Should you repair or replace your AC unit in Florida?
Short answer: replace when the unit is past ~10 years in coastal Florida, the repair costs more than about half of a replacement, or it uses phased-out refrigerant. Repair when it is younger, the fix is small (capacitor, contactor, filter, thermostat) and the system cools evenly. Every case is different — a $129 diagnostic tells you which side you are on in about an hour.
The 5 checks before you decide
- Age against the coastal rule. Coastal salt air shortens equipment life; if your condenser is past the 10-year mark and a major component fails, replacement usually wins.
- Repair cost versus half of replacement. If a single repair quote approaches half the cost of a new system on an older unit, put that money toward replacement instead.
- Refrigerant type. Older systems running phased-out refrigerant get expensive to recharge — recharging a leaky phased-out system rarely makes sense.
- Efficiency loss you can feel. Rising power bills with the same habits are a real cost: an aging system quietly charges you every month even when it "works".
- Breakdown frequency. Two or more significant failures in one season is the pattern that turns into a jump-from-cold-house emergency later.
When repair is the right call
Capacitors, contactors, float switches, drain clogs, thermostats and relays are inexpensive parts on otherwise healthy systems. If your unit is under ~10 years and the repair is one of these, repair and keep the warranty intact.
What a diagnostic covers
City to City HVAC publishes its rates: a $49 tune-up/inspection and a $129 standard diagnostic — the technician tests capacitors, refrigerant pressures, temperature split, amp draw and drain, then quotes the repair or replacement options in writing before any work.
FAQ
Is it worth repairing a 15-year-old AC unit?
Usually only for small electrical parts. On a 15-year-old coastal system, compressor or coil failures normally tip the math toward replacement.
How long do AC units last in coastal Florida?
Coastal salt air shortens life versus inland installs — plan around the 10-year mark rather than the 15-20 years you see quoted for inland systems, and judge each case on maintenance history.