Mini Split Heat Pump Cleaning and Maintenance in Ville-Marie, Montréal
Discover how AirGreen’s expert team restored a mini split heat pump to peak performance with our professional cleaning service in Ville-Marie, Montréal. Experience cleaner air and energy savings today!

Take a tour of the installation
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.
Why Regular Maintenance of Mini Split Heat Pumps is Crucial for Efficiency and Longevity
At AirGreen, we understand that the key to maintaining an efficient and long-lasting heat pump system is regular cleaning and maintenance. Recently, we completed a comprehensive cleaning and maintenance service for a Mini Split / Wall-Mounted Heat Pump in Ville-Marie, Montréal, and we’re excited to share the details of this essential service.
Our Approach to a Professional Mini Split Cleaning
When we arrived at the customer’s location, we could immediately see that the heat pump needed some tender loving care. Over time, even the best heat pumps accumulate dust, grime, and mold, which can seriously impact their performance. Here’s a breakdown of how we approached this job to ensure the unit would be running like new by the time we were finished.
1. Initial Assessment and Inspection
The first step in any maintenance job is to thoroughly inspect the unit. We started by examining both the indoor and outdoor components of the heat pump. The interior unit showed signs of dust accumulation and mold growth around the coils and filters. This is a common issue that not only reduces efficiency but also poses health risks as it can circulate allergens into your living space.
2. Comprehensive Cleaning of the Indoor Unit
The indoor unit, the heart of the mini split system, requires meticulous attention. We removed the cover and filters and began the deep cleaning process. Here’s how we tackled it:
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Filter Cleaning: The filters were heavily clogged with dust, which can restrict airflow and reduce the efficiency of the heat pump. We cleaned and sanitized them, ensuring they were free of any contaminants.
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Coil Cleaning: The evaporator coils inside the unit were covered in grime, which acts as insulation and prevents proper heat transfer. We used a specialized cleaning solution to remove the buildup, enhancing the unit's efficiency and ensuring optimal performance.
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Blower Wheel Cleaning: The blower wheel, responsible for circulating air, was also cleaned to ensure smooth operation and maximum airflow.
By the time we were done, the indoor unit looked and functioned like it was brand new.

3. Outdoor Unit Cleaning and Maintenance
The outdoor unit was equally important in this maintenance job. We carefully removed debris, dust, and dirt that had accumulated around the condenser coils and fan blades. By doing so, we ensured that the system could expel heat efficiently, preventing potential overheating issues.
4. Drain Line Cleaning
Over time, the drain line can become blocked with dirt and algae, leading to water leaks and potential damage to your home. We flushed out the drain line, ensuring that water could flow freely and the unit could operate efficiently.
Benefits of Our Professional Mini Split Cleaning Service
Many customers don’t realize just how important regular maintenance is for their heat pump system. By cleaning this unit in Ville-Marie, we ensured:
- Improved Efficiency: The unit can now operate at peak performance, resulting in lower energy bills for the homeowner.
- Healthier Air Quality: Removing dust, mold, and bacteria ensures the air circulated by the heat pump is clean and safe to breathe.
- Extended Lifespan: Regular maintenance helps prevent wear and tear, prolonging the life of the heat pump and saving the customer money in the long run.
- Quieter Operation: A clean and well-maintained heat pump operates more quietly, enhancing comfort in the home.
Why Choose AirGreen for Your Heat Pump Cleaning and Maintenance?
We are proud to serve the Montréal, Laval, Longueuil, North Shore, and South Shore regions, offering top-quality HVAC services. With years of experience, our team of experts knows exactly how to handle all types of mini split systems, ensuring they operate efficiently and effectively.
Our Cleaning Process Includes:
- Thorough inspection and assessment
- Cleaning and sanitizing all components
- Checking for any potential issues that could cause problems down the line
- Providing expert advice on maintaining your system between professional cleanings
Common Signs That Your Mini Split Needs Cleaning
- Reduced Airflow: If your unit isn’t blowing as strongly as it used to, it’s a sign that the filters or coils may be clogged.
- Increased Energy Bills: A dirty heat pump has to work harder, which means it uses more energy, leading to higher bills.
- Unpleasant Odors: Dust and mold buildup can cause bad smells when the unit is running.
- Unusual Noises: Rattling or buzzing noises often indicate that something inside the unit needs cleaning or adjustment.
The Impact of Regular Maintenance on Energy Efficiency
It's a proven fact that a clean mini split system can save you up to 30% on your energy bills. This is because a clean unit doesn't have to work as hard to circulate air, which means it uses less electricity. For our client in Ville-Marie, this cleaning not only restored their unit's efficiency but also set them up for significant energy savings in the future.
Preventative Measures and Tips to Keep Your Mini Split Clean
While we recommend professional cleaning at least once a year, there are steps you can take to keep your mini split in top condition between visits:
- Clean the Filters Monthly: Simply remove them and rinse with warm water.
- Check the Outdoor Unit: Ensure it’s free of leaves, grass, and other debris.
- Keep the Surrounding Area Clean: Dust and dirt can quickly accumulate, so keep the area around your indoor unit tidy.

Customer Satisfaction – Our Top Priority
At AirGreen, we pride ourselves on delivering excellent service, and this recent project in Ville-Marie was no exception. Our team left the client’s mini split looking and functioning as though it had just been installed. We take great care to ensure every detail is attended to, and our customers can feel the difference in their home environment after we’ve finished the job.
Get in Touch with AirGreen Today!
If you’re noticing reduced efficiency or unusual odors from your mini split system, don’t wait until it becomes a bigger problem. Reach out to AirGreen for a professional cleaning and maintenance service. We guarantee you’ll notice an improvement in your heat pump’s performance, and you’ll enjoy cleaner, healthier air in your home.
The big day, step by step
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.
Your own project, step by step
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.
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).
