An urgent service call for a broken Haier unit
At AirGreen , we regularly work on Haier wall-mounted heat pumps in the greater Montreal area, particularly in Sainte-Julie , where a customer recently contacted us about a performance issue with their heating and air conditioning system. The customer noticed that their outdoor heat pump was no longer producing heat and that the fan seemed to be running more slowly than usual.
Initial diagnosis: loss of efficiency and unusual noise
Upon arrival, our technician immediately performed a complete visual inspection of the outdoor condenser . The fan was spinning, but a metallic vibrating noise could be heard, indicating a mechanical imbalance or a damaged part. The diagnosis quickly turned to a fan motor problem combined with a clogged coil due to a buildup of dust and pollen on the grille.
An electrical check was then carried out: the supply voltage was stable, but the current drawn by the compressor was higher than normal values, suggesting excessive effort caused by a lack of efficient heat exchange.
Repair steps: rigor and precision
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Thorough cleaning of the coil using a specialized biodegradable product to remove any dirt blocking the airflow.
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Disassembly of the fan motor , cleaning of the blades and checking of the bearings.
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Replacement of the slightly weakened starting capacitor to ensure good starting torque.
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Refrigerant circuit pressure test : No signs of leakage were detected, but a slightly adjusted R-410A refrigerant charge helped optimize performance.
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Check the condensate drain and electrical protections before restarting.
Once these operations were completed, the Haier heat pump returned to smooth and quiet operation , with a warm and stable blowing temperature inside.
The result: restored comfort and improved performance
The customer immediately noticed the difference: the heating was working efficiently again and the outside noise had disappeared. By carrying out regular preventive maintenance , this type of breakdown could have been avoided. Our technicians therefore took the time to explain to the customer good seasonal maintenance practices , including:
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Clean the internal filters monthly during periods of heavy use.
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Avoid obstructions around the outdoor condenser (vegetation, leaves, snow).
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Schedule annual professional maintenance before winter or summer to maintain energy efficiency and extend compressor life.
Why choose AirGreen for your Haier repairs?
Haier systems are renowned for their reliability and energy efficiency, but like any wall-mounted heat pump , they require specific expertise during diagnostics. At AirGreen , our certified technicians have in-depth knowledge of the specific features of this brand's electronic circuits and compressors.
We operate throughout Montreal, Laval, Longueuil, the North Shore and the South Shore , with vehicles equipped with all the essential parts to ensure fast and lasting repairs . Each visit concludes with a complete performance test and a verification of refrigeration pressures to ensure that your appliance is operating at its optimal efficiency.
Tips to avoid a future breakdown
To keep your Haier system in top condition, we recommend:
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Never leave the outdoor fan obstructed or covered, even in winter.
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Have the refrigerant level checked every two years.
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Use a voltage regulator in areas subject to electrical fluctuations.
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To schedule an AirGreen maintenance contract , which includes cleaning, inspection, and adjustment of performance parameters.
These simple measures not only reduce the risk of breakdown, but also improve energy efficiency and extend the life of your heat pump.
An exemplary intervention in Sainte-Julie
This repair in Sainte-Julie perfectly illustrates our philosophy: respond quickly, diagnose accurately and repair sustainably . In a single visit, our technician was able to restore optimal comfort while extending the longevity of the unit.
Thanks to our methodical approach, the client now benefits from a high-performance system ready to face the rigors of the Quebec climate, summer and winter.