AC not turning on in Altamonte Springs
Start with the two switches, not the equipment: the breaker at the panel and the disconnect by the condenser. After that, check the thermostat display and the condensate float switch — a full stop with nothing running is very often the float switch doing exactly what it is designed to do, not a broken system.
What is most likely wrong
Ranked by probability| Cause | How common | What it looks like |
|---|---|---|
| 1. Tripped breaker or open disconnect | Very common | Nothing runs at all — no fan, no hum, no change at the thermostat when you raise the set point. |
| 2. Condensate float switch tripped | Very common in this humidity | Thermostat calls for cooling but the outdoor unit never starts; often paired with water near the air handler. |
| 3. Dead thermostat batteries or a blank display | Common | Screen is blank or unresponsive; nothing at the equipment changes because no call for cooling is ever sent. |
| 4. Failed contactor | Less common, needs a technician | Breaker holds, disconnect is in, thermostat calls for cooling — and the outdoor unit still does nothing. |
What you can safely check yourself
Before you call- Check the breaker at the main panel and the pull-disconnect beside the condenser — two separate switches.
- Look at the thermostat display. Replace batteries if it is a battery model and the screen is blank.
- Follow the condensate line to its cleanout tee. A safety float switch that has tripped on a blocked line shuts the whole system down on purpose — see AC leaking water.
- If the breaker trips again the instant you reset it, stop. That is a fault, not a nuisance trip — see AC tripping the breaker.
Where the licensed line is
A run capacitor holds a lethal charge even after the power is off. Refrigerant handling requires EPA Section 608 technician certification, and in Florida this work requires a state-licensed air conditioning contractor under Chapter 489, F.S.
Verify the licence of any contractor you hire at the DBPR licensee search.
Why this happens in Altamonte Springs
Local patternThe median residential parcel in Altamonte Springs was built in 1981, and 72.4% of the city's 13,253 residential parcels went up between 1970 and 1989. The equipment on those systems has typically been through two or three changeouts — but the electrical panel serving it is frequently original to the house, now 45+ years old.
A breaker that trips repeatedly on a system this age is worth taking seriously rather than resetting on a loop.
Seminole County Property Appraiser CAMA extract (Parcels.csv, 5 September 2026), tax district A1 — Altamonte Springs. 13,253 improved residential parcels: single-family, townhome and condominium. Apartments and manufactured homes excluded.
What the fix typically costs
Researched ranges| What is being priced | Researched range | What moves it |
|---|---|---|
| Diagnostic / service call | $75–$150 | Orlando-market diagnostic or dispatch fee. After-hours calls commonly $150–$250. |
| Condensate drain clearing | $150–$250 | Clearing a blocked condensate line, Orlando market — the single most common avoidable failure call in this humidity. |
| Contactor | $150–$350 | Orlando market, parts and labour. A Central Florida contractor's own published price runs $150–$250. |
Sources: Smart Home Air & Heat, Orlando repair-cost ranges (August 2026), Clear Comfort Orlando's own published prices, and for the expansion valve the Angi Orlando aggregator estimate (May 2026), the only source found for that part. Compiled September 2026. Not this business's prices.
Related questions
FAQWhy is my AC not turning on?
Start with the two switches, not the equipment: the breaker at the panel and the disconnect by the condenser. After that, check the thermostat display and the condensate float switch — a full stop with nothing running is very often the float switch doing exactly what it is designed to do, not a broken system.