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.
When Standard Cleaning Isn't Enough
A routine condenser coil cleaning uses a coil-safe cleaner and low-pressure rinse to remove surface dirt, grass clippings, and light debris from the fins. An acid wash is a different, more aggressive process reserved for coils with heavy buildup that a standard cleaning can't touch, mineral scale deposits, oxidation, or years of accumulated grime that has bonded to the aluminum fins and copper tubing. We reach for an acid wash when a coil's airflow and heat rejection capacity have dropped noticeably despite regular cleaning, or when a visual inspection shows a white or gray chalky film across the fin surface that a hose and coil cleaner won't lift.
The process uses a specially formulated acidic coil cleaner, typically a controlled-strength solution designed for HVAC coils rather than an industrial-grade acid, applied to the coil and allowed to dwell so it can break down mineral and oxide buildup at a chemical level. We protect surrounding landscaping, the compressor, electrical components, and painted surfaces before application, since the chemical needs to be contained to the coil itself. After the dwell time, we rinse thoroughly with fresh water from the inside out relative to airflow direction, which pushes loosened debris out rather than deeper into the coil, and we neutralize and rinse a second time to make sure no acidic residue remains that could continue attacking the aluminum fin stock or the coil's protective coating over time.
Central Texas's well water in outlying parts of Williamson County tends to run harder than municipal supply in some neighborhoods, and homes with irrigation systems or sprinkler heads positioned near the outdoor unit see mineral deposits build up on the coil faster than homes without that exposure. We also see heavier scale buildup on units that have gone several years without any coil service at all, since standard cleaning becomes far less effective once scale has had time to bond to the fin surface. An acid wash restores heat transfer capacity that's been quietly lost, often improving measured subcooling and system capacity noticeably, but it's not something we recommend on every visit. Coils with thin or already-corroding fin stock can be damaged by repeated acid washing, so we assess coil condition first and recommend replacement instead when the coil is too far gone for chemical cleaning to make sense.
Coil Acid Wash Questions, Georgetown TX
AC Not Cooling? Low Refrigerant?
EPA certified technicians. We find leaks, fix them, then recharge, in that order.