Thorough Cleaning and Maintenance of a Wall-Mounted Heat Pump in Ahuntsic-Cartierville, Montréal
Witness how we transformed a dusty heat pump in Ahuntsic-Cartierville into a clean, efficient machine, enhancing comfort and air quality for our happy customer!
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Revitalizing Indoor Comfort with Our Professional HVAC Services
At AirGreen, we believe that clean air and energy efficiency go hand in hand. Regular maintenance of your HVAC system is essential to achieving optimal performance, especially for wall-mounted heat pumps that work year-round to regulate indoor temperatures. In this article, we’ll take you through a recent maintenance job we completed in Ahuntsic-Cartierville, Montréal, where we brought a heavily soiled heat pump back to life, leaving our customer extremely satisfied.
The Importance of Regular Heat Pump Maintenance
Wall-mounted heat pumps, also known as mini-split systems, are popular in homes across Montreal due to their efficiency and flexibility. However, without proper maintenance, these units can accumulate dust, debris, and contaminants that significantly reduce their effectiveness. Not only can this lead to higher energy bills, but it can also impact indoor air quality. This particular unit was overdue for a professional cleaning, and we were excited to restore it to peak condition.
The Initial Condition: Facing a Dirty Heat Pump
Upon arrival at our client’s home in Ahuntsic-Cartierville, we noticed the signs of a neglected heat pump right away. The unit’s filters were caked with dust, and the air was struggling to pass through. Such buildup can strain the compressor and other internal components, leading to inefficiency and potentially costly repairs if left unattended. The system was barely cooling the space, and the homeowner reported a noticeable decrease in performance over time.
Step 1: Preparing for a Detailed Cleaning
Before beginning, we took the necessary steps to protect the surrounding area. Our technicians donned protective gear and carefully covered nearby furniture to ensure that no dust or cleaning solution would soil the homeowner's belongings. Attention to detail is something we pride ourselves on at AirGreen; ensuring cleanliness and precision at every job site is part of our commitment to quality.
Step 2: Deep Cleaning the Filters
The first step in our maintenance process was to remove the dirty air filters. As seen in the image, these filters were nearly clogged with a thick layer of dust. We used specialized cleaning agents and tools to meticulously wash away the dirt and debris, leaving the filters looking as good as new. This step is crucial, as clean filters allow for optimal airflow, enabling the heat pump to work efficiently.
Why Filter Maintenance Matters
- Improved Air Quality: Dusty filters can recirculate contaminants back into the home, impacting the air quality.
- Energy Efficiency: Clogged filters force the unit to work harder, leading to higher energy consumption.
- Prolonged Equipment Life: Clean filters reduce strain on the system, helping to avoid unnecessary wear and tear.
Step 3: Verifying and Adjusting Freon Levels
Once the filters were spotless, our technicians checked the Freon levels to ensure the heat pump was charged correctly. Low Freon can lead to inadequate cooling and increased power usage, as the system has to work harder to maintain the desired temperature. After a thorough check, we determined the unit was slightly undercharged and carefully topped it off, bringing it back to the manufacturer’s specifications.
Why Checking Freon Levels is Essential
- Optimal Cooling Performance: Correct Freon levels allow the heat pump to cool the room effectively.
- Energy Efficiency: Adequate Freon levels help the unit operate within its designed efficiency range, reducing energy costs.
- Preventative Care: Ensuring proper refrigerant levels can prevent more severe issues down the line.
Step 4: Cleaning the Evaporator Coil
Over time, the evaporator coil can become coated with dust and grime, further restricting airflow and diminishing performance. In this case, the coil was visibly dirty, which was likely contributing to the homeowner’s complaints about reduced efficiency. We used a coil cleaner to dissolve and remove all buildup, ensuring that the coil was pristine and ready to perform its role effectively.
Step 5: Reassembling and Testing the Unit
Once all components were thoroughly cleaned and inspected, we reassembled the unit and conducted a full system test. This is a critical step to confirm that everything is working correctly and that the unit is cooling efficiently. The difference was noticeable immediately – the heat pump was now blowing clean, cold air at full capacity.
Customer Satisfaction: A Job Well Done
Our customer was thrilled with the results. Not only did we restore the heat pump to optimal functionality, but we also left the work area spotless. The client remarked on the professionalism and thoroughness of our team, and they expressed relief at knowing their heat pump was once again performing at its best. We love hearing feedback like this, as it reinforces our commitment to delivering top-notch HVAC services across Montréal and surrounding areas.
Key Benefits of AirGreen’s Heat Pump Maintenance Services
- Comprehensive Cleaning: We leave no stone unturned, ensuring every component is clean and functioning optimally.
- Energy Savings: Clean systems operate more efficiently, which can lead to lower energy bills.
- Prolonged Equipment Lifespan: Regular maintenance helps prevent wear and tear, extending the life of your HVAC system.
- Improved Indoor Air Quality: A well-maintained system filters out contaminants, contributing to a healthier indoor environment.
Why Choose AirGreen for Your HVAC Needs in Montréal?
AirGreen’s team of highly trained technicians is dedicated to providing exceptional HVAC maintenance and repair services. From heat pumps to air conditioners, we handle every type of unit with precision and care. With a focus on customer satisfaction, we ensure that our clients receive the best possible service, every time.
When you choose AirGreen, you’re choosing a company that understands the unique HVAC needs of Montréal’s climate. We’re here to ensure that your home stays comfortable, regardless of the weather outside.
Preventative Maintenance: A Smart Investment
Regular maintenance is not just about fixing problems; it's about preventing them from occurring in the first place. By scheduling periodic cleanings and inspections, you can avoid the costly repairs that often come from neglect. At AirGreen, we offer maintenance plans that make it easy and affordable to keep your HVAC system in prime condition year-round.
Preventative Maintenance Benefits:
- Reduced Repair Costs: Addressing small issues before they escalate can save you significant money in the long run.
- Consistent Comfort: Regular maintenance helps ensure that your system is always performing at its best.
- Peace of Mind: Knowing your system is in top shape allows you to relax, knowing your home’s climate is in good hands.
Get in Touch with AirGreen for Your Next HVAC Maintenance
If you’re looking to breathe new life into your HVAC system, give us a call. We proudly serve Montréal, Laval, Longueuil, and surrounding areas, providing professional and reliable HVAC maintenance and repair services. Let us help you improve the efficiency and lifespan of your system with our comprehensive maintenance solutions.
How the job unfolds
The main steps of this kind of job at AirGreen. Every house has its quirks: the estimate brings them out.
The type of unit, its age and what you have noticed: noise, smell, water, lower output.
Filters, coils or core, drain, fans, connections and clearances.
Dirty parts are cleaned following the manufacturer's recommendations.
Operation, water drainage, noise and airflow.
What was done, what to watch and when to come back.
- The appointmentThe type of unit, its age and what you have noticed: noise, smell, water, lower output.
- InspectionFilters, coils or core, drain, fans, connections and clearances.
- CleaningDirty parts are cleaned following the manufacturer's recommendations.
- ChecksOperation, water drainage, noise and airflow.
- The reportWhat was done, what to watch and when to come back.
What we check on a job like this one
Each number is a point we check on site. Switch between summer and winter to watch air and heat move.
In summer, the outdoor unit rejects the house's heat outside.
Generic illustration of this type of installation, not a survey of this job site. Tap a number.
Mounted level on a wall plate, high enough for the air to reach the whole room, with enough space around it to slide the filters out easily.
The refrigerant lines, the communication cable and the drain go through the wall in a single opening, sealed against water, cold air and insects.
Two insulated copper pipes connect the two units. Outside, a line cover can protect them from sun, knocks and weather.
A shut-off switch near the outdoor unit isolates it safely for service. It must stay accessible at all times.
The compressor and the fan. In heating mode it captures heat from the outdoor air, even in winter, and moves it inside.
On the ground or on the wall, it keeps the unit above accumulated snow. The unit stays clear and defrost water can drain away.
The fan needs to blow freely. Storage, a fence or a wall too close, and efficiency drops while noise goes up.
Good habits, once the unit is in place
Six simple habits that keep the unit going. Your list stays on this device.
What to do, season by season
Three habits per season for this unit. They take a few minutes and prevent many calls.
- Clean the indoor unit's filters.
- Clear leaves and debris left on the outdoor unit by winter.
- Test cooling before the first hot days.
- Clean the filters more often when the unit runs a lot.
- Keep plants away from the outdoor unit.
- Check that no water drips from the indoor unit.
- Rake the leaves around the outdoor unit.
- Test heating before the first cold days.
- Book periodic maintenance before winter.
- Keep snow away from the stand and the front of the unit.
- Let the unit defrost: it is normal.
- Never hit the ice on the fins; call us if the unit stays iced up.
The right pages, at the right time
Four statements: true or false?
It all comes down to details you have just seen.
1. In heating mode, the outdoor unit can produce water.
During defrost cycles. That water must drain away without forming ice.
2. You pick the capacity with a simple square-footage rule.
Windows, insulation, orientation and how the room is used all count. Capacity is chosen on site.
3. A multi-zone connects several indoor heads to a single condenser.
One head per room, all on the same condenser. Each room keeps its own temperature.
4. The disconnect can sit behind the patio furniture.
It must stay accessible: it is what shuts the unit off for service.
0 / 4 right answers
What people ask us about this kind of work
How often should maintenance be done?
Does maintenance improve performance?
Does a wall-mounted heat pump heat in winter?
Wall-mounted or multi-zone: how do I choose?
Where does the outdoor unit go?
Are there grants?
Do I need a permit?
Does AirGreen hold the required licences?
Is the estimate free?
No question matches. Write to us: we answer.
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Text and photo: a real AirGreen Climatisation & Chauffage job. The diagrams are generic illustrations of the type of installation, not a survey of this job site. Sources of the added figures: airgreen.ca product pages (NEEP / AHRI performance), Hydro-Québec (Heat pumps page, LogisVert, read on 13 October 2026), Régie de l’énergie (rate D as of 1 April 2026).

1 comment
Bonjour,
L’unité intérieure de mon climatiseur a coulé sur le mur sur lequel elle est fixée. Petite coulisse bleutée…
Pouvez-vous intervenir ? C’est un condo.
J’habite Ahuntsic, rue Basile-Routhier.