Repair or replace
how long should an ac unit last in florida
We could not find a Florida-specific service-life figure from a primary source, so we do not publish one. What is true: Central Florida runs about seven cooling degree days for every heating degree day, so a system here does in a decade what a northern one does in fifteen years, and the nameplate manufacture date — not the house — tells you its age.
Why we will not give a number
Duty cycle, and what actually ends a system
Plenty of HVAC pages publish a Florida lifespan to one decimal place. Ask them where it came from. We looked and did not find one worth citing.
NOAA’s 1991–2020 normals for the two nearest first-order stations put Central Florida at 3,452 to 3,694 annual cooling degree days against 468 to 525 heating degree days — about seven units of cooling for every one of heating.
That ratio is the reason the honest answer is shorter here than the national guides’ figures. The equipment is never fully idle for most of the year; drain lines, coils and capacitors see far more hours than the same box would in Georgia. What ends a system, roughly in order: compressor failure, at a researched $1,000 to $3,000 or more; an evaporator coil leak at $700 to $2,500 or more; and accumulated inefficiency, where it still cools but costs more each year and stops keeping up on the worst afternoons.
What to use instead
Build year plus nameplate
What we can give you is two facts. The first is the year your subdivision was built, from the county parcel file, which tells you the design era and how many replacement rounds the street has been through. The second is the manufacture date on your own nameplate, which is the only real answer to how old the equipment is. Between them they answer the question you are actually asking, which is whether the next repair is worth making.
| Subdivision | Parcels | Median year built | Age in 2026 | Middle half built | Window | Built 1970–89 |
|---|---|---|---|---|---|---|
| Winter Springs Unit 4 | 379 | 1977 | 49 | 1976–1978 | 2 yr | 98.4% |
| Wildwood | 291 | 1983 | 43 | 1980–1984 | 4 yr | 100.0% |
| Wedgewood Tennis Villas | 233 | 1984 | 42 | 1982–1985 | 3 yr | 98.7% |
| North Orlando Ranches Sec 02A | 191 | 1980 | 46 | 1978–1983 | 5 yr | 89.0% |
| Tuskawilla Crossings Phase 2 | 189 | 2020 | 6 | 2020–2021 | 1 yr | 0.0% |
| North Orlando Townsite 4Th Add Replat | 183 | 1971 | 55 | 1971–1972 | 1 yr | 100.0% |
| Tuskawilla Crossings Phase 1 | 182 | 2019 | 7 | 2019–2020 | 1 yr | 0.0% |
| Jesups Landing | 171 | 2015 | 11 | 2015–2016 | 1 yr | 0.0% |
Source: Seminole County Property Appraiser CAMA extract, files dated 5 September 2026. Improved residential parcels (single-family, townhome and condominium; DOR codes 01xx and 04xx) in tax districts W1 and W2. The full twenty, with the chart, are on the repair-or-replace page.
A 1977 Winter Springs Unit 4 house is on its third or fourth system. A 2005 Heritage Park townhome is very likely on its original R-410A system, now twenty years old. Neither fact is a lifespan; both are more useful than one.
What genuinely adds years here: correct sizing so it runs long cycles rather than short ones; a clear condensate path; a duct system the blower can actually breathe through; and a service schedule that matches a nine-month season. How often, answered. What does not: replacing a capacitor every eighteen months. If it keeps failing, something is cooking it.
Sources
Where the facts on this page come from
Every figure above is either a primary-source document or a named third-party cost guide, and all of it was checked in September 2026. Fee schedules, rebate amounts and market prices change without notice — if you are about to spend money on one of these numbers, open the source and check it.