Behind every high-performing wall-mounted heat pump is meticulous maintenance—often underestimated, yet absolutely essential to ensuring long-term reliability. At AirGreen, our technicians specializing in HVAC maintenance in Montréal, Laval, Longueuil, the North Shore, and the South Shore frequently observe how maintenance is neglected… until a serious issue arises. In this article, we’re opening the doors to the professional practices we apply daily and shedding light on what few people truly understand about cleaning and maintaining wall-mounted heat pumps.
Why maintenance for a wall-mounted heat pump is never optional
Even top brands—whether it’s a Fujitsu KZAH, a Gree Lomo, or a Sharp ZU1—are not immune to the consequences of poor maintenance. Clogged filters, dust buildup, blocked drainage, dirty heat exchangers—these issues can drastically reduce energy efficiency, even doubling your electricity consumption, while degrading indoor air quality.
At AirGreen, we view maintenance as a performance guarantee. Our service visits not only extend the lifespan of your equipment but ensure it performs at its best—even during the harshest cold spells Québec has to offer.
The full technical inspection: AirGreen’s non-negotiable ritual
Every HVAC maintenance visit performed by AirGreen follows a rigorous, documented process that’s constantly refined. Here are the steps our technicians carry out during a visit in Montréal, Laval, or elsewhere:
-
Full cleaning of air filters, with replacement if needed.
-
Inspection of the refrigerant circuit: pressure checks, leak detection, valve inspections.
-
Condensate drain inspection to prevent backups and mold.
-
Dust removal from the indoor unit, especially coils and fans.
-
Controlled pressure washing of the outdoor unit, often clogged by leaves, snow, or urban pollution.
-
Energy performance analysis, with precise measurements of temperature and airflow.
We use professional diagnostic tools—including thermal cameras and digital manometers—to detect even the smallest issues invisible to the naked eye.
Real-life case: a poorly maintained heat pump in Longueuil saved just in time
During a preventive maintenance call in Longueuil, our team was dispatched to service a Gree Extreme wall-mounted heat pump that hadn’t been serviced in four years. The unit still worked, but was unusually noisy and inconsistent. A quick inspection revealed an almost burnt-out capacitor, fins bent due to dust buildup, and a completely clogged drain.
After a thorough deep cleaning, internal adjustments, and replacement of a few minor components, the heat pump regained its original efficiency—avoiding a costly replacement. The client saved several thousand dollars thanks to one simple preventive visit.
The invisible effects of poor maintenance on your bills and comfort
Neglecting maintenance doesn’t just lead to breakdowns—it increases your energy consumption in a subtle but significant way. A slightly dirty unit can lose up to 25% of its efficiency without you even realizing it at first. The result: your heat pump works harder, longer, heats or cools less effectively, and costs more to operate.
In addition, indoor air quality deteriorates: dust, mold, bacteria, and allergens are filtered out less effectively, which can impact the health of the occupants.
Regular maintenance vs emergency repairs: make the right choice
An annual HVAC maintenance visit costs on average three to five times less than an emergency repair. At AirGreen, we’ve documented that over 70% of winter service calls could have been avoided with a fall maintenance visit.
That’s why we strongly encourage our clients on the South Shore and the North Shore to schedule their yearly maintenance—preferably before the extreme cold sets in.
Frequent mistakes to avoid, according to our technicians
-
Thinking a quick filter cleaning is enough: False. It’s a good start, but the outdoor unit, refrigerant circuit, and sensors all need professional attention.
-
Waiting until something breaks before calling a technician: Too late. Preventive maintenance avoids breakdowns in the first place.
-
Using corrosive household cleaners to clean components: Harmful to the equipment.
-
Believing modern heat pumps are “maintenance-free”: All units, regardless of brand or model, require annual maintenance.
Why choose AirGreen for your wall-mounted heat pump maintenance?
We do far more than basic cleaning. We provide a complete diagnostic, make precise technical adjustments, and offer personalized recommendations to optimize your system. Our clients in Montréal, Laval, Longueuil, as well as on the North Shore and South Shore, appreciate our professionalism, punctuality, and transparency.
Plus, we maintain a detailed service history for every unit we work on, allowing us to quickly detect any recurring issues during future visits.
Conclusion: maintenance, a science mastered by AirGreen
Far from a formality, wall-mounted heat pump maintenance is a technical and strategic operation. Thanks to our field expertise, methodical approach, and personalized service, we make every visit an opportunity to improve your system’s efficiency, durability, and comfort.
At AirGreen, we believe professional, scheduled, and well-executed maintenance is the key to lasting, efficient, and reliable comfort in every season.