Is a heat pump worth it in Casselberry?
In Casselberry, 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). Lower bills claw that back: about $323 saved annually, for a payback of roughly 3.1 years. That's a real payback, built from Casselberry's own climate and utility rates, not a national guess.
The climate behind Casselberry's payback figure
Degree days tell the story here: Casselberry racks up 441 heating degree days each year (base 65°F), and summers are severe enough that cooling can dominate the annual bill, with 3735 cooling degree days on the cooling side. Sizing runs off the design temperature, not the average day: 42.1°F here (record low 37°F), which works out to a seasonal COP of 3.45 for the standard class of unit this climate calls for. A standard ducted system is enough here; Casselberry's design temperature doesn't justify the cold-climate premium. These numbers come from EXECUTIVE AIRPORT, the closest NOAA station, 8.1 miles out.
The month-to-month numbers for Casselberry
A 2000-square-foot house here would pull roughly 324 heating kilowatt-hours annually on top of cooling, totalling about $541 a year on electricity. Casselberry's gas rate of 25.48 per Mcf, applied to the 5 Mcf a year the furnace burns, puts its running cost near $864 a year, against 15.43¢ per kWh for electricity. Buy it outright, not incrementally, and payback stretches to 34.1 years; over 15 years the net position sits $3,839 ahead.
Electric resistance heat in Casselberry, compared
Gas isn't universal in Casselberry — many houses run on electric heat already. Compared with baseboard or electric-furnace resistance heat, the numbers shift in the heat pump’s favor. Switching saves about $378 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 14.6 years.
Where Casselberry ranks in this dataset
Ranked against the other 3206 cities covered, Casselberry comes in at 3068 for heating severity — 1 would be the coldest place in the dataset — and 1294 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 Casselberry
About 31,650 people live in Casselberry, 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 3.45 seasonal COP, the degree-day corrections, the equipment costs — is documented in the methodology guide. See what Casselberry's figure looks like without the $2,000 federal credit in the guide to how that credit moves the payback window.