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.
Finding the Root Cause of a Frozen Coil
A frozen evaporator coil is always a symptom of an underlying problem, never a problem on its own, and the two broad categories of cause are restricted airflow and low refrigerant charge. Restricted airflow, from a dirty filter, closed supply registers, a failing blower motor, undersized return ductwork, or a coil already coated in dust, means insufficient warm air passes across the coil to keep its surface temperature above freezing, so condensation on the coil surface turns to ice instead of draining away. Low refrigerant charge, almost always from a leak somewhere in the sealed system, causes the remaining refrigerant to expand more aggressively at the metering device and run colder than designed, which has the same freezing effect through a different mechanism.
One pattern we see often in Georgetown during peak summer is homeowners closing supply vents in unused rooms to try to direct cooling where it's needed, or running the thermostat unusually low chasing comfort during a heat wave. Both reduce the total airflow the system needs to operate correctly, even though the system itself is otherwise healthy, and both can trigger coil freezing that has nothing to do with a mechanical fault. We always ask about recent changes to vents, filters, or thermostat settings as part of the diagnostic conversation, since sometimes the fix is adjusting how the system is being used rather than repairing a part.
Diagnosis requires letting the coil fully thaw first, running the fan only with the compressor off for an hour or more, since measurements taken through ice give unreliable readings. Once thawed, we check static pressure across the coil to assess airflow, inspect the filter and blower operation, and measure superheat and subcooling to evaluate refrigerant charge. If airflow is the culprit, repair might mean nothing more than a filter change and register adjustment, or it could mean duct correction or blower repair for a more serious restriction. If charge is low, we perform electronic leak detection to find the source before any refrigerant is added, since simply recharging a leaking system without repair means the coil will freeze again within weeks or months. We don't consider a frozen coil call complete until we've identified which category applies and addressed the actual cause, not just melted the ice and sent the system back into operation.
Frozen Coil Questions, Georgetown TX
AC Not Cooling? Low Refrigerant?
EPA certified technicians. We find leaks, fix them, then recharge, in that order.