AC Replacement in Orlando FL
Replacement is the largest mechanical decision most homeowners make about their house, and it is usually made under pressure with a failed system and a hot living room. Understanding the trade-offs before that moment produces better outcomes than deciding in a hurry.
Requests are coordinated through our Orlando office at 5401 S Kirkman Rd, Suite 3310.
Short answer
Replacement generally becomes the better value when the equipment is in its mid-teens or older, when repairs are recurring, when a compressor or coil has failed, or when the system uses a refrigerant that is expensive to obtain. Installation quality — sizing, airflow and commissioning — matters more to the result than the brand on the cabinet.
Symptoms we hear about
- System is 12 to 15 years old or more
- Two or more repairs in the past two cooling seasons
- A failed compressor or leaking evaporator coil
- Equipment uses R-22, which is costly and scarce
- Rooms that have never cooled evenly
- High humidity indoors even when the temperature is met
The repair-versus-replace framework
Rather than a single rule, weigh four factors together: age, the cost of the repair in front of you, the repair history, and the refrigerant type.
| Factor | Leans toward repair | Leans toward replacement |
|---|---|---|
| Age | Under 10 years | Mid-teens or older |
| Repair cost | A small fraction of replacement | Approaching a third or more of replacement |
| History | First real failure | Recurring repairs across seasons |
| Refrigerant | R-410A or newer | R-22 or hard-to-source charge |
| Comfort | Performed well before this failure | Chronic hot rooms or humidity problems |
| Coverage | Parts warranty still active | No coverage remaining |
A compressor failure on fifteen-year-old R-22 equipment is the clearest replacement case. A capacitor on a six-year-old system is the clearest repair case. Most decisions sit between, which is why the diagnosis should come with measurements.
Sizing: the mistake that follows you for fifteen years
Bigger is not better in a humid climate. An oversized system cools quickly, satisfies the thermostat and shuts off before it has removed much moisture. The result is a house that is cold and clammy, with short cycling that stresses the compressor.
Correct sizing comes from a load calculation that accounts for square footage, insulation, window area and orientation, infiltration, ceiling heights and duct location — not from replacing like-for-like tonnage because that is what was there. Homes that have had windows, insulation or additions changed since installation often need a different size than the old equipment.
- Undersized: long run times, never quite reaching setpoint on the hottest afternoons
- Correctly sized: long steady cycles, good dehumidification, comfortable at moderate setpoints
- Oversized: short cycles, cold and damp air, uneven comfort, extra wear
Efficiency, staging and what actually improves comfort
Efficiency ratings describe energy use, not comfort. In Central Florida, run-time behavior matters as much as the rating on the label.
Single stage
Lowest cost, on-or-off operation. Works well when sized correctly, but dehumidification depends entirely on getting long cycles.
Two stage
Runs at reduced capacity most of the time, producing longer cycles and better moisture removal. Often the best comfort-per-dollar upgrade in this climate.
Variable capacity
Modulates continuously, delivering the steadiest temperature and the strongest humidity control, at the highest cost and with more sophisticated controls to service.
For rooms that were never served well by ductwork, a ductless mini split addition may solve the problem more effectively than upsizing the central system.
What is included in a good installation
Two installations of identical equipment can perform very differently. These are the items that separate them.
- A load calculation, not tonnage matched to the old unit
- Duct evaluation, with sealing or correction where static pressure or sizing is wrong
- A properly sized filter arrangement rather than a restrictive afterthought
- New line set or documented flush and evaluation when reusing the existing one
- Nitrogen purge while brazing, then pressure test and deep evacuation
- Charge weighed in per specification and verified with superheat and subcooling
- Correct condensate drainage: trap, slope, float switches and secondary protection
- Airflow set to the manufacturer's specification for the installed capacity
- Commissioning numbers documented and provided to you
- Permits and inspection where required, and manufacturer warranty registration
Ask for the commissioning readings. Anyone who does the work properly will be glad to hand them over.
Refrigerant transition considerations
The industry is moving to lower-global-warming-potential refrigerants, and that transition affects replacement timing. R-22 equipment is already expensive to service. R-410A systems remain widely serviceable, while new equipment increasingly uses newer refrigerants with different handling requirements.
Practically, this means two things: do not invest heavily in R-22 equipment, and when replacing, ask which refrigerant the new system uses and what the service outlook is. Mixing an old indoor coil with a new outdoor unit across refrigerant types is not a shortcut — it produces mismatched performance and warranty problems.
Getting proposals you can actually compare
- Ask each provider for the same information: model numbers, capacity, staging, and whether a load calculation was performed
- Confirm whether duct work, the line set, the filter cabinet and permits are included or excluded
- Compare labor warranty length separately from the manufacturer's parts warranty
- Ask who registers the equipment for warranty and when
- Ask what commissioning measurements will be documented
- Get everything in writing before deciding, and be cautious about pressure to sign same-day
This site does not quote installation pricing, because equipment, capacity, duct condition and access change it dramatically. Use the cost page to weigh a pending repair against replacement, then collect written proposals.
AC Replacement questions
- How long does an air conditioner last in Florida?
- Commonly 10 to 15 years, sometimes longer with consistent maintenance and shorter when systems run with low charge or restricted airflow. Because run hours here are high, equipment tends to reach the replacement conversation earlier than the same model would in a cooler climate.
- Should I repair or replace my AC?
- Weigh age, the cost of this repair, repair history and refrigerant type together. A major repair on mid-teens R-22 equipment usually favors replacement; a small electrical repair on newer equipment favors repair. Ask for measured diagnostic findings so the decision rests on facts.
- Is a bigger AC unit better?
- No, and in a humid climate it is actively worse. Oversized equipment satisfies the thermostat before removing much moisture, leaving the house cold and damp while short cycling stresses the compressor. Correct sizing from a load calculation delivers better comfort than extra tonnage.
- Do I have to replace the indoor and outdoor units together?
- In most cases yes. The coil, metering device and outdoor unit are designed as a matched set, and mismatching them costs capacity and efficiency, complicates warranty coverage, and can be impossible across refrigerant types. Replacing only one part is a limited exception, not the norm.
- What efficiency rating should I choose?
- Consider how long you plan to stay, your run hours and your comfort priorities. In Central Florida, moving from single stage to two stage often improves humidity control more noticeably than chasing a higher rating alone, because longer cycles remove more moisture.
- Do my ducts need to be replaced too?
- Not always, but they should be evaluated. Leaky, undersized or poorly routed ducts undermine any new system, and attic duct leakage in this climate pulls in hot, humid air. Static pressure measurement tells you whether the duct system can support the equipment being installed.
- How long does an AC replacement take?
- A straightforward changeout is typically a one-day job. Add time for duct modifications, difficult attic or rooftop access, electrical upgrades, permitting or inspection scheduling. Ask for the expected timeline in writing along with the proposal.
Talk through your AC problem
Describe what the system is doing and ask about current service availability in your part of the Orlando area.
5401 S Kirkman Rd, Suite 3310 · Orlando, FL 32819