AC Refrigerant Leak Repair in Orlando
Refrigerant is not a consumable. A properly sealed air conditioning system holds the same charge for its entire service life. So when a technician says the system is low, the accurate translation is that refrigerant has escaped — and the useful question is where, not how much to add.
Requests are coordinated through our Orlando office at 5401 S Kirkman Rd, Suite 3310.
Short answer
Low refrigerant means a leak. Repair involves locating the leak, correcting it, evacuating the system, and recharging to the manufacturer's specified weight. Repeated top-offs without leak repair cost more over time and expose the compressor to damage from poor cooling and lubrication.
Symptoms we hear about
- Cooling that has weakened gradually over one or two seasons
- Ice on the indoor coil or on the large copper suction line
- Long run times with the system rarely satisfying the thermostat
- Hissing or bubbling sounds near the indoor coil
- Oily residue at a fitting, valve or coil joint
- A history of being told the system needed refrigerant more than once
Why 'it just needs a charge' is an incomplete answer
A refrigerant circuit is a closed loop of brazed copper, coils, valves and fittings. Nothing in normal operation removes refrigerant from it. If the charge is short, there is a physical path for refrigerant to escape — a corroded coil tube, a failed braze joint, a leaking service valve, a rubbed line set, or a Schrader valve that no longer seals.
Adding refrigerant restores cooling temporarily. It does not stop the loss, and it has three costs: the refrigerant itself, the eventual repeat visit, and the wear a low-charge system inflicts on the compressor while it runs hot and poorly lubricated. Over three summers, top-offs often exceed what the repair would have cost.
Where leaks actually occur
| Leak location | Typical cause | Repair character |
|---|---|---|
| Evaporator coil | Formicary corrosion pitting the aluminum or copper tubing | Often coil replacement rather than spot repair |
| Condenser coil | Physical damage, vibration fatigue, corrosion | Repair sometimes possible; replacement common |
| Service valves / Schrader cores | Worn seals, past gauge connections | Inexpensive and quick when this is the only source |
| Braze joints | Poor original joint, vibration over years | Access-dependent; repairable |
| Line set | Abrasion where lines pass through framing, exterior damage | Section repair or replacement |
| Filter drier / accessories | Fitting seal failure | Component replacement |
Coil leaks are the most consequential because they usually mean a component replacement, and on older equipment coil pricing pushes the conversation toward AC replacement.
How leaks are found
No single method finds every leak, so technicians combine approaches based on where the loss rate points.
- Visual and oil-trace inspection — escaping refrigerant often carries oil, leaving a telltale residue
- Electronic leak detection — a heated-diode or infrared detector sweeping joints, coil sections and valves
- Bubble solution — effective on accessible fittings and valves
- Ultraviolet dye — introduced into the system and inspected later, useful for slow leaks
- Nitrogen pressure testing — the system is isolated and pressurized with dry nitrogen to reveal loss and locate it audibly
- Standing vacuum test — after evacuation, a rising vacuum indicates the system is not sealed
Very slow leaks are genuinely hard to find, and an honest technician will tell you when a leak search is a multi-visit process rather than a guaranteed same-day outcome.
What proper repair includes
- Recover the remaining refrigerant in accordance with EPA requirements — venting is not legal
- Repair or replace the leaking component
- Replace the filter drier, since an opened system has been exposed to moisture and air
- Pressure test with nitrogen to confirm the repair holds
- Evacuate to a deep vacuum and perform a standing vacuum test
- Weigh in the manufacturer-specified charge rather than charging by pressure alone
- Verify performance with superheat, subcooling and temperature-split readings
Skipping the drier, the nitrogen test or the vacuum step is the usual reason a 'repaired' system leaks again or performs poorly afterward. It is reasonable to ask which of these steps are included.
Refrigerant type and why it affects price
Cost depends heavily on which refrigerant the system uses. Older R-22 equipment is expensive to charge because production has been phased out and remaining supply is reclaimed. R-410A systems are less costly per pound, and newer lower-GWP refrigerants have their own supply and handling considerations as the industry transitions.
For an R-22 system with a coil leak, the arithmetic often favors replacement — not because the repair is impossible, but because the refrigerant and coil costs approach a meaningful share of new equipment. Check the data plate on your outdoor unit to see which refrigerant you have.
Safety and why this is not a homeowner task
Refrigerant is stored under pressure, can cause frostbite injuries on contact, displaces oxygen in enclosed spaces, and is federally regulated with respect to handling and release. Purchasing sealant cans or top-off kits creates additional risks: sealants can contaminate metering devices and recovery equipment, and some are refused by service companies afterward.
This site does not provide refrigerant handling instructions. If you suspect a leak, shut the system off if it is icing or performing badly and request professional service.
Cost planning for leak work
Leak-related work spans a wide range — roughly $350 to $1,500 and beyond — because the variables stack: how long the search takes, where the leak is, whether a coil is involved, refrigerant type, and system size.
- A leaking Schrader core found quickly sits near the bottom of that range
- An accessible braze joint repair with a modest recharge sits in the middle
- An evaporator coil replacement with a full R-410A charge sits at the top
- An R-22 coil leak frequently prices out above a partial replacement
Model your scenario on the AC repair cost page, then confirm with a diagnosis. These are planning ranges, not quotes.
Refrigerant Leak Repair questions
- Does low refrigerant always mean I have a leak?
- In a system that was correctly charged at installation, yes. Refrigerant is not consumed by operation. The only other explanations are an undercharge at installation or refrigerant lost during a previous repair — both of which still mean the system needs measurement rather than a routine top-off.
- Can you just add refrigerant to get me through the summer?
- It is sometimes done as a stopgap, but understand what you are buying: temporary cooling, no repair, and continued compressor stress. Ask what the loss rate suggests, what the repair would involve, and whether the refrigerant cost alone makes the repair the better decision now.
- How long does refrigerant leak detection take?
- Accessible leaks at valves and fittings are often found within a normal service visit. Slow coil leaks can require dye, a return visit, or isolating sections with nitrogen. If a technician tells you a leak search may take more than one visit, that is a sign of realism rather than incompetence.
- Are AC leak sealants a good idea?
- They are generally discouraged. Sealants can migrate and clog metering devices and driers, and they can contaminate recovery equipment, which is why some service companies will not work on systems that contain them. Mechanical repair remains the reliable path.
- Why is R-22 refrigerant so expensive now?
- R-22 production for new equipment was phased out under environmental regulation, so remaining supply is reclaimed or previously produced stock. That scarcity drives the price per pound well above modern refrigerants, and it is a major factor in repair-versus-replace decisions on older systems.
- Is a refrigerant leak dangerous to my family?
- In typical residential leak scenarios the health risk is low, since leaks usually occur outdoors or into unoccupied spaces and dissipate. The real risks come from direct contact with pressurized refrigerant, from large releases in confined spaces, and from continuing to run an undercharged system that can damage the compressor.
- Will my utility bill go up if refrigerant is low?
- Typically yes. An undercharged system runs longer to deliver less cooling, so energy use per degree of comfort rises. Rising run times alongside weaker cooling is one of the more reliable early clues that a charge problem is developing.
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