Important: Refrigerant work is EPA regulated. ProAir Georgetown technicians hold current EPA Section 608 Universal certification. We recover, recycle, and recharge refrigerant according to federal regulations and never vent refrigerants to atmosphere.
Refrigerant Leak Detection & Testing
Professional leak detection using electronic sniffers and UV dye. Find leaks before recharging, or recharge just moves the problem.
High-sensitivity electronic leak detectors locate small leaks in coils, line sets, and fittings that visual inspection misses.
UV dye injection and black light inspection, effective for finding intermittent or slow leaks that evade electronic detection.
Pressure test refrigerant circuits with dry nitrogen to verify leak-free condition before charging new refrigerant.
Refrigerant Service & Recovery
Proper refrigerant recharge, measured by subcooling and superheat, not just pressure gauges. We charge to manufacturer spec.
EPA-compliant refrigerant recovery before any system work requiring circuit opening.
Deep vacuum pull to remove moisture and non-condensables before refrigerant charge, critical for system longevity.
Extended deep vacuum to achieve proper micron levels, we don't rush this step that protects compressor life.
Convert systems from discontinued refrigerants to approved drop-in or replacement refrigerants.
Line Set Service & Repair
Flush contaminated line sets during compressor replacement to prevent new compressor failure from acid or debris.
Professional braze repair of pinhole leaks and joint failures in copper refrigerant lines.
Repair damaged liquid line sections including crimps, kinks, and corrosion failures.
Replace deteriorated suction line insulation, critical for efficiency and preventing condensation in Georgetown's humid summers.
Seal wall and foundation penetrations around line sets to prevent pest entry and air infiltration.
Install locking valve caps to prevent refrigerant theft and unauthorized access to Schrader valves.
Cooling Circuit Components
Replace leaking Schrader valve cores, a small but common source of refrigerant loss over time.
Install or replace liquid line filter driers, required after any system opening to remove moisture and acid.
Replace leaking or damaged service valves on compressors and line set connections.
Replace failed accumulators that protect compressors from liquid refrigerant slugging.
Replace failed thermostatic expansion valves, a hunting or stuck TXV causes refrigerant distribution problems and efficiency loss.
Repair or replace discharge line mufflers that reduce compressor noise and vibration.
Evaporator & Condenser Coil Service
Clean, inspect, and service evaporator coils, dirty coils are a leading cause of reduced cooling capacity in Georgetown homes.
Replace failed or leaking evaporator coils, including proper refrigerant recovery, installation, and recharge.
Straighten bent evaporator fins to restore full airflow through the coil and recover lost capacity.
Clean condenser coils fouled by Georgetown's cottonwood, dust, and debris, critical for summer efficiency.
Repair pinhole leaks and minor damage in condenser coils when full replacement isn't required.
Deep acid wash for severely fouled condenser coils, removes mineral scale, oxidation, and embedded debris.
Address the root cause of a frozen evaporator coil, low refrigerant or restricted airflow. We fix the cause, not just defrost.
Diagnose and repair the refrigerant or airflow condition causing ice formation on copper suction lines.
Why Micron Level Matters More Than Time
Evacuating a refrigerant circuit means pulling a vacuum deep enough to boil off any residual moisture and remove non-condensable gases, mainly air, that were introduced whenever the system was opened for repair or installation. The standard we measure against is micron level, not simply how many minutes the vacuum pump has run. A micron gauge measures vacuum in far finer detail than a standard refrigerant gauge can, and the accepted target for a properly evacuated residential system is typically 500 microns or lower, held steady after the pump is isolated, which confirms there's no active leak reintroducing air or moisture back into the circuit.
Moisture left in a refrigerant system is a serious problem beyond just reducing efficiency. Water reacts with refrigerant and oil to form acids that attack metal surfaces from the inside, and moisture can freeze at the metering device, particularly a TXV or fixed orifice, causing intermittent restriction that mimics a refrigerant charge problem. Non-condensable gases like air raise system pressure beyond what the refrigerant charge alone would produce, throwing off pressure-based diagnostics and reducing heat transfer efficiency at the condenser. Pulling a proper deep vacuum removes both problems at once, since moisture boils off as vapor at low pressure and gets carried out with the air by the vacuum pump.
We use a two-stage vacuum pump rated for the system size, connect through both service ports simultaneously with large-diameter hoses to reduce restriction, and monitor with a dedicated digital micron gauge placed at the far end of the system from the pump connection, not at the pump itself, since gauge placement at the pump can show a falsely deep vacuum reading that doesn't reflect conditions throughout the whole circuit. Central Texas's summer humidity means more atmospheric moisture is available to enter an open system during any repair than in a drier climate, and a rushed or shallow evacuation that might get away with it in an arid environment is more likely to leave problematic moisture behind here. We hold the final vacuum and watch for any rise in microns after isolating the pump, since a rising reading points to either a remaining leak or moisture still boiling off, and either condition means the evacuation isn't complete yet.
Deep Vacuum Questions, Georgetown TX
AC Not Cooling? Low Refrigerant?
EPA certified technicians. We find leaks, fix them, then recharge, in that order.