A service call in the middle of the hot season
At AirGreen , we were recently called to intervene in Sainte-Julie , on the South Shore of Montreal , for a Midea wall-mounted air conditioner that was showing obvious signs of weakness. The owner, concerned about seeing water flowing down the interior wall, had noticed a significant drop in cold airflow and an abnormal noise coming from the interior unit .
In the middle of summer, it was essential to act quickly to avoid a complete breakdown and potential water damage. As always, our team responded with the rigor and efficiency that characterize AirGreen.
On-site diagnosis: preventive maintenance has become urgent
Upon arrival, we noticed that the wall-mounted air conditioner, a Midea mini-split model , had a significant buildup of dirt and dust on the evaporator . This type of situation is very common in residences where annual maintenance is postponed—and yet, regular cleaning prevents the majority of breakdowns.
Our technicians used a professional cleaning kit with a protective tarpaulin and a soft pressure jet , specially designed to protect walls and furniture . The image above clearly illustrates our approach: cleanliness, safety and efficiency above all.
While disassembling the front and casing of the indoor unit, we also noticed that the condensate drainage pipe was partially obstructed . This obstruction prevented the water from draining properly, causing an internal leak and the formation of frost on the coil .
Technical intervention: complete cleaning and unblocking
Our specialists carried out a complete triple intervention :
-
Cleaning the evaporator and centrifugal fan using biodegradable products suitable for Midea systems.
-
Unblocking the condensate drain and flow test to ensure smooth and constant drainage.
-
Electrical inspection and temperature probe check , to rule out any problems related to the electronic control.
This preventive maintenance step restored the air conditioner's original performance without the need to replace any major parts. After reassembly, a comprehensive performance test confirmed a return to optimal airflow and a blowing temperature in line with the manufacturer's specifications.
Result: comfort restored and customer reassured
After our intervention, the difference was immediate. The blown air was cool again, the operation was quiet, and no traces of moisture were visible on the wall. The relieved client decided to subscribe to our annual AirGreen maintenance program , a cost-effective solution that guarantees maximum performance and extended life for HVAC equipment.
Why Maintenance Is Essential for Your Midea Wall-Mounted Air Conditioner
A wall-mounted air conditioner, especially in an area like Sainte-Julie , where summers can be hot and humid, requires minimal annual maintenance to prevent the following problems:
-
Dust accumulation on the evaporator fins
-
Blocked condensate drain , a common source of water leaks
-
Reduced energy efficiency due to internal fouling
-
Premature failures caused by compressor overheating
At AirGreen, we often remind our customers that maintenance costs ten times less than repairs . Our technicians, certified and trained on all major brands (Midea, Gree, Fujitsu, Sharp, Goodman, Lennox, etc.), use only manufacturer-approved products.
Our expert advice to extend the life of your system
To keep your Midea wall-mounted air conditioner operating at its best:
-
Clean the air filter every 3 to 4 weeks during the summer season.
-
Keep the area around the indoor unit clear to ensure good air circulation.
-
Have the system inspected before summer for any signs of leaks or icing.
-
Avoid leaving the air conditioner in “Dry” mode continuously , which strains the compressor.
-
Always have maintenance performed by a certified technician .
A typical AirGreen quality intervention
This repair in Sainte-Julie perfectly illustrates our philosophy: diagnose quickly, intervene cleanly, and extend the useful life of HVAC systems . Each visit is an opportunity to ensure not only the immediate comfort of the customer, but also the long-term reliability of their investment.
Whether you are in Montreal , Laval , on the North Shore or the South Shore , our teams are available for rapid and guaranteed interventions on all makes and models of wall-mounted air conditioners, heat pumps, or central systems.