As the summer months approach in Perth, ensuring your air conditioner is ready to combat the soaring temperatures is essential. A well-maintained system not only provides comfort but also operates more efficiently, saving you money on energy bills. Whether you’re considering a new air conditioning installation in Perth or prepping your existing unit, this pre-season checklist will help you stay cool all summer long.

Pre-Season Air Conditioning Checklist

  1. Clean or Replace Air Filters
    • Why: Dirty filters restrict airflow, reducing efficiency and air quality.
    • How: Locate your unit’s filter compartment, remove the old filter, and either clean it (if reusable) or replace it with a new one.
  2. Inspect the Thermostat
    • Why: A faulty thermostat can lead to inconsistent temperatures and higher energy usage.
    • How: Test your thermostat by setting it to a few degrees cooler and observing if the air conditioner responds appropriately. Consider upgrading to a programmable or smart thermostat for better control.
  3. Clear Debris Around Outdoor Units
    • Why: Leaves, dirt, and other debris can obstruct airflow and reduce efficiency.
    • How: Clear at least two feet of space around the unit, and gently clean the exterior fins with a soft brush.
  4. Check Electrical Connections
    • Why: Loose or corroded connections can cause operational issues or even pose safety risks.
    • How: Turn off the power to the unit and inspect all visible wiring for signs of wear or damage. If unsure, consult a professional technician.
  5. Examine Ductwork for Leaks
    • Why: Leaky ducts can result in up to 30% energy loss.
  1. How: Look for visible cracks or gaps in accessible ductwork and seal them with foil-backed tape or duct sealant.
  2. Ensure Proper Refrigerant Levels
    • Why: Low refrigerant can lead to decreased cooling capacity and potential damage to the compressor.
    • How: Since handling refrigerant requires certification, schedule a professional maintenance check to measure and top up levels if necessary.
  3. Test the Condensate Drain
    • Why: A clogged drain can cause water damage and increase indoor humidity.
    • How: Locate the drain line and ensure it is clear by flushing it with a mixture of bleach and water.
  4. Inspect Fan Blades and Motors
    • Why: Worn or damaged components can reduce efficiency and lead to breakdowns.
    • How: With the power off, check the fan blades for damage and ensure they spin freely. Listen for unusual noises when the unit is running.
  5. Clean Indoor Vents and Registers
    • Why: Dust and debris can block airflow and decrease air quality.
    • How: Remove vent covers and clean them with warm soapy water. Vacuum inside the ducts as far as possible.
  6. Schedule a Professional Tune-Up
    • Why: A qualified technician can identify and fix issues that may not be apparent to the untrained eye.
    • How: Book a service appointment with a reputable air conditioning installation Perth company to ensure your system is in top condition.

Additional Tips for Optimal Performance

  • Upgrade Insulation: Proper home insulation reduces the workload on your air conditioner.
  • Use Ceiling Fans: Circulating air can make rooms feel cooler, allowing you to set the thermostat higher.
  • Install Window Treatments: Blinds or curtains block out heat from the sun, keeping indoor temperatures lower.

Why Regular Maintenance Matters

Routine maintenance extends the lifespan of your air conditioning system and ensures it operates at peak efficiency. Neglecting these tasks can lead to unexpected breakdowns, higher energy bills, and costly repairs. By following this checklist, Perth homeowners can enjoy a comfortable and worry-free summer.

Considering a New Installation?

If your air conditioner is old or frequently needs repairs, it might be time to consider a new air conditioning installation in Perth. Modern systems are more energy-efficient and offer advanced features like smart home integration and improved air purification.


Preparing your air conditioner for the Perth summer doesn’t have to be daunting. With this comprehensive checklist, you can address most of the essential maintenance tasks yourself. However, don’t hesitate to seek professional assistance for more complex issues or for a thorough system evaluation. Stay proactive, and ensure your home remains cool during the hot months ahead.

author avatar
Daniel Gilpin
Daniel is the founder of Gildan Air & Electrical, HVAC & Air Conditioning Contractor for Perth and surrounds.