Condensation problem effectively solved by the AirGreen team
At AirGreen , every service call is an opportunity to demonstrate our technical rigor and our commitment to the comfort of our customers. That day, we were called to intervene in Saint-Léonard , a residential area of Montreal , for a water leak problem coming from a Fujitsu wall-mounted heat pump installed in a single-family home.
Context of the intervention
The customer contacted us after noticing water leaking down the wall beneath the indoor unit. The unit, installed above a passageway leading to the kitchen, was operating normally in air conditioning mode, but traces of moisture were beginning to appear on the molding.
The Fujitsu unit had been in service for approximately four years and had not received maintenance for two seasons. Our team therefore traveled to perform a complete on-site diagnosis.
Diagnosis: Condensation buildup and blocked drain
Upon our arrival, we carried out a detailed inspection:
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Brand and type: Fujitsu wall-mounted heat pump, LZAS series model (12,000 BTU).
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Location: Installed in a central hallway overlooking the kitchen, an area with high humidity.
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Main symptom: Water dripping on the interior wall when operating in air conditioning mode.
Our checks revealed:
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A condensation drain partially blocked by a deposit of dust and mold.
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A slight misalignment of the evacuation tray , caused by a micro-vibration of the wall support.
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A clogged interior filter , reducing air circulation and increasing condensation on the evaporator.
AirGreen intervention: precision and prevention
Our technicians carried out the following steps:
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Thoroughly clean the condensation drain using a service vacuum and a biodegradable disinfectant solution.
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Check the level and tightness of the wall bracket , to ensure an optimal flow angle.
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Disassembly of the front cover and cleaning of the coil with a Fujitsu approved no-rinse cleaner.
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Disinfection and rinsing of the condensate tray.
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Cleaning and drying the air filters , then replacing them.
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Complete cooling cycle test for 20 minutes to confirm water drainage was unobstructed.
The unit has resumed stable operation with no noise or visible leaks.
Result: a clean, healthy and quiet system
After the intervention, the client immediately noticed the difference:
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No more water on the wall or visible moisture.
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Fresher, more consistent air in the kitchen.
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Reduction of damp odors by disinfecting the drain.
Our technicians took advantage of the visit to reiterate the importance of annual preventative maintenance to avoid this type of inconvenience. Regular inspection not only prevents condensation blockages, but also optimizes the lifespan of the compressor and indoor fan.
Why choose AirGreen for your Fujitsu heat pump repairs?
By choosing AirGreen , you benefit from:
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Certified technicians specializing in Fujitsu, Midea, Gree, Sharp, Lennox, and other major brand wall systems.
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Transparent diagnosis with clear explanation of causes and solutions.
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Genuine parts and maintenance products approved by manufacturers.
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Fast service covering Montreal, Laval, Longueuil, the North Shore and the South Shore.
We believe that the quality of a repair is measured by its durability. That's why every AirGreen repair is carried out with the same attention to detail—from initial diagnosis to post-service follow-up.
AirGreen: Your Trusted HVAC Partner in Montreal and Beyond
Thanks to our teams deployed throughout the greater metropolitan area, we respond quickly in Saint-Léonard, Anjou, Rosemont, Brossard, Laval and Terrebonne .
Our interventions combine efficiency, cleanliness and technical expertise , ensuring the lasting comfort of our residential and commercial clients.
This Fujitsu wall-mounted heat pump repair in Saint-Léonard perfectly illustrates the AirGreen philosophy: diagnose quickly, correct effectively and prevent sustainably.