Comprehensive Mini Split Maintenance Service in Montréal
Discover how a simple cleaning transformed a dirty, inefficient mini split into a fresh, high-performing unit. Our customer was thrilled with the results!
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.
An Unexpected Turnaround for a Mini Split Unit in Montréal
At AirGreen, we know how important it is to maintain a well-functioning mini split unit, especially in a bustling city like Montréal. Recently, we were called in to assist a customer whose mini split had been neglected for quite some time. The unit was not performing optimally, and the customer reported a strong odor coming from it, combined with reduced efficiency. Our team quickly discovered the root of the problem: dirt and grime had accumulated in the system, affecting both its performance and air quality.
A Dirty Mini Split Can Be a Hidden Danger
The mini split system we encountered was in bad shape. The photos above illustrate just how much dirt and dust had built up on the filters and internal components. These systems, designed to keep homes cool and comfortable, can suffer significantly when not properly cleaned. Not only do dirty mini split units fail to cool effectively, but they can also pose health risks. Poor indoor air quality, strange smells, and even increased energy bills are all common problems associated with neglected HVAC systems.
In this case, our client had noticed a consistent odor that made the space uncomfortable to be in. Upon closer inspection, we could see that the filters were clogged with debris, reducing the airflow and forcing the system to work much harder than necessary. The internal parts were also affected, leading to decreased efficiency and a noticeable dip in performance.
The Cleaning Process: From Dusty to Spotless
Step 1: Disassembling the Unit Before getting to work, we took great care in disassembling the mini split unit. This process is essential to ensure that every component is properly cleaned, without damaging the internal systems. Our experienced technicians removed the filters, louvers, and panels, revealing just how much dirt had accumulated over time.
Step 2: Cleaning the Filters The filter, as seen in the photos, was covered in a thick layer of dust and grime. This level of buildup significantly blocks airflow and contributes to the foul smell the client was experiencing. We thoroughly cleaned the filters, restoring them to their original condition, and ensured they were free from any obstructions that could impair functionality.
Step 3: Deep Cleaning the Internal Components Beyond just cleaning the filters, we meticulously addressed the interior components of the system. The evaporator coils, blower wheel, and drainage system were all carefully scrubbed and cleaned, removing all traces of dust and debris. These components are vital for efficient cooling, and ensuring they are clean is key to improving the overall performance of the unit.
Step 4: Sanitizing the System Given the unpleasant odor the customer had reported, we also performed a thorough sanitation of the entire system. By using specialized cleaning agents, we were able to eliminate the bacteria and mold that had likely built up due to moisture and dirt, ensuring the air flowing through the unit was clean and odor-free.
The Result: A Happy Customer and a Refreshed Mini Split
Once we completed the cleaning process, the transformation was remarkable. Not only was the mini split unit visibly cleaner, but it also operated much more efficiently. The foul odor was completely eliminated, and the airflow was restored to optimal levels. Our customer was thrilled with the results, noting how the space felt cooler and fresher almost immediately.
The benefits of regular cleaning and maintenance are clear: not only does it improve air quality, but it also prolongs the lifespan of your mini split system and lowers your energy bills. After this service, the customer remarked on how much quieter and smoother the unit was running—two clear indicators that it was now working at its best.
Why Choose AirGreen for Mini Split Cleaning in Montréal?
At AirGreen, we take pride in our ability to deliver high-quality service to all of our clients in Montréal, Laval, Longueuil, and the surrounding areas. This recent service call highlights our commitment to professionalism and attention to detail. Here’s why customers choose us for their HVAC maintenance needs:
- Experienced Technicians: Our team is highly trained and experienced in handling all types of mini split units, from installation to deep cleaning.
- Comprehensive Cleaning Process: We go beyond just cleaning the filters; we meticulously clean every part of the unit to ensure it's running efficiently and providing clean, fresh air.
- Customer Satisfaction: As seen in this case, our customer was extremely happy with the results of our cleaning service. We aim to provide that level of satisfaction with every job we do.
- Quick Response Time: We understand the urgency of HVAC issues, especially when they affect your comfort at home. Our team is quick to respond and ready to tackle any issue you may be facing.
- Affordable Prices: We offer competitive rates for our cleaning and maintenance services, ensuring that keeping your system in top shape doesn’t break the bank.
How Often Should You Clean Your Mini Split?
A question we often get from clients is how frequently they should have their mini split system cleaned. The answer depends on several factors, including usage and environmental conditions. For homes located in dustier areas or where the system is used frequently, we recommend cleaning every six months. If your mini split is used less frequently, an annual cleaning should suffice to keep it running efficiently.
Book Your Mini Split Cleaning with AirGreen Today
If you're noticing strange smells, reduced cooling power, or an increase in your energy bills, it might be time to have your mini split cleaned. Just like our customer in Montréal, you too can benefit from our expert maintenance services. Don’t wait until the system starts to fail—regular maintenance is the key to prolonging its lifespan and ensuring optimal performance year-round.
At AirGreen, we’re proud to serve clients across Montréal, Laval, Longueuil, the North Shore, and South Shore. Our team is ready to help you with all your HVAC needs, from mini split cleaning to system installation. Contact us today to schedule a service call and experience the AirGreen difference for yourself!
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.
More jobs to see, near you
By town, by equipment or by region: browse more than 4,700 published projects.
Each dot: a town where AirGreen has published projects. The glowing dot: this job.
Every house has its constraints. We see them before we install.
The on-site estimate is free and the quote follows within 24 hours.
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
J’aimerais avoir une soimission pour le nettoyage de deux mini split ,9000 et 12000 btu