How to clean your pollen-clogged heat pump this fall
Fall in Quebec brings its magnificent colors, but also its share of challenges for your heat pump. Between late pollen, dust raised by the winds and the first leaves that fall, your heating and air conditioning system quickly accumulates dirt that interferes with its proper functioning.
Proper cleaning at this time of year isn't just about aesthetics. This is an essential step in maintaining the energy efficiency of your appliance, maintaining the air quality in your home and extending its lifespan. A well-maintained heat pump can do save up to 15% on your electricity bills while offering you optimal comfort during the cold months ahead.

Why is pollen a problem with your heat pump?
Fall pollen, while invisible to the naked eye at times, builds up insidiously in your system. It is deposited first on the internal filters, reducing airflow and forcing your heat pump to work harder to maintain the desired temperature.
Even more problematical, The pollen then sticks to the outer coils when mixed with ambient humidity. This sticky layer prevents efficient heat exchange, significantly increases energy consumption, and can even cause premature failures. The fans, which are also affected, lose efficiency and sometimes generate abnormal noises.

DIY cleaning: the simple steps to follow
1. Safety first: turn off the power supply
Before handling, switch off your heat pump via the thermostat and turn off the power supply to the main panel. This precaution is non-negotiable for your safety. <

2. Clean the internal filters
Carefully remove the filters from the indoor unit. If they are washable, rinse them off in warm water with mild soap. For disposable filters, simply replace them.
Pro tip: If you have pets, change or clean your filters every 6 weeks instead of the usual 3 months. Animal hair combined with pollen creates a particularly obstructive mixture.
Allow washable filters to dry completely (24 hours minimum) before putting them back in place. Moist filters encourage mold growth.

3. Vacuum outdoor grills
Use a vacuum cleaner with a brush tip to gently clean the outdoor unit grills. Vacuum from the inside out so you don't push debris deeper into the device.

4. Check and clean the coils
Examine the coils (metal fins) on the outdoor unit. If you see a build up of pollen or dust, rinse them gently with a garden hose, always from the inside out. Avoid high-pressure jets that could damage the delicate fins.
Important: Never use corrosive chemicals or degreasers. Clear water is sufficient in most cases.
5. Clear the outside area
Remove dead leaves, branches, and other debris within 60 cm of the outdoor unit. Good air circulation is crucial for the optimal performance of your heat pump.
Pro tip: Install appropriate winter protection after cleaning, but make sure it allows adequate airflow to the sides.

When should you call in a professional?
Some situations require the intervention of a qualified technician. Contact the experts at Pureclim if you observe:
- Pollen strongly stuck to the coils that resists rinsing
- Persistent odors even after cleaning
- Abnormal noises (squeaks, excessive vibrations)
- A significant decrease in efficiency despite recent cleaning
- Ice that forms abnormally on the outdoor unit
Our team also recommends an annual professional interview, ideally in the fall. This comprehensive inspection includes checking the refrigerant level, testing all electrical components, calibrating the thermostat, and thorough cleaning with specialized equipment.
This preventive maintenance makes it possible to detect minor problems before they become expensive and ensures optimal operation throughout the winter.
A small effort, big benefits
Regular cleaning of your heat pump, especially after the fall pollen season, guarantees:
- Substantial energy savings all winter
- Cleaner and healthier indoor air
- An extended lifespan of your equipment
- Fewer emergency repairs in the middle of winter
- Optimal comfort in every room in your home
Fall is the perfect time to take care of your heat pump before the cold weather hits. These few simple actions will save you a lot of hassles and unexpected expenses.
Do you need professional help? The Pureclim team is there to support you. Our certified technicians offer a complete maintenance service adapted to Quebec conditions. Contact us now to schedule your fall maintenance and start winter with peace of mind.

