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Réparation d’un climatiseur mural Sharp à Rosemont–La Petite-Patrie
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Sharp wall-mounted air conditioner repair in Rosemont–La Petite-Patrie

A service call in a typical Montreal duplex

On a warm spring day, our AirGreen team was called to a duplex in Montreal's Rosemont–La Petite-Patrie neighborhood . The owner contacted us after noticing that their Sharp wall-mounted air conditioner was no longer effectively cooling their living space, despite recent maintenance by another independent technician.

The system, installed above a patio door opening onto an interior courtyard, was blowing warm air and making abnormal fan noise . This type of situation is common in Montreal buildings where wall-mounted units are exposed to significant temperature variations between seasons.

Accurate diagnosis: when noise reveals a mechanical problem

Upon initial inspection, our technician noticed:

  • Uneven airflow from the interior turbine;

  • A buildup of dust and grease on the fan motor;

  • A lower than normal refrigerant pressure level ;

  • Audible vibrations due to fan imbalance .

After partially disassembling the unit, we discovered that the blower motor shaft was slightly misaligned . This misalignment was causing friction against the plastic housing, producing the noise reported by the customer.

AirGreen intervention: method and precision

To restore the Sharp wall-mounted air conditioner to perfect condition, our team followed these steps:

  1. Complete cleaning of the filter, coil and fan to remove any accumulated dirt.

  2. Straightening and realigning the blower motor shaft to ensure smooth rotation.

  3. Lubricate the engine with a specific silicone-based product to extend its lifespan.

  4. Check the wiring of the electronic board to rule out any voltage fluctuations.

  5. Pressure test of the refrigeration circuit and partial recharge with R-410A , the unit's original refrigerant.

Once the repair was complete, we carried out a full performance test . The result: blowing at 10°C , perfectly stable pressure and no perceptible vibrations .

Restored comfort and a satisfied customer

In less than two hours, the customer's indoor comfort was fully restored. The air conditioner operated quietly, distributing air evenly throughout the room.

We also installed a new room temperature sensor to improve control accuracy, an addition often recommended for older Sharp units.

Before leaving the premises, our technician took the time to give the owner several maintenance tips:

  • Clean the filters once a month during the summer;

  • Avoid blocking the air outlet with curtains or shelves;

  • Schedule annual preventative maintenance in the spring to extend the life of the system.

AirGreen Expertise: Maintenance and repair of Sharp systems in Montreal

Sharp wall-mounted systems , renowned for their durability, offer excellent energy efficiency when properly maintained. However, like any HVAC unit, they can suffer from mechanical wear or minor leaks after several years of use.

At AirGreen , we have the experience and tools necessary to work on all Sharp wall-mounted ranges , including:

  • The ZU1 and AY-XP series, popular in Montreal residences;

  • Variable speed models with Inverter technology;

  • The more recent R-32 versions, with low environmental impact.

Our technicians are trained to quickly diagnose problems with blower motors , refrigerant leaks , control boards or faulty sensors , and have a stock of genuine Sharp parts for fast and reliable repairs.

AirGreen: your HVAC partner in Rosemont and throughout Montreal

Every intervention is an opportunity for us to demonstrate our commitment to quality and customer satisfaction . Whether for an emergency repair , preventive maintenance or unit replacement , our experts are available in Montreal, Laval, Longueuil, on the North Shore and the South Shore .

We know that home comfort relies on a reliable HVAC system. That's why we take a meticulous and transparent approach, accompanied by concrete recommendations to avoid future breakdowns.

In summary

  • Problem : Sharp wall-mounted air conditioner blowing warm air and making abnormal noise.

  • Cause : Blower motor shaft misaligned and partial loss of refrigerant pressure.

  • Solution : Mechanical realignment, cleaning, lubrication and recharge with R-410A.

  • Result : Optimal cooling and quiet operation.

  • Location : Rosemont–La Petite-Patrie, Montreal.

At AirGreen , we refurbish wall systems with rigor, passion and recognized local expertise.