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Service rapide et efficace pour une thermopompe murale Midea à Dollard-des-Ormeaux
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Fast and Efficient Service for a Midea Wall-Mounted Heat Pump in Dollard-des-Ormeaux

When a wall-mounted heat pump breaks down mid-season, it calls for a quick and proper intervention

In the quiet city of Dollard-des-Ormeaux, located on the western part of the Island of Montréal, a residential homeowner recently contacted us for an HVAC service call regarding their Midea wall-mounted heat pump. This unit, installed several years ago in a central living area of the home, was no longer blowing hot or cold air. A complete shutdown that quickly led to noticeable discomfort, especially during a week where temperatures were swinging between cool mornings and warmer afternoons.

At AirGreen, our priority is clear: restore comfort for our clients quickly, thoroughly, and transparently. This service call was handled within 24 hours of the request — proof of our commitment to top-tier customer service in the West Island residential sector.

Initial inspection: visible signs and in-depth diagnosis

Upon arrival, our certified technician conducted a complete visual inspection of the Midea wall-mounted heat pump. The indoor unit appeared intact from the outside — clean, securely mounted to the wall, no abnormal condensation or mechanical noise. However, the unit showed no response, even after a manual restart attempt.

Using our professional diagnostic tools, we proceeded to:

  • Test the electrical supply (checking the breaker and voltage at the terminal).

  • Verify the infrared remote signal.

  • Read internal error codes via the Midea interface.

  • Measure the refrigerant pressure on the outdoor unit.

Problem identified: defective control board

The diagnosis quickly revealed that the main electronic control board (PCB) of the indoor unit was not receiving or processing signals correctly. This control board failure, while relatively rare, is a common cause of total inactivity on certain Midea wall-mounted units when power surges or micro-outages occur.

Fast solution: on-site replacement with original Midea part

Fortunately, at AirGreen, we keep several Midea replacement parts in stock, including the most common PCB boards for wall-mounted units ranging from 9,000 to 24,000 BTU. In this case, it was a 12,000 BTU Midea inverter model, very popular in residential areas of Dollard-des-Ormeaux.

Our technician:

  1. Safely cut off the power.

  2. Carefully removed the existing electronic board.

  3. Installed the new manufacturer-approved compatible board.

  4. Tested the power-on and communication between the units.

  5. Performed a full functionality test in both cooling and heating modes.

  6. Verified airflow, compressor start-up, and noise levels.

Result: the unit restarted perfectly, with stable and quiet performance. The client immediately noticed the return of comfort in the room.

Prevention and personalized tips for the client

Beyond the repair itself, we took time to share preventive tips with the homeowner:

  • Install a dedicated surge protector for the unit to prevent future damage.

  • Schedule annual preventive maintenance, including filter cleaning, gas check, and electrical inspection.

  • Avoid repeatedly restarting a defective unit — this could worsen the issue.

We also enrolled the client in our proactive follow-up program, which allows West Island residents to be automatically reminded each spring for a technical check-up of their HVAC systems.

Why trust AirGreen for your HVAC repairs in Dollard-des-Ormeaux?

At AirGreen, we regularly operate in residential areas of Dollard-des-Ormeaux, Pierrefonds, Kirkland, and Pointe-Claire for tailored HVAC repairs. Our certified technicians are trained on all major brands: Midea, Gree, Fujitsu, Sharp, Daikin, Bosch, Goodman, and more.

What sets us apart:

  • Rapid intervention within 48 hours in most cases.

  • Always using original parts.

  • Clear explanations and service with no pressure or hidden fees.

  • Post-repair follow-up to ensure full customer satisfaction.

Final result: restored comfort and a reassured customer

By the end of this intervention, the client expressed complete satisfaction, not only for the swift repair but also for the clarity of our diagnosis, our courteous approach, and the helpful recommendations provided. This experience once again confirms the importance of choosing a reliable, local, and committed HVAC partner focused on long-term customer comfort.