Maintenance Guide
Keep your air conditioning system running efficiently with these professional tips
Why Regular Maintenance Matters in Singapore
Singapore's tropical climate places unique demands on air conditioning systems. High humidity, dust, and constant use mean that regular maintenance isn't just recommended—it's essential for system longevity, efficiency, and indoor air quality.
This comprehensive guide provides practical maintenance tips you can perform yourself, along with professional recommendations to keep your system operating at peak performance year-round.
Free Maintenance Checklist
Download our comprehensive 10-point maintenance checklist to keep track of essential tasks and maintenance schedules.
Monthly Checks
Essential tasks to perform every month for optimal performance
Filter Inspection and Cleaning
- Remove and inspect air filters for dust buildup
- Clean washable filters with mild soap and water
- Replace disposable filters if heavily soiled
- Ensure filters are completely dry before reinstalling
Visual System Check
- Check for unusual noises during operation
- Inspect for ice formation on coils
- Ensure vents are not blocked by furniture
- Monitor cooling performance and consistency
Drainage Check
- Inspect condensate drain for blockages
- Clear any visible debris from drain outlets
- Check for water leaks or stains
Quarterly Tasks
More thorough maintenance every three months
Deep Filter Maintenance
- Thoroughly clean all washable filters
- Replace all disposable filters regardless of appearance
- Clean filter housings and surrounding areas
- Check filter seals and gaskets
Outdoor Unit Care
- Clear vegetation and debris around condenser
- Gently clean condenser coils with water
- Check for bent fins and straighten if possible
- Inspect electrical connections for corrosion
Thermostat Calibration
- Test thermostat accuracy with separate thermometer
- Clean thermostat sensors and contacts
- Replace thermostat batteries if applicable
- Program seasonal settings for efficiency
Annual Deep-Clean
Comprehensive maintenance tasks for yearly service
Professional Service Requirements
- Schedule chemical wash cleaning service
- Professional refrigerant level check
- Complete electrical system inspection
- Compressor performance evaluation
System Performance Review
- Analyse energy consumption patterns
- Review maintenance logs and issues
- Plan for any necessary upgrades
- Update maintenance schedules
Professional Recommendation: Annual deep-cleaning and comprehensive inspection should be performed by certified technicians to ensure safety and warranty compliance.
Emergency Troubleshooting
Quick solutions for common air conditioning problems
System Won't Turn On
- Check circuit breakers and fuses
- Verify thermostat settings and batteries
- Ensure power supply is connected
- Check for tripped safety switches
Insufficient Cooling
- Check and clean air filters immediately
- Ensure all vents are open and unblocked
- Verify thermostat temperature settings
- Check for ice buildup on coils
Water Leaks
- Turn off system immediately if water is pooling
- Check condensate drain for blockages
- Clear visible obstructions from drain line
- Contact professionals for persistent leaks
Strange Noises
- Rattling: Check for loose panels or debris
- Squealing: May indicate belt or bearing issues
- Clicking: Often electrical connection problems
- Turn off system and call professionals for grinding noises
When to Call HVAC Heroes: If basic troubleshooting doesn't resolve the issue, or if you're uncomfortable performing any checks, contact our 24/7 emergency service immediately.
Emergency ContactPro Tips for Singapore's Climate
Combat Humidity
Run your AC on "dry" mode during less hot but humid days to remove moisture without overcooling, reducing energy consumption.
Fight Dust Buildup
Singapore's urban environment means more frequent filter changes. Check filters monthly and replace when they appear grey or clogged.
Optimal Temperature Settings
Set your thermostat to 24-26°C for the best balance of comfort and efficiency in Singapore's climate.
Smart Timing
Use programmable timers to avoid running AC during peak electricity rate hours (7pm-11pm) when possible.
Warning Signs That Require Professional Help
While regular DIY maintenance is important, some issues require immediate professional attention. Watch for these warning signs:
Immediate Professional Help Required
- Electrical burning smells
- Repeated circuit breaker trips
- Refrigerant leaks (sweet chemical smell)
- Excessive water leaks or flooding
- Complete system failure
Schedule Professional Service
- Rising energy bills without increased usage
- Inconsistent cooling between rooms
- Unusual noises that persist
- Ice formation on coils
- Poor air quality or odours
When DIY Isn't Enough
While regular maintenance can prevent many issues, Singapore's demanding climate means that professional servicing is essential for long-term system health. HVAC Heroes offers comprehensive maintenance contracts and emergency support to keep your system running optimally.