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Réparation d’un climatiseur mural Midea à Côte-des-Neiges
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Repair of a Midea wall-mounted air conditioner in Côte-des-Neiges

When a sudden breakdown threatens the comfort of a Montreal summer

At AirGreen , we know that a broken wall-mounted air conditioner, especially during the hot season, can quickly turn a pleasant day into a real ordeal. This is precisely what an apartment owner in Côte-des-Neiges , Montreal, experienced when his Midea wall-mounted air conditioner stopped producing cold air overnight.

Our team was called for an emergency service call , and as always, we responded quickly to diagnose the situation and restore customer comfort.

Initial diagnosis: a Midea appliance in difficulty

The unit in question, a Midea wall-mounted air conditioner of approximately 12,000 BTU, installed in a main room, exhibited several symptoms:

  • Warm air coming out of the indoor unit.

  • Flashing indicator light indicating an internal fault.

  • Slight condensation buildup under the front panel.

Upon our arrival, we carried out a complete diagnosis of the system. We checked:

  1. Condition of the air filter : slightly clogged, which reduced airflow.

  2. The interior fan : in good rotation condition.

  3. The evaporator coil : localized traces of frost, a sign of a possible lack of refrigerant.

  4. Refrigeration circuit pressure : lower than normal.

These observations pointed us towards a minor refrigerant leak in the circuit.

On-site repair: tracing, sealing and recharging

Our technician conducted a leak detection test using an electronic detector and a foaming solution. The leak was coming from a loose flare fitting on the outdoor condenser.

Here are the steps we followed:

  • Tighten the fitting and replace the flare seal to ensure a seal.

  • Completely vacuum the system for 30 minutes to remove all traces of moisture and air.

  • R-32 refrigerant recharge , according to Midea manufacturer's specifications.

  • Restart and performance check .

A few minutes after restarting, the customer could feel a steady, cold airflow again, proof that the repair was successful.

Result: restored comfort and optimized performance

After our intervention, we checked:

  • Blowing temperature: 9°C in cold mode.

  • Working pressure: according to Midea data.

  • Noise level: perfectly normal.

We also took the time to clean the filters and explain to the customer the importance of regular maintenance to prevent future breakdowns.

Thanks to this repair, the device is operating at full efficiency, and the customer has regained optimal comfort while avoiding a more serious and costly breakdown.

Why call AirGreen for your HVAC repairs in Montreal?

At AirGreen, we operate throughout Montreal , Laval , the North Shore and the South Shore to diagnose, repair and maintain all types of HVAC systems:

  • Wall and central air conditioners

  • Wall-mounted, MultiZone and central heat pumps

  • Ducted systems and ceiling cassettes

  • PTAC and business units

Our technicians are trained on all major brands, including Midea , Gree , Fujitsu , Sharp , Goodman , Bosch and Lennox . We only use genuine parts and follow manufacturers' recommendations to ensure a long-lasting and safe repair .

AirGreen Tips: Preventing Wall-Mounted Air Conditioner Breakdowns

To extend the life of your wall-mounted air conditioner, we recommend:

  • Clean the air filters every two months during the summer season.

  • Check the flow of condensate to avoid water overflows.

  • Do not block the air outlet with furniture or curtains.

  • Have the refrigerant pressure checked once a year.

  • Schedule preventive maintenance in the spring to detect any anomalies before the hot weather.

These simple actions can avoid many inconveniences and reduce energy consumption.

Local expertise, recognized service

As a Montreal company, we are proud to contribute to the thermal well-being of homes in Greater Montreal . Each service call is an opportunity for us to demonstrate our expertise and attention to detail.

The intervention in Côte-des-Neiges perfectly illustrates our philosophy: diagnose precisely, repair efficiently and advise honestly .

If your Midea (or any other brand) air conditioner is showing signs of weakness, call AirGreen . We will restore your comfort with professionalism, speed, and transparency.

AirGreen – HVAC repair and maintenance in Montreal, Laval, North Shore and South Shore.
Comfort, efficiency and local expertise at the service of your well-being.