Job sheet · Maintenance

Expert Cleaning and Maintenance of Mini Split Systems in Dollard-des-Ormeaux

Is your mini split system underperforming? Learn how our expert team at AirGreen transformed a neglected unit in Dollard-des-Ormeaux, improving air quality, efficiency, and comfort in just one visit!

By AirGreen Climatisation & Chauffage Admin7 min read
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Expert Cleaning and Maintenance of Mini Split Systems in Dollard-des-Ormeaux
Expert Cleaning and Maintenance of Mini Split Systems in Dollard-des-Ormeaux
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The article, chapter by chapter

A Sparkling New Beginning for Your Mini Split System: AirGreen's Comprehensive Cleaning Services

At AirGreen, we take pride in delivering exceptional HVAC services across Montreal, Laval, Longueuil, North Shore, and South Shore. This time, we embarked on an essential task in Dollard-des-Ormeaux, where we were called upon to give a wall-mounted mini split system a complete cleaning and maintenance makeover. In this article, we dive into the intricate process and share the value of routine upkeep for your mini split system.

Why Cleaning Your Mini Split is Crucial

Let’s face it: whether it’s summer or winter, your mini split system works tirelessly to keep your home comfortable. However, over time, dust, debris, and mold can accumulate inside the unit. This buildup affects not only the air quality but also the efficiency of the system. In this particular case, the homeowner had started to notice uneven cooling and musty odors, clear indicators that the unit was overdue for a deep clean.

The Installation: A Quick Overview

In Dollard-des-Ormeaux, we found a relatively new wall-mounted heat pump system that had not undergone a thorough cleaning since installation. Like many homeowners, our client was unsure about the necessity of regular maintenance until the signs became too obvious to ignore.

Our team arrived prepared to disassemble the unit, clean the coils, remove any microbial buildup, and restore its functionality. In addition, we took a good look at the drain pan and filters, areas that often get neglected during DIY cleaning attempts but are crucial for maintaining efficiency and indoor air quality.

The Process: From Dusty to Pristine

  1. Initial Inspection: The first thing we did was inspect the entire system to assess the level of dirt accumulation and spot any potential issues. It’s common for mini splits to collect dust on their fins and blower wheel, which can significantly reduce airflow and efficiency.

  2. Disassembly and Deep Cleaning: Once the inspection was complete, we carefully disassembled the mini split unit to access the internal components. Deep cleaning of the evaporator coils and blower wheel was essential, as these are the most critical components that impact performance. We used specialized cleaning agents to ensure that all dust, mold, and debris were removed, leaving the system as good as new.

  3. Filter Replacement: After cleaning the internal parts, we turned our attention to the filters. We replaced the filters with high-efficiency ones that not only trap finer dust particles but also improve the system’s airflow, helping it run smoothly and more efficiently.

  4. Coil and Fin Cleaning: The fins and coils of a mini split unit are essential for effective heat exchange. Dirty coils and fins can force your system to work harder, reducing its overall efficiency. We ensured these were carefully cleaned and restored to their original state.

  5. Drain Pan and Line Cleaning: One of the major culprits behind leaks in mini split systems is a clogged drain line. We thoroughly cleaned the drain pan and ensured the drain line was clear to prevent any future issues.

  6. Reassembly and Testing: Finally, we reassembled the unit and ran a complete system test to ensure everything was functioning optimally. The mini split was now operating at peak efficiency, and the customer immediately noticed an improvement in air quality and overall comfort.

Understanding the Machine: The Backbone of Comfort

The mini split system we worked on was a top-of-the-line model, known for its quiet operation and energy-efficient cooling and heating capabilities. These systems are a great choice for Dollard-des-Ormeaux homes due to their compact size, versatility, and ability to maintain comfort in fluctuating weather conditions.

However, even the best systems require proper maintenance to function correctly. Regular cleanings not only extend the lifespan of the unit but also reduce energy consumption. When you neglect your system, the dirt and grime act as insulators, forcing the system to use more energy to achieve the same level of comfort.

The Results: A Customer Delighted by the Transformation

After completing the cleaning, we spoke to the homeowner, who had been experiencing frustration with high energy bills and inconsistent cooling. Following our service, she noticed an immediate difference. The air was cleaner, the system was quieter, and—most importantly—the unit no longer struggled to maintain a comfortable temperature.

The story doesn’t end there. The homeowner was so impressed by our service that she requested that we come back next season for a follow-up cleaning. This is precisely why we believe that maintaining clear communication with our customers and providing outstanding service is key to long-term relationships.

Benefits of Professional Mini Split Cleaning

  • Improved Air Quality: A dirty mini split can circulate dust, allergens, and mold spores, negatively impacting indoor air quality. Our thorough cleaning eliminates these harmful particles, ensuring you breathe easier.
  • Enhanced Efficiency: Clean coils and fins allow for better heat transfer, meaning your system works more efficiently and uses less energy to cool or heat your home.
  • Longer Lifespan: Routine maintenance reduces wear and tear on your system, extending its operational life and delaying the need for costly replacements.
  • Reduced Energy Bills: A well-maintained mini split runs more efficiently, which translates into lower energy consumption and reduced utility costs.

A Maintenance Plan Tailored to You

We always recommend that homeowners establish a seasonal maintenance plan for their HVAC systems, especially if they rely heavily on them throughout the year. This ensures that minor issues don’t turn into major problems, keeping your system running smoothly.

At AirGreen, we provide customizable maintenance plans that suit your needs and budget. Whether you want annual cleanings or more frequent check-ups, we’re here to help ensure your mini split system remains in excellent condition year-round.

A Word on AirGreen's Expertise

As a local leader in HVAC services, we pride ourselves on delivering top-tier results to customers across Montreal and surrounding areas. Every job, no matter how big or small, receives the full attention and care that only a professional HVAC company like ours can offer.

We understand the value of a comfortable home and are dedicated to ensuring that your HVAC system works efficiently and reliably, no matter the season. From installations to repairs and routine maintenance, AirGreen offers a wide range of services that can be tailored to meet the unique needs of your home.

Don’t wait until your system breaks down—call us today for professional HVAC cleaning and maintenance services in Dollard-des-Ormeaux and beyond!

The steps

How the job unfolds

The main steps of this kind of job at AirGreen. Every house has its quirks: the estimate brings them out.

Step 1 of 5The appointment

The type of unit, its age and what you have noticed: noise, smell, water, lower output.

  1. The appointmentThe type of unit, its age and what you have noticed: noise, smell, water, lower output.
  2. InspectionFilters, coils or core, drain, fans, connections and clearances.
  3. CleaningDirty parts are cleaned following the manufacturer's recommendations.
  4. ChecksOperation, water drainage, noise and airflow.
  5. The reportWhat was done, what to watch and when to come back.
The tour

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.

Generic diagram: wall-mounted heat pump, indoor and outdoor units

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.

  1. 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.

  2. The refrigerant lines, the communication cable and the drain go through the wall in a single opening, sealed against water, cold air and insects.

  3. Two insulated copper pipes connect the two units. Outside, a line cover can protect them from sun, knocks and weather.

  4. A shut-off switch near the outdoor unit isolates it safely for service. It must stay accessible at all times.

  5. The compressor and the fan. In heating mode it captures heat from the outdoor air, even in winter, and moves it inside.

  6. On the ground or on the wall, it keeps the unit above accumulated snow. The unit stays clear and defrost water can drain away.

  7. The fan needs to blow freely. Storage, a fence or a wall too close, and efficiency drops while noise goes up.

Maintenance

Good habits, once the unit is in place

Six simple habits that keep the unit going. Your list stays on this device.

0 / 6 checked
Through the seasons

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.
For your project

The right pages, at the right time

True or false

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.

2. You pick the capacity with a simple square-footage rule.

3. A multi-zone connects several indoor heads to a single condenser.

4. The disconnect can sit behind the patio furniture.

Frequently asked questions

What people ask us about this kind of work

9 questions
How often should maintenance be done?
It depends on the unit and how it is used; the manufacturer gives the frequency. Filters get checked much more often than the full service.
Does maintenance improve performance?
A dirty filter, coil or core cuts airflow and makes the unit work harder. Cleaning them restores the airflow.
Does a wall-mounted heat pump heat in winter?
Yes, it heats and cools. Its capacity drops in very cold weather; the operating range depends on the model and is listed on its spec sheet.
Wall-mounted or multi-zone: how do I choose?
One wall head and one condenser outside: the direct solution for a room or an open area. For two to five rooms, a multi-zone puts one head in each room on a single condenser.
Where does the outdoor unit go?
Where it stays above the snow, clear and accessible, away from walkways. We decide it with you during the estimate.
Are there grants?
Depending on the model and your situation, assistance programs may apply, including Hydro-Québec's LogisVert. AirGreen checks the model number before quoting an amount. See the grants.
Do I need a permit?
Rules vary from city to city: location, distances, noise. See permits and by-laws, and we check for your address.
Does AirGreen hold the required licences?
Yes. AirGreen holds RBQ licence 5645-9605-01, subclasses 15.8 Ventilation, 15.10 Refrigeration and 16 Electricity.
Is the estimate free?
Yes. The on-site estimate is free and the quote follows within 24 hours. Book my free estimate.

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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).

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