A meticulous intervention to breathe new life into a yellowed and clogged Fujitsu unit
At AirGreen , we know that regular maintenance of a wall-mounted heat pump is not just about aesthetics — it is essential to preserve air quality , energy efficiency , and system durability .
Recently, our team visited an apartment in Outremont to perform a complete cleaning of a Fujitsu Halcyon wall-mounted heat pump , a model well known for its reliability, but here, clearly marked by several years without thorough maintenance.
Yellowed unit, saturated filters: signs of poor maintenance
Upon our arrival, a single glance was enough to understand the situation:
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The unit's hood , once white, had turned creamy yellow , a sign of aging and accumulated greasy dust.
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The filters were visibly clogged , obstructing airflow.
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The evaporator fins showed a thin layer of mold .
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A slight flow of water was coming from the drain , indicating a partial blockage .
These symptoms resulted not only in a loss of thermal efficiency , but also in a deterioration of indoor air quality . The customer complained of an unpleasant odor upon startup and a significantly reduced heating output.
The complete AirGreen cleaning process
To bring this Fujitsu Halcyon heat pump back to life, our team carried out a complete multi-step cleaning , meticulously following the manufacturer's recommendations.
1. Disassembly and protection
We started by removing the front hood and air filters , while protecting the wall and floor with a waterproof wash cover designed for wall units.
Each disassembled component was carefully laid out for individual cleaning.
2. Cleaning the filters
The filters were washed with warm water and mild soap , then disinfected using an environmentally friendly antibacterial product.
Complete air drying prevented any deformation.
3. Evaporator cleaning
Using a pressure-controlled jet system , we cleaned the evaporator fins to remove fine dust, mold, and grease deposits.
This washing process restores optimal heat exchange and prevents the spread of bacteria.
4. Drain unclogging
The drainage pipe , partially blocked by debris and algae residue, was cleared using a vacuum pump .
A flow test confirmed the restoration of normal drainage, eliminating any risk of leakage or odor.
5. Cleaning the fan
One of the critical points was the centrifugal fan , which was often overlooked.
Using a gentle rotary brushing tool , we removed the thin layer of dust stuck to the blades.
The result: a more powerful, quieter and more uniform airflow.
6. Final antibacterial treatment
We applied a disinfectant treatment based on natural enzymes , neutralizing mold spores and bacteria present in the air circuit.
This step ensures complete deodorization and prolongs the effects of cleaning.
Immediate results: restored efficiency and comfort
After reassembly and a complete system test:
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The airflow increased by more than 30% .
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The noise level has decreased significantly.
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The musty smell has disappeared.
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And most importantly, the required temperature was reached much more quickly.
The customer immediately noticed the difference: fresh, clean and odorless air , and a unit that was visibly rejuvenated despite its years of service.
Why should you have your wall-mounted heat pump cleaned every year?
At AirGreen, we always remind our customers that annual preventative maintenance is essential for:
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Avoid costly breakdowns caused by fouling.
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Maintain optimal energy performance (up to 25% savings on the bill).
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To purify indoor air , by reducing the proliferation of mold and bacteria.
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Extend the lifespan of the heat pump.
Simple, regular cleaning can prevent most of the problems we encounter in the field.
AirGreen's expertise: cleanliness, safety and compliance with standards
Our technicians are specifically trained on Fujitsu Halcyon systems and use environmentally friendly products that are safe for occupants and surfaces.
Each procedure is carried out according to a rigorous protocol:
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Complete protection of furniture and walls.
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Visual and functional inspection before and after cleaning.
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Maintenance report provided to the customer at the end of the service.
This rigor makes AirGreen a reference in HVAC maintenance in Montreal, Laval, Longueuil, on the North Shore and the South Shore.
Conclusion: clean air and a heat pump ready for a new season
This Fujitsu Halcyon wall-mounted heat pump cleaning in Outremont demonstrates that professional maintenance transforms not only the system's performance, but also the customer's daily comfort .
With each cleaning, we aim for the same goal: to extend the life of HVAC equipment while ensuring clean and pleasant air to breathe .