Why Summer Servicing Matters
Peak cooling season puts maximum load on AC systems. A pre-season service catches refrigerant loss, blocked drainage, and dirty coils before they cause callouts — and keeps you compliant with F-gas record-keeping obligations.
1. Refrigerant Charge Check
- Connect manifold gauges and verify suction and discharge pressures against manufacturer data
- Check subcooling and superheat values
- Any top-up must be logged in your F-gas records — see our
F-Gas Compliance Checklist
2. Coil Condition & Cleaning
- Inspect evaporator and condenser coils for fouling, corrosion, or fin damage
- Apply appropriate coil cleaner (foaming for evaporator, alkaline for condenser)
- Rinse thoroughly and allow to dry before restart
- Browse our
Chemicals & Maintenance collection
3. Condensate Drainage Inspection
- Flush condensate tray and drain line with clean water
- Check condensate pump operation — lift test and float switch function
- Replace pump if max head is marginal for the installation
- See our
Condensate Pump Selection Guide
4. Leak Detection
- Perform electronic leak detection across all joints, service valves, and flare connections
- Follow up any suspect areas with UV dye if required
- Log all findings — any leak above threshold must be repaired before recharging
- Browse our
Leak Detection collection
5. Nitrogen Pressure Test Sign-Off (Post-Repair)
- If any joints were disturbed, pressure test with OFN before recharging
- See our full guide:
Nitrogen Pressure Testing for HVAC Systems
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