HVAC Leak Detection in Houston starts with pinpointing the actual leak, not guessing at it. If your system is blowing warm air, icing the coils, or dripping into a ceiling pan, our licensed technicians trace refrigerant and condensate leaks with electronic detectors and thermal imaging, then repair and pressure-test before we leave. We serve Harris County homeowners and businesses with same-day appointments and honest, upfront pricing.
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HVAC Leak Detection in Houston is a diagnostic service that locates refrigerant or water leaks inside an air conditioning system before any repair is quoted. We pressurize the circuit with nitrogen, sweep the line set, coils, and fittings with an electronic leak detector, and confirm the exact failure point with a thermal imaging camera or tracer gas. That means you pay to fix the leak that exists, not to recharge a system that will lose the charge again in weeks.
Houston summers push AC systems through 95 to 100 degree afternoons for months, and that heat load stresses solder joints, Schrader valves, and coil tubing. When a homeowner searches for HVAC leak Detection near me Houston after a warm-air weekend, the usual culprits are a pinhole leak in the evaporator coil or a rubbed line set in the attic. We also handle 24/7 HVAC leak repair in Houston Texas for systems that quit cooling overnight or trip the float switch during a storm.
Every diagnostic covers the full circuit and the condensate side, so you leave with a confirmed leak location and a repair plan. Repairs, refrigerant, and parts are quoted after the diagnosis, and we do not recharge a system until it holds pressure.
We check pressures, superheat, and subcooling at the service valves, then pressure-test the circuit with nitrogen. The pressure testing gauge tells us whether the system is losing refrigerant before we sweep for the leak.
An electronic leak detector sweeps the evaporator coil, condenser coil, line set, and fittings. We confirm every reading with a second method, so you are not paying for a repair based on a false positive.
A thermal imaging camera or tracer gas test confirms the exact leak point, including concealed line sets in walls and ceilings. This is how we avoid cutting drywall to find a leak we can locate from the outside.
We check the drain pan, condensate line, and float switch, and use a moisture meter to see how far water has traveled. Clogs and cracked pans are repaired on the spot when possible.
After the repair, we pull a vacuum to 500 microns, pressure-test again, and recharge to the nameplate weight. The system is verified cooling before we leave, with readings you can keep for your records.
We ask what the system is doing: warm air, ice on the lines, water in the pan, or a rising electric bill. That conversation usually narrows the problem to refrigerant or condensate before we arrive, so the technician brings the right tools. Most calls are scheduled same day, and emergency calls are handled around the clock.
The technician checks pressures, superheat, and subcooling at the service valves, then inspects the air handler, evaporator coil, and accessible line set. A pressure testing gauge on the nitrogen regulator shows whether the circuit holds. This step takes 20 to 30 minutes and tells us whether we are chasing refrigerant or water.
We sweep the coil, fittings, and line set with an electronic leak detector, then confirm the spot with a thermal imaging camera or tracer gas. For concealed line sets in walls or ceilings, tracer gas mixed with nitrogen makes the leak readable without cutting drywall. You see the reading and the location before we quote the repair.
We repair the leak with the correct method for the material: brazing or solder on copper, flare fittings, or a valve replacement. After the repair, we pull a vacuum to 500 microns and pressure-test the circuit again. The system is not refilled until it holds, which is how we know the repair will last.
Once the circuit holds, we recharge to the manufacturer's nameplate weight and verify superheat and subcooling at the operating conditions. The technician checks the condensate drain and float switch while the system runs, then walks you through what was found and what was fixed. You get the readings in plain language.
Purpose-built equipment, used by trained technicians — so the job is done accurately the first time.
Senses halogen refrigerant at parts-per-million levels on coils, line sets, and fittings. It is the first sweep on every refrigerant call and narrows the search before we confirm with a second method.
Shows temperature differences that reveal a leak at a coil or moisture in a ceiling. We use it to scan air handlers and concealed line sets without opening walls.
Reads a nitrogen and tracer gas mix in a concealed line set or coil. It is the method we use when electronic detection is inconclusive, and it locates leaks inside walls without demolition.
Pressurizes the circuit to confirm whether it holds before and after a repair. The gauge reading is how we prove a repair instead of hoping it worked.
Measures water content in drywall, insulation, and decking around an air handler. It tells us how far a condensate leak traveled and whether the repair needs to include building materials.
Picks up the hiss of a pressurized leak in a line set or water line. We use it on concealed runs where a camera cannot reach and pair the reading with pressure testing.
Pulls the circuit to 500 microns after a repair and confirms no moisture remains. A proper vacuum is what keeps a repaired system from failing again in a month.
A homeowner in Meyerland had warm air for two weeks. Another company added refrigerant twice without finding the leak, and the system was losing charge within days each time.
We pressure-tested the circuit, found a pinhole in the evaporator coil with an electronic detector, and confirmed it with thermal imaging. The coil was repaired, the system pulled to 500 microns, and recharged to nameplate weight. It held through the rest of the summer.
Water was dripping through a ceiling under an attic air handler in the Energy Corridor. The float switch had failed and the pan was overflowing into insulation and drywall.
We cleared the clogged condensate drain, replaced the float switch, and used a moisture meter to map the wet area. The homeowner dried the insulation and patched the drywall. No further dripping after two weeks of monitoring.
A Downtown Houston property manager had a rooftop unit losing refrigerant and short-cycling. Tenants were complaining, and the building needed a diagnosis without a shutdown.
We used tracer gas to find a leak in a concealed line set, repaired it, and pressure-tested the circuit. The unit was recharged and cooling the same afternoon, and the building received a written report with the readings.
Most HVAC leak calls fall into a few patterns. Here are the ones we see most often in Houston, and what happens if they are left alone.
Ask a pro →We pressure-test the circuit, sweep for the leak with an electronic detector, and confirm the location with thermal imaging or tracer gas. Then we repair the leak, pull a vacuum, and recharge to nameplate weight so the fix holds.
We clear the drain, check the pan and float switch, and use a moisture meter to map how far the water traveled. If the coil is icing from a refrigerant problem, we find that leak too, so the water does not come back.
We shut the system down, thaw the coil, and test airflow and refrigerant charge. If a leak is the cause, we locate it with an electronic detector and repair it before recharging, then verify superheat and subcooling at operating conditions.
A diagnostic with pressure testing and an electronic leak sweep finds the leak before it becomes a no-cool call. We repair it and verify the charge, which brings runtime and power draw back to normal.
$150 - $450 for the diagnostic; repairs and refrigerant quoted separately
Typical 2026 pricing for HVAC Leak Detection in Houston runs $150 to $450 for the diagnostic, depending on whether we are tracing refrigerant or water and how concealed the leak is. Repairs are quoted after we show you the leak, and refrigerant is priced by the pound. Homeowners looking for affordable HVAC Leak Detection Houston TX get a clear number before work starts, and we do not recharge a system until it holds pressure. A repair that lasts is cheaper than three recharges that do not.
A proper diagnosis costs less than a second recharge and far less than a compressor replacement. We prove the leak, repair it, and verify the circuit holds, so you pay once for a fix that lasts.
Refrigerant diagnostics require EPA-certified handling, electronic detection, and a recharge, which costs more than tracing a condensate leak. Water-side leaks are usually faster to locate but can involve more building repair.
An accessible line set or coil takes less time than a concealed line set in a wall or ceiling. Tracer gas and thermal imaging add time but avoid demolition, which usually saves money overall.
A residential split system is simpler to test than a commercial rooftop unit or a multi-zone system. Larger systems take longer to pressurize and sweep, which affects the diagnostic price.
A Schrader valve replacement is a small job. A coil repair or line set replacement takes more labor and material. We quote the repair after the diagnosis so you see the difference before deciding.
“Our AC was blowing warm air for a week and another company just kept adding refrigerant. Leak Detection The Heights found a pinhole in the evaporator coil with an electronic detector and showed me the reading. They repaired it, pulled a vacuum, and the system has held all summer. The price was exactly what they quoted on the phone.”
Marcus T.Homeowner, Meyerland
✓ Verified“Water was dripping through the ceiling under our air handler. They came out same day, cleared a clogged condensate drain, and used a moisture meter to show how far the water had traveled. They also checked the float switch and found it was stuck. Fast, clean work and no upsell.”
Priya S.Homeowner, Energy Corridor
✓ Verified“We had a rooftop unit losing refrigerant in a commercial building and needed it fixed without shutting down tenants. The technician used tracer gas to find a leak in a concealed line set and had it repaired and pressure-tested the same afternoon. Clear communication and a written report for our records.”
Danny R.Property Manager, Downtown Houston
✓ VerifiedMost HVAC leak detection calls in Houston run $150 to $450 in 2026, depending on whether we are tracing refrigerant or water and how concealed the leak is. A standard refrigerant diagnostic with electronic detection sits at the low end. Tracer gas work on a concealed line set or a condensate leak inside a wall pushes toward the top. The repair is quoted separately after we show you the leak.
A water leak from an HVAC system in Houston almost always comes from a clogged condensate drain, a cracked drain pan, or a frozen evaporator coil that thaws and overflows. The humidity here means drain lines grow biological growth fast. We clear the drain, check the pan and float switch, and confirm the coil is not icing from a refrigerant problem. Left alone, that water reaches decking and drywall within days.
A licensed HVAC or plumbing leak technician with EPA refrigerant certification fixes HVAC leaks in Houston Texas. Refrigerant work is regulated, so the technician must be certified to recover and recharge. We handle both sides: refrigerant leaks in the circuit and water leaks from the condensate system. Call 832-839-4984 and we will schedule a same-day diagnostic.
Homeowners insurance in Houston usually covers water damage from a sudden HVAC condensate leak but not the repair of the leaking unit itself, since wear and tear is excluded. Refrigerant leaks are almost never covered. We document the leak location and cause with photos and readings so you have what your adjuster needs. Read your policy or call your agent before filing.
Slab Leak DetectionA slab leak under a Houston home can raise indoor humidity and make an HVAC system work harder. We trace the slab leak with acoustic listening and thermal imaging, then confirm whether the moisture near your air handler is condensate or a supply-line failure.Explore →
Foundation Leak DetectionFoundation movement cracks supply lines and can shift the line set running through a slab. When an HVAC leak appears alongside cracked drywall or sticking doors, we check the foundation plumbing at the same time so you fix the cause, not just the symptom.Explore →
Pool Leak DetectionPool equipment pads share space with HVAC condensate lines and irrigation. If you see water near both, we isolate the pool loop with pressure testing and confirm whether the HVAC drain or the pool plumbing is losing water. One visit can rule out both.Explore →
Sewer Line Leak DetectionA sewer leak under a slab can saturate the soil around HVAC ductwork and cause corrosion. We use a pipe inspection camera to find the break, and we check whether sewer gas or moisture is reaching the air handler through the slab.Explore →
Gas Leak DetectionGas furnaces and rooftop units have gas piping that can leak at fittings. We pressure-test gas lines and use a tracer gas detector to confirm, then coordinate the HVAC side so your heat is restored safely and to code.Explore →
Plumbing Leak DetectionWater leaks near an air handler are often plumbing, not HVAC. We trace supply and drain lines with acoustic and thermal tools so you do not pay for an HVAC repair when the real leak is a pinhole in a copper pipe behind the wall.Explore →
Roof Leak DetectionRoof leaks in Houston often show up as water in the attic near the air handler, which looks like a condensate problem. We inspect the roof deck and the HVAC pan together, so the repair addresses the actual source before insulation and decking rot.Explore →
Irrigation System Leak DetectionIrrigation lines run near condenser pads and can undermine the slab the unit sits on. We isolate the irrigation zone with pressure testing and check the HVAC pad and drain at the same time, which is common on larger lots in Memorial and the Energy Corridor.Explore →If your system is blowing warm air or dripping water, call 832-839-4984. We are licensed, insured, and EPA-certified, and we show you the leak before quoting the repair. Same-day appointments and 24/7 emergency service across Harris County.
Book a Diagnostic 8328394984 →Call us at 832-839-4984 or send an email and we will get back to you fast. We answer the phone 24/7 for emergencies and schedule standard detections same day or next day across Houston and Harris County. Tell us what you are seeing and we will give you a flat detection price over the phone.