Québec winters are relentless, and it’s precisely during these cold spells that a reliable HVAC heating system becomes essential. Recently, we responded to an emergency repair service call in Kirkland, on the island of Montréal, where a Midea wall-mounted heat pump was showing signs of malfunction right in the heart of February. This type of situation requires a fast, professional, and methodical response – exactly what we delivered at AirGreen.
A worried customer facing a silent heat pump during a snowstorm
Upon arrival, our team immediately noticed a significant build-up of snow and ice on the outdoor unit of the Midea wall-mounted heat pump. The customer explained that the system had stopped blowing warm air for a few days, despite the indoor temperature continuously dropping. They were worried they might need to replace the entire unit.
Quick diagnostic and full inspection of the outdoor unit
Our first step was a visual and technical diagnostic. Here’s what we checked:
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Ice build-up on the fan blades and protective grille
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Partial blockage of the fan due to freezing
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Power supply and breaker panel check (everything was normal)
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Inspection of the refrigerant lines and outdoor conduit (both in good condition)
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Analysis of the error code displayed on the indoor unit (code indicated a defrost issue)
The problem turned out to be a malfunction of the automatic defrost cycle, a common issue on some units if seasonal maintenance hasn’t been carried out thoroughly.
Repair: manual defrost and system reset on the Midea unit
We started with a complete manual defrost of the unit, using low-pressure warm air, taking care not to damage the condenser fins. Once the ice was cleared, we:
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Cleaned the fan and temperature sensors
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Checked the external coil thermal sensors
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Reprogrammed the defrost cycle sequence in the control panel
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Fully reset the unit
Once restarted, the heat pump resumed normal operation, blowing steady, warm air once again.
Winter precautions: what we recommended to the customer
To avoid another unnecessary service call, we took the time to inform the client about proper winter maintenance practices, including:
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Regularly clearing snow from around the outdoor unit
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Never fully covering the unit with a tarp (risk of condensation and freezing)
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Scheduling a full preventive maintenance visit in the fall, including sensor cleaning and defrost cycle testing
We also suggested installing a raised wall bracket to keep the unit above ground level and away from heavy snow build-up – a simple but highly effective solution, especially in Kirkland where snow accumulation can be significant.
Why choose AirGreen for your Midea heat pump maintenance and repair?
At AirGreen, we specialize in fast, accurate diagnostics and repairs of all HVAC systems, including Midea, a brand growing in popularity among homeowners in Montréal’s West Island. Our certified technicians are familiar with the specific internal protocols of Midea’s wall-mounted units, which allows us to carry out targeted and long-lasting repairs.
We provide quick and efficient service across the entire Montréal, Laval, Longueuil, as well as the North Shore and South Shore, with state-of-the-art equipment and an approach based on transparency, swift execution, and customer satisfaction.
A simple yet critical repair for a family's comfort in Kirkland
This intervention on a Midea wall-mounted heat pump reminds us how a small detail – like a miscalibrated sensor or persistent ice – can compromise an entire heating system in the middle of winter. Fortunately, thanks to our HVAC expertise and a fast response, we were able to restore the client’s comfort without replacing any equipment – a major cost saving, and peace of mind restored.
At AirGreen, every service call is treated with the same care as a major project. Because for our customers, it’s never “just a heat pump” – it’s about their comfort, their safety, and their quality of life.
Technical details of the repaired equipment:
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Brand: Midea
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Type: Wall-Mounted Heat Pump
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Model: Residential wall unit (specific model not provided on-site)
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Problem: Outdoor fan blocked by ice + malfunctioning automatic defrost system
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Repair: Manual defrost, cleaning, sensor calibration, system reset
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City: Kirkland
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Service duration: 1 hour 45 minutes
AirGreen: your wall-mounted heat pump repair experts in Kirkland and throughout Greater Montréal
Whether it’s an HVAC emergency or preventive maintenance, our team is ready to respond quickly and ensure your equipment works as it should. Call us today for a professional inspection or custom repair. We’re here to guarantee your comfort – no matter the weather outside.