HVAC services in Longwood, Florida
Longwood HVAC handles residential air conditioning repair, full system changeouts, heat pump conversions, maintenance, duct repair and indoor air quality across Longwood and the unincorporated Seminole County neighbourhoods around it. Two-thirds of the housing here was built between 1970 and 1989, so the same six jobs come up again and again.
AC repair
Not cooling, freezing over, tripping the breaker, or running without ever satisfying the thermostat. Your contractor finds the fault before quoting a part.
System replacement & changeouts
A full changeout on Longwood's 1970s and 80s stock is rarely just a box swap. Duct condition, return sizing and attic access all decide the price.
Heat pumps
If your air handler still heats with electric resistance strips, a heat pump conversion is the single change Duke Energy pays the most toward.
Maintenance
Coil cleaning, drain treatment, capacitor and contactor checks. Under Longwood's canopy the outdoor coil is the part that actually needs the visit.
Ductwork & airflow
Leak testing, sealing, replacing collapsed flex, and adding return air where a single central return is starving the system.
Indoor air quality
Humidity control, filtration and ventilation — the part of a Florida system that decides whether 75°F feels cool or feels clammy.
Service
AC repair
Most Longwood repair calls sort into four buckets: a failed run capacitor, a condenser coil packed with leaf litter and pollen, a frozen evaporator caused by restricted return air, or a refrigerant leak. Your contractor should diagnose the cause before quoting a part, because two of those four will fail again in weeks if the underlying restriction is left alone.
One thing worth knowing if your system is R-410A: it can still be legally repaired and recharged. The EPA's Technology Transitions rule under the AIM Act restricts new equipment, not servicing. What has changed is matching — new R-410A condensers and coils come from remaining pre-2025 inventory, so a mismatched coil and condenser is now the real constraint on repairing an older split system rather than the refrigerant itself.
Service
System replacement and changeouts
A changeout in Longwood is a permitted, inspected job. The City requires a mechanical permit — equipment replacement is not on its eight-item exempt list — and charges a flat $246.61 for a residential mechanical change-out under Resolution 26-1724, effective 1 July 2026. Plans examination is waived for equipment replacement, so the permit does not sit in review. Outside the city limits the job files with Seminole County instead, on the county's own fee schedule.
On efficiency: Florida sits in the DOE's hot-humid Southeast region. The minimum for a split-system central air conditioner under 45,000 Btu/h is 14.3 SEER2, and 13.8 SEER2 at 45,000 and above — higher than the 13.4 SEER2 national floor. Critically, in the Southeast the standard is enforced at the date of installation, not manufacture. DOE is explicit that there are no delays or exemptions.
On sizing: latent load, not just sensible load, drives equipment selection in this climate. An oversized system short-cycles, never runs long enough to pull moisture out, and leaves a house that is cold and clammy at the same time. Bigger is not the answer here, and in a 1970s plan with one central return it is frequently the problem.
Service
Heat pumps
If your air handler still heats with electric resistance strips, a heat pump is the change with the most money behind it. Duke Energy publishes its highest Home Energy Improvement tier — up to $1,000 — for replacing electric strip heat with a qualifying heat pump, against $300 for replacing an air conditioner with an air conditioner. That is a real difference in the net cost of the job, and it turns on a fact about your existing air handler rather than anything about the new equipment.
The catch is the order of operations. The free Home Energy Check has to be on file first. The rebate page walks through it.
Service
Maintenance
Under a Longwood canopy the outdoor coil is the part that actually earns the visit. Leaves, pollen and the fine grit that comes off oak bark pack the fins, and a fouled coil raises head pressure in precisely the weather that is already stressing the compressor. A maintenance visit here means the coil gets washed, not glanced at.
The rest is unglamorous and matters: condensate drain treatment before it backs up into an attic ceiling, run capacitor and contactor checked under load rather than at rest, refrigerant charge verified against the actual measured airflow, and filter access confirmed so the homeowner can reach it.
Service
Ductwork and airflow
This is the Longwood job. Two-thirds of the city's housing stock dates from 1970–1989, and in that stock the supply runs are flexible duct in an attic that reaches well over 100°F in summer. A duct contractor tests for leakage, seals or replaces what has failed, straightens runs that sag between trusses, and adds return air where a single central return is starving the blower.
There is also money here. Duke Energy publishes an instant rebate of up to $450 for duct testing and repair, on top of the equipment rebate — and unlike the equipment tiers it does not require you to replace anything.
Service
Indoor air quality
In Central Florida comfort is a humidity problem wearing a temperature costume. A house held at 75°F with 60% relative humidity feels worse than the same house at 77°F and 48%. Correct equipment sizing does most of the work; filtration, ventilation and dedicated dehumidification do the rest.
Filtration is also where leaky ducts and a hot attic show up: if the return side of the system is pulling air out of the attic through failed joints, no filter in the world is upstream of it.
Questions people actually type
Costs and cadence
How much does an AC capacitor replacement cost?
Published guides put capacitor replacement at roughly $80–$400 installed nationally, averaging near $175, with Florida-specific sources citing $85–$200 for a job that takes under half an hour. Researched market estimates, not quoted rates. Capacitor failure is the most common single AC repair in Florida, and heat plus lightning-storm frequency is why. The full answer.
How much does it cost to replace an AC compressor?
Widely cited at $1,500–$3,500 for a residential unit out of warranty, with an outer range of about $1,100–$4,650 installed once refrigerant recovery and recharge are included. Researched market estimates. On a system past ten years the compressor quote is usually the moment to price a changeout beside it — particularly if the system is R-410A, because new R-410A condensers and coils are limited to remaining pre-2025 inventory and matching one gets harder every season. The full answer.
What is the HVAC diagnostic fee?
Florida sources commonly cite $75–$200 for a diagnostic or service-call fee, with some putting Florida contractors at $65–$95, frequently waived or credited toward the repair if the work goes ahead. Researched market estimates. Ask any contractor two things before they come out: what the fee is, and whether it is credited if you proceed. The full answer.
How often should I change my AC filter in Florida?
More often than the sleeve says, because Florida systems run most of the year and a Longwood lot under oak canopy loads a filter with pollen in spring and leaf dust in autumn. Check it monthly and change it when you can no longer see light through it. The filter is also the cheapest insurance against the most common failure: restricted return air freezing an evaporator coil, which in a 1970s plan with one central return is already the tightest part of the system. The full answer.
Sources
- City of Longwood Fee Schedule (Resolution 26-1724, effective 1 July 2026). https://www.longwoodfl.org/702/Fee-Schedule
- City of Longwood, 2020 FBC Chapter 1 Administrative Amendments (Exhibit A to Ordinance No. 21-2196), Sections 105.2, 105.2.1 and 107.3. https://www.longwoodfl.org/DocumentCenter/View/4736/2020-FBC-Londwood-Administrative-Amendments-PDF-
- U.S. DOE, 2023 Central Air Conditioner Standards FAQ. https://www1.eere.energy.gov/buildings/appliance_standards/pdfs/2023_CAC_Standards_FAQ_10-5-2022_Final.pdf
- U.S. EPA, HFC restrictions by sector (AIM Act Technology Transitions rule). https://www.epa.gov/climate-hfcs-reduction/hfc-restrictions-sector
- Duke Energy, Home Energy Improvement — HVAC Replacement. https://www.duke-energy.com/home/products/home-energy-improvement/hvac-replacement
- Seminole County Property Appraiser CAMA extract (Parcels.csv, dated 5 September 2026), tax district L1 — Longwood; improved residential parcels, DOR codes 01 and 04. https://www.scpafl.org/
Figures are dated. Permit fees, rebate amounts and code cycles change — re-check the primary source before you rely on a number here.
Tell us what the house is doing
Describe the symptom and the age of the system and we will tell you which of the six this is likely to be before anyone drives out.