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 Copper Lines Ice Over
Ice forming on the copper suction line running from your outdoor unit into the house, or on the copper lines at the indoor coil, is a symptom, not a standalone problem. The suction line carries cold, low-pressure refrigerant vapor back to the compressor. Under normal operation it should feel cold and may sweat with condensation, but it should not accumulate ice. When ice forms, it means refrigerant is entering the suction line at an abnormally low temperature and pressure, which happens for two main reasons: the refrigerant charge is low, so the remaining refrigerant expands more aggressively and drops below freezing, or airflow across the indoor evaporator coil is restricted, so heat isn't being absorbed properly before the refrigerant leaves the coil.
Airflow restriction is the more common cause in our experience and can come from a clogged air filter, a dirty evaporator coil, closed or blocked supply registers, a failing blower motor, or a return duct that's undersized or obstructed. Low refrigerant charge almost always means there's a leak somewhere in the circuit rather than refrigerant simply running low on its own, since it's a sealed system. We diagnose which cause applies by measuring static pressure across the coil, checking the air filter and blower operation, and measuring superheat and subcooling to determine whether the charge is correct. Guessing and just adding refrigerant to a system that's actually got an airflow problem will not fix the ice, and it risks flooding liquid refrigerant back to the compressor once the ice eventually melts and the restriction clears temporarily.
Repair depends on the root cause. Airflow problems mean coil cleaning, filter replacement, duct correction, or blower repair. Charge problems mean leak detection and repair followed by a proper recharge measured against manufacturer subcooling and superheat targets, not simply topping off refrigerant to a gauge reading. We always let the ice fully melt before diagnosing, running the system with the compressor off and fan on can help, because attempting pressure and temperature measurements through ice gives false readings. Georgetown's cooling season runs long and hot, often six months or more of near-daily operation, which means a system with a marginal airflow or charge issue that might go unnoticed with light seasonal use here runs continuously enough that the underlying problem surfaces as visible ice fairly quickly.
Frozen Copper Line Questions, Georgetown TX
AC Not Cooling? Low Refrigerant?
EPA certified technicians. We find leaks, fix them, then recharge, in that order.