500 spent going electric in roughly 15 years.
How North Miami Beach compares nationally
North Miami Beach lands at position 3183 out of 3206 cities on heating severity (coldest is 1), and 901 out of 3206 by population size (biggest is 1). 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 North Miami Beach
About 45,655 people live in North Miami Beach, Florida, and every number on this page is what a contractor would actually work from when quoting a system here — the point isn't to replace that quote, it's to tell you whether to bother asking for one. Here, it's worth getting quotes before your current system fails, not after.
Get quotes from local HVAC contractors before deciding.
Reading further on this page's numbers
Every constant behind this page — the 3.69 seasonal COP, the degree-day corrections, the equipment costs — is documented in the methodology guide. See what North Miami Beach's figure looks like without the $2,000 federal credit in the guide to how that credit moves the payback window.