AirGreen intervention under a terrace: an accurate diagnosis despite restricted access
At AirGreen , we often work in demanding technical situations, and this Midea heat pump repair in Sainte-Julie , on Montreal's South Shore , is a perfect example. The outdoor compressor was installed under a wooden deck , making access difficult and ventilation limited—two factors that can compromise the performance and longevity of an HVAC system.
Context of the service call
Our client in Sainte-Julie contacted us after noticing a significant drop in the performance of their heat pump . The unit was no longer able to maintain a stable indoor temperature, and the outdoor unit seemed noisier than usual . During the inspection, our team discovered that the Midea heat pump, installed several years ago, was located in an enclosed space , under a deck, without sufficient clearance to ensure proper air exchange.
Fault diagnosis
Symptoms observed:
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Significantly reduced efficiency, especially in air conditioning mode.
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High compressor noise level.
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Excessive condensation and debris around the fan.
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Intermittent overheating due to lack of natural ventilation .
After turning off the power and performing pressure tests, we found that the condenser was dirty and the fan circuit board was showing signs of overheating. The root cause: poor positioning of the unit , exacerbated by accumulated moisture and a lack of air circulation under the deck.
Steps of repair
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Complete cleaning of the condenser with a biodegradable product to remove dust and organic deposits.
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Checked the electrical connections and replaced the fan board, damaged by excessive heat.
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Readjustment of the wiring and securing of the refrigerant lines to prevent any vibration against the wooden structure.
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Added shims to improve drainage and air clearance around the unit.
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Complete performance test : balanced pressures, restored blowing temperature and noise reduced by more than 40%.
Technical analysis: why an installation under a terrace poses a problem
A confined space prevents the heat pump from efficiently removing heat. The compressor works harder, which causes:
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An increase in energy consumption ;
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Premature engine wear ;
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An increased risk of freezing in winter and overheating in summer.
At AirGreen, we always recommend a minimum clearance of 60 cm around and above the outdoor unit. If the terrain configuration does not allow this, we offer customized solutions : relocation of the unit, directed mechanical ventilation , or installation of thermal deflectors .
Results and customer satisfaction
After the repair, the Midea heat pump was fully efficient again. The customer immediately noticed:
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Better indoor temperature stability ;
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Reduced operating noise ;
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Optimized energy consumption .
We also recommended an annual inspection to prevent moisture under the deck from damaging the electronic components again.
AirGreen Tips for Difficult Installations
If your outdoor unit is located in a confined or poorly ventilated area , here are some simple recommendations:
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Clean the condenser grilles regularly ;
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Make sure that no plant debris obstructs air circulation;
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Avoid any installation directly under an enclosed terrace ;
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Schedule professional HVAC maintenance in the spring and fall.
These simple actions extend the life of your device and reduce the risk of breakdown.
AirGreen: your reference for HVAC repairs on the South Shore
Whether you are in Sainte-Julie, Brossard, Saint-Bruno or Boucherville , our technicians respond quickly to any Midea heat pump repair or other brands such as Gree, Fujitsu, Sharp, Lennox, Goodman, Bosch or Trane . We diagnose accurately, repair with care and always offer courteous and transparent service.
AirGreen is a team passionate about the performance and durability of HVAC systems. No matter the complexity of the project, we always find the right solution.