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Une intervention rapide pour un confort retrouvé à Boucherville
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A swift intervention for restored comfort in Boucherville

Repair of an LG wall-mounted heat pump in Boucherville: a precise service in a tight space

At AirGreen, we understand how crucial a wall-mounted heat pump is for maintaining optimal comfort, year-round. During a service call in Boucherville, we were contacted to inspect an LG Wall-Mounted Inverter V unit that, according to the client, was no longer blowing cold air, even though the compressor was still functioning. The indoor unit was clearly installed in a very tight upper corner, requiring our team to perform a meticulously technical intervention.

On-site diagnosis: internal ventilation failure

As soon as we arrived, we conducted a thorough analysis of the system:

  • Model: LG Wall-Mounted Inverter V heat pump

  • Type: Single-zone wall-mounted unit

  • Reported problem: No airflow despite outdoor unit running

  • Installation location: Upper inside corner of a wall, next to a window, with limited clearance

This type of setup is very common in new builds and condos and often makes accessing service panels more complex. Despite this, we quickly confirmed that the indoor fan motor (cross-flow fan) was stuck and the control board (PCB) was no longer sending start-up signals.

Step-by-step repair process

The repair required several careful steps, all in a confined space:

  1. Power shutoff to ensure complete safety

  2. Front panel removal, carefully done without damaging the adjacent wall or the structure of the heat pump

  3. Fan motor inspection: blockage caused by a build-up of dust and lint stuck around the fan shaft

  4. Thorough cleaning of the blower mechanism and internal sensors

  5. Preventive replacement of the start-up capacitor on the fan motor

  6. Communication check between the indoor and outdoor units

  7. Full system test after the repair

Thanks to our technician’s expertise, we were able to avoid a full motor replacement — a costly solution — by cleaning and precisely realigning the system’s moving parts.

Outcome and customer feedback

Once the work was completed, the unit immediately delivered a strong and steady airflow, along with an optimal cooling cycle. The client noticed the difference right away and was especially impressed with our ability to intervene without invasive disassembly, despite the limited space.

She shared with us that the unit had been installed over six years ago and had never been serviced, a common factor behind issues like this.

Key takeaways: mistakes to avoid

This case highlights the importance of regular maintenance for wall-mounted heat pumps, even when they appear to be running quietly. Here are a few tips we often share with clients:

  • Clean filters monthly during high-use seasons

  • Schedule annual professional maintenance, especially before summer

  • Ensure there’s enough clearance around the unit, which makes future maintenance easier

  • Never ignore slight noises or reduced airflow – they’re often early signs of a clogged or overworked motor

Why choose AirGreen for your HVAC repairs in Boucherville?

At AirGreen, we handle wall-mounted heat pump repairs weekly in Boucherville, Longueuil, across the South Shore, as well as in Montréal, Laval, and the North Shore. What sets us apart:

  • Technicians trained on all major brands: LG, Gree, Fujitsu, Mitsubishi, and more

  • Fast, efficient service, even in complex spaces

  • Clear, accurate diagnostics, with no pushy upselling

  • Post-service follow-ups and personalized tips to prevent future issues

An invisible repair that makes a real difference

This repair left no visible trace, yet it extended the life of this LG wall-mounted heat pump by several years. A well-executed repair isn’t always flashy, but it transforms day-to-day life: less noise, more comfort, and reduced energy use.

Our clients know that with AirGreen, every service call is an opportunity to enhance their HVAC system, while saving money over time.

Areas we serve

We provide HVAC repair services in:

  • Montréal

  • Laval

  • Longueuil

  • South Shore (Boucherville, Brossard, Saint-Hubert…)

  • North Shore (Blainville, Terrebonne, Repentigny…)

For any emergency, our team is ready to respond, 7 days a week, based on seasonal needs.