AC not turning on
AC not turning on in Winter Springs, Florida
An air conditioner that will not start at all is usually a power or safety interruption rather than a dead system: a tripped breaker, a condensate float switch that has shut it down, a thermostat with dead batteries, or a pulled outdoor disconnect. If the condenser hums and the fan does not spin, it is the run capacitor.
Diagnosis
What is most likely wrong
| # | Cause | How common | What it looks like |
|---|---|---|---|
| 1 | Tripped breaker | Very common | Thermostat calls, nothing runs at all. Check both breakers. |
| 2 | Condensate float switch tripped | Very common | Indoor and outdoor units both dead, no fault light. A full pan or a blocked line is behind it. |
| 3 | Thermostat: dead batteries or lost power | Common | Blank display, or a display that calls and nothing answers. |
| 4 | Failed run capacitor | Common | Condenser hums, fan does not spin, or spins if nudged (do not). |
| 5 | Failed contactor | Common | Indoor blower runs, outdoor unit never engages. |
| 6 | Pulled or corroded outdoor disconnect | Less common | Landscapers and pool techs knock these; the pull-out should be fully seated. |
| 7 | Blown low-voltage fuse on the control board | Less common | Everything dead after a storm or a shorted thermostat wire. |
Before you call
What you can safely check yourself
- Thermostat display on? Replace batteries before anything else.
- Both breakers — reset a tripped one once. If it trips again, stop and call.
- The outdoor disconnect beside the condenser: pull-out seated, no scorching.
- The condensate drain: a full secondary pan or a wet stain on the ceiling below the air handler means the float switch did its job and the drain is blocked.
- Do not spin the condenser fan by hand. A capacitor holds a lethal charge.
Where the licensed line is
Refrigerant, capacitors and the inside of an electrical panel are not homeowner jobs. A run capacitor holds a lethal charge after the disconnect is pulled. Refrigerant handling requires EPA Section 608 certification. And in Florida the work itself is regulated: an air-conditioning contractor licensed under Chapter 489 may replace, disconnect and reconnect the power wiring at the dedicated disconnect, and repair or replace breakers and fuses on dedicated HVAC circuits — s. 489.105(3). Verify any Florida contractor's licence at the DBPR licensee search before work begins.
In Winter Springs
Why this happens in this housing stock
Two of the top causes are humidity-driven, and that is not a coincidence in a city bounded by Lake Jesup with Howell Creek running through it. Sustained dewpoints in the seventies mean the evaporator coil is condensing water for most of nine months, and everything downstream — drain line, pan, float switch — is a wear point. Drain clearing at a researched $80–$250 is the routine Florida call, and the float switch that shut you down was the cheapest thing that happened to you this week.
The disconnect case is a pool-home case: 31.3% of Winter Springs homes have a pool, and the pool tech, the screen-cage installer and the landscaper all work in the same side yard as the condenser. Condenser placement on a pool lot.
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.
Cost
What the fix typically costs
| Job | Researched range | What drives it |
|---|---|---|
| Diagnostic visit | $70–$200 | Usually credited to the repair. After hours costs more. |
| Capacitor replacement | $150–$400 | Most common single part failure on a Florida condenser. |
| Contactor or relay | $100–$450 | A wear item. |
| Drain line clearing | $80–$250 | The routine local call. |
| Thermostat repair or replacement | $100–$500 | From a $20 stat to a matched communicating control. |
Researched ranges from HomeGuide, HVAC Calculator Hub and This Old House (national, updated 16 March 2026), checked September 2026. Not our prices.
Read this before you use any number on this page
These are researched market ranges, not our prices and not a quote. The dollar figures come from published third-party cost guides — named and linked at the foot of the page — plus one figure that is not a range at all: the City of Winter Springs’ own published mechanical permit fee. They are here so you can tell whether a quote you have been handed is in the ordinary range for this work. No two houses in Winter Springs cost the same to do, and we do not quote a job before we have seen it.
Problems
Not getting anywhere?
Tell us the symptom, the build year of the house and roughly how old the equipment is. That usually narrows it to two candidates before anyone drives out.
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.