Heat Pump Payback in West Palm Beach, FL
Should West Palm Beach switch to a heat pump?
This one's marginal in West Palm Beach: it only clears if you stay long enough. $3,000 is what West Palm Beach would pay extra to go electric rather than replace the furnace and AC with the same again. That premium is recovered through $334 of lower running costs every year, landing the payback clock at roughly 9 years. It's a genuine toss-up here, West Palm Beach's numbers don't point clearly either way.
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This runs the same numbers for 3206 US cities, not just West Palm Beach. Look one up here.
How cold West Palm Beach actually gets
Degree days tell the story here: West Palm Beach racks up 106 heating degree days each year (base 65°F), and summers are severe enough that cooling can dominate the annual bill, with 4633 cooling degree days on the cooling side. Sizing runs off the design temperature, not the average day: 48°F here (coldest 2024 reading 46.9°F), which works out to a seasonal COP of 3.63 for the standard class of unit this climate calls for. West Palm Beach's winters don't get cold enough to need the cold-climate premium, a standard unit holds up fine. Source: NOAA station Palm Beach International Airp, 4.5 miles from West Palm Beach, the closest one on record.
West Palm Beach's running-cost comparison, in dollars
On a typical 2000-square-foot house, heating needs here are close to nil, so the heat pump's electric bill, near $621 a year, is almost entirely air conditioning. Heating barely registers here, a gas furnace would burn about 1 Mcf a year at $25.48 per Mcf, so nearly all of the $955 a year the existing setup costs to run is the old air conditioner. At 15.43¢/kWh, the saving in West Palm Beach comes from the heat pump being a more efficient air conditioner, not from heating. 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 $2,005 ahead.
What would change West Palm Beach's answer
In West Palm Beach 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 West Palm Beach: the heat pump is worth it within a decade if it costs less than $3,340 more than replacing the furnace and AC, and within 7 years if the gap is under $2,338.
If your home heats with electric baseboard instead of gas
Plenty of homes in West Palm 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 gap still doesn't close: the $7,500 incremental cost outlasts the 15-year equipment life here even against resistance heat.
Where West Palm Beach ranks in this dataset
West Palm Beach lands at position 3141 out of 3206 cities on heating severity (coldest is 1), and 228 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 West Palm Beach
West Palm Beach, Florida is home to about 127,744 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 West Palm Beach, nothing is lost by holding off until the current equipment genuinely fails.
Ask a local HVAC contractor for a quote before committing either way.
More on how this number was built
Every constant behind this page, the 3.63 seasonal COP, the degree-day corrections, the equipment costs, is documented in the methodology guide. Homes in West Palm Beach without gas service should read the electric-resistance comparison instead, the numbers there differ from the gas case above.