Monthly Checks
☐ Clean or replace accessible air filters
☐ Check that vents are clear and unobstructed
☐ Look for water leaks or unusual condensation
☐ Listen for unusual noises or vibrations
☐ Confirm that each unit is cooling correctly
☐ Record and report any error codes
Every Three to Six Months
☐ Inspect and clean indoor coils
☐ Remove dirt and debris from outdoor condenser units
☐ Check condensate drains for blockages
☐ Inspect pipework and insulation for damage
☐ Test thermostats and temperature controls
☐ Check for weak airflow or unpleasant smells
Professional Engineer Checks
☐ Check refrigerant levels and investigate possible leaks
☐ Inspect electrical connections and components
☐ Test fans, motors, capacitors and compressors
☐ Check system pressures and operating temperatures
☐ Clean coils and drainage systems thoroughly
☐ Test safety controls and overall performance
☐ Provide a service report and recommend any repairs
When to Call an Engineer
Contact a qualified air conditioning engineer if the system stops cooling, leaks water, trips the electrics, produces unusual smells or noises, or displays recurring error codes.
Businesses should keep a maintenance record for every system and arrange professional servicing at least once or twice a year. Systems used heavily throughout the year may require more frequent attention. A planned maintenance schedule can improve efficiency, extend equipment life and reduce the risk of costly emergency repairs.
