When the cold invites itself into mechanics: an AirGreen intervention under the snow
In the heart of the Quebec winter, heating and air conditioning (HVAC) systems are put to the test. At AirGreen, we know that a high-performance heat pump is essential to ensure the comfort of families in the metropolitan area, especially when roofs and appliances are covered in deep snow. Our team recently responded to Sainte-Thérèse , on the North Shore of Montreal , for an urgent repair of a Midea heat pump that refused to defrost properly.
Diagnosis: When snow becomes the enemy of energy efficiency
The call came in early one January morning. The customer noticed that their outdoor heat pump was running non-stop, but the indoor temperature remained cold. Upon arriving on site, our technician immediately noticed a compact pile of snow on the Midea outdoor condenser , covering the fins and partially blocking the ventilation.
This kind of problem is common when:
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The automatic defrosting of the system is disrupted.
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The unit is installed in an area where snow accumulates on the flat roof.
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The defrost drain is blocked or misdirected.
A quick check of the electronic board revealed that the outside temperature sensor was no longer transmitting data correctly, preventing the defrost mode from activating.
AirGreen intervention: expertise and precision to improve performance
Our technicians undertook a complete manual defrosting of the condenser using forced hot air, before:
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Check the electrical continuity of the probes and defrost relays.
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Clean the exchanger fins to restore optimal air circulation.
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Replace the defective probe with an original Midea part compatible with the installed series.
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Readjust the defrost cycle calibration via the electronic control module.
After the repair, the heat pump resumed a normal cycle, alternating between heating and automatic defrosting with restored efficiency.
An important reminder: protect your heat pump in winter
At AirGreen, we always emphasize the importance of preventive maintenance for heat pumps during the cold season. A unit directly exposed to the elements must be:
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Clear of any accumulation of snow or ice .
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Installed on a raised base to prevent drainage blockage.
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Checked to ensure electrical and refrigeration lines are not damaged.
We also recommend installing a specialized AirGreen protective shelter , designed to allow free air circulation while preventing ice from forming on top of the unit.
Result: comfort restored and system ready for winter
A few hours after the intervention, the Sainte-Thérèse residence returned to a comfortable and stable temperature. The owner was immediately able to notice the difference in his electricity consumption and in the noise level of the appliance, which was significantly quieter after cleaning.
This type of intervention perfectly illustrates our commitment to offering a complete and rigorous HVAC service : rapid diagnosis, lasting repair and personalized advice to extend the useful life of each piece of equipment.
AirGreen: Your HVAC Repair Reference on the North Shore and Beyond
Whether it's a Midea, Fujitsu, Gree, Sharp or Goodman heat pump , our teams operate throughout Montreal, Laval, Longueuil, the North Shore and the South Shore . Each repair is carried out according to the manufacturer's standards, with certified parts and constant attention to detail.
Because a high-performance HVAC system is, above all, a local service and human expertise, AirGreen remains your trusted partner for all your heating and air conditioning system repair, maintenance and installation needs.