Problems
Common AC problems in Oviedo, Florida
Nine symptoms that cover most residential air conditioning faults in Oviedo: no cooling, running but not cooling, not turning on, strange noises, a frozen coil, water leaks, short cycling, a sudden jump in the electric bill and a breaker that keeps tripping. Each with causes ranked and researched repair costs.
Start here
Pick the symptom
AC running but not cooling
Causes, checks and costAC not turning on
Causes, checks and costAC making strange noises
Causes, checks and costFrozen AC coil or iced lines
Causes, checks and costAC leaking water
Causes, checks and costAC short cycling
Causes, checks and costElectric bill suddenly high
Causes, checks and costAC breaker keeps tripping
Causes, checks and costEach page follows the same shape: the symptom, the likely causes ranked by how often they actually turn out to be the answer, what you can safely check yourself, where the licensed line is, and a researched repair cost range with its source named.
Context
The two questions behind most of these
Two questions answer more Oviedo faults than any diagnostic tool: how old is the house, and how old is the equipment. The city’s 12,263 residential parcels have a median build year of 1995, 25.0% were built 1970–89 in the strip-heat era, and 39.4% have a pool beside the house adding moisture load. The third question is which power company bills you, because a high-bill complaint on the Duke side and one on the FPL side are read against different tariffs.
- Before 19701.7%Almost nothing. Oviedo is not an old-stock city.
- 1970–198925.0%The strip-heat era. Alafaya Woods is most of it.
- 1990–199938.1%The biggest single band, and the median sits inside it.
- 2000 and later35.2%Live Oak Reserve, The Sanctuary, Isles of Oviedo.
Seminole County Property Appraiser CAMA extract, Parcels.csv dated 5 September 2026.
Safety
If it is any of these, stop reading
A burning or hot-electrical smell. Smoke or scorching at the disconnect. A breaker that trips again immediately after being reset once. Water running into a ceiling or wall. A loud metallic grinding from the condenser. The full emergency list, and what to do while you wait.
Symptom not on the list?
Describe what it is doing and when. Most faults in this housing stock narrow to two or three candidates from the description alone.
Sources for this page
- This Old House — air conditioner repair cost guide (updated 16 March 2026)
- Angi — how much HVAC repair costs (2026 figures, national)
- Seminole County Property Appraiser — the source of every build year and parcel count on this site
- Fla. Stat. s. 489.105(3) — Class A and Class B air-conditioning contractor scope, including the disconnect-side electrical work
- DBPR — Verify a Licensee