Repair of an LG Wall-Mounted Heat Pump in Châteauguay
Discover how AirGreen repaired an LG heat pump in Châteauguay with same-day service and expert care. See why homeowners rely on us for top-tier HVAC solutions!

Take a tour of the installation
Each number is a point we check on site. Switch between summer and winter to watch air and heat move.
In summer, the outdoor unit rejects the house's heat outside.
Generic illustration of this type of installation, not a survey of this job site. Tap a number.
Mounted level on a wall plate, high enough for the air to reach the whole room, with enough space around it to slide the filters out easily.
The refrigerant lines, the communication cable and the drain go through the wall in a single opening, sealed against water, cold air and insects.
Two insulated copper pipes connect the two units. Outside, a line cover can protect them from sun, knocks and weather.
A shut-off switch near the outdoor unit isolates it safely for service. It must stay accessible at all times.
The compressor and the fan. In heating mode it captures heat from the outdoor air, even in winter, and moves it inside.
On the ground or on the wall, it keeps the unit above accumulated snow. The unit stays clear and defrost water can drain away.
The fan needs to blow freely. Storage, a fence or a wall too close, and efficiency drops while noise goes up.
Same-Day Repair Services That Leave No Room for Guesswork
At AirGreen, we understand how crucial it is to have a reliable heating and cooling system, especially during Québec’s unpredictable weather. Recently, we were called to a home in Châteauguay where an LG wall-mounted heat pump had been causing frustration for the homeowner. The customer wasn’t sure if the machine was salvageable and worried about whether they’d need a new unit altogether. This service call turned into a showcase of our expert diagnostics, prompt service, and customer-first approach, leaving the homeowner more than satisfied.
The Call: Identifying the Problem with the LG Heat Pump
Upon arriving at the home, our team was greeted by a concerned homeowner who explained that their LG heat pump had been making strange grinding noises and failing to heat the home effectively. The system would start up but shut down shortly after, leaving the family cold and uncomfortable. With a heat pump as reliable as LG, this kind of behavior often signals an issue deep within the unit, typically the compressor or another critical component.
Our technician began with a thorough inspection, examining the compressor, fan motor, refrigerant levels, and electrical connections. After running a series of tests, we identified the culprit: the blower motor had accumulated significant debris, causing it to overheat and shut down the system intermittently. While this issue could have easily led to more serious problems, catching it early allowed us to proceed with a targeted repair.
Our Same-Day Service Policy: What Sets AirGreen Apart
The homeowner was particularly impressed by our same-day service policy, which ensures that if we cannot repair the unit during the service call and the customer opts for a replacement, the service call fee is credited toward the new system. This policy provides peace of mind, especially in situations where repairs may not be feasible.
In this case, however, we reassured the customer that their LG heat pump could be repaired efficiently and cost-effectively. The ability to fix the existing system saved the homeowner both time and money, avoiding the need for a complete replacement.
The Repair Process: Restoring Efficiency and Comfort
Once we diagnosed the issue, our technician got to work restoring the heat pump to its full functionality. Here’s how we approached the repair:
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Disassembly and Cleaning
The first step was carefully disassembling the outdoor and indoor units to access the blower motor and associated components. Years of accumulated dust and debris had clogged the motor, causing it to malfunction. We cleaned the motor thoroughly, ensuring optimal airflow and preventing future overheating. -
Blower Motor Adjustment
After cleaning, we checked the motor’s alignment and lubrication. Improper alignment can lead to grinding noises and wear on the motor shaft, which was contributing to the unusual sounds the homeowner had reported. We realigned and secured the motor to eliminate these issues. -
Refrigerant Check and Top-Up
Although the primary issue was the blower motor, we took the opportunity to inspect the refrigerant levels. While within the acceptable range, a slight top-up ensured the system would run at peak efficiency. -
System Testing
After reassembling the unit, we performed a series of rigorous tests. This included measuring the temperature output, checking the noise levels, and monitoring the system’s cycling to ensure the problem was fully resolved.
Customer Reactions: Happy Home, Happy Heart
The homeowner was thrilled with the results. Not only did their LG heat pump return to operating like new, but they were also relieved to learn that the issue had been caught before it could lead to a costly compressor failure. Our professionalism, transparency, and attention to detail left a lasting impression. The customer was particularly pleased with our proactive approach, which included preventative maintenance advice to extend the life of their unit.
Why Choose AirGreen for Your Heat Pump Repairs?
AirGreen is committed to providing exceptional HVAC services across Montréal, Laval, Longueuil, Rive Nord, and Rive Sud. Here’s why homeowners trust us for their heating and cooling needs:
- Same-Day Service: We prioritize your comfort and ensure prompt solutions to HVAC problems.
- Expert Technicians: Our team is trained to handle all major HVAC brands, including LG, with precision and care.
- Transparent Policies: Our service call credit policy demonstrates our commitment to customer satisfaction.
- Comprehensive Solutions: From diagnostics to repairs and replacements, we cover every aspect of HVAC care.
- Preventative Maintenance: We don’t just fix problems; we help prevent them, ensuring your system runs efficiently for years to come.
The Resilience of LG Heat Pumps
LG wall-mounted heat pumps are renowned for their energy efficiency, durability, and innovative features. Here’s why they remain a favorite among homeowners:
- Smart Inverter Technology: Ensures consistent heating and cooling while minimizing energy consumption.
- Quiet Operation: LG systems are engineered to operate quietly, perfect for maintaining a peaceful home environment.
- Reliable Performance: Designed to withstand Québec’s harsh winters and humid summers.
- User-Friendly Features: Many LG models come equipped with smart connectivity, allowing you to control the system remotely through an app.
By repairing rather than replacing this LG heat pump, the homeowner was able to continue enjoying these benefits without the added expense of a new system.
Conclusion
This repair in Châteauguay is just one example of how AirGreen’s dedication to quality service makes us the trusted HVAC provider in the region. Whether it’s a simple repair, a complex installation, or regular maintenance, we’re here to keep your home comfortable and your HVAC system running smoothly.
If you’re experiencing issues with your heat pump or need a reliable team for routine maintenance, AirGreen is just a call away. Let us bring comfort back to your home with our professional and personalized services!
The big day, step by step
The main steps of this kind of job at AirGreen. Every house has its quirks: the estimate brings them out.
The symptoms, since when, the model (on the unit's label) and the error code if there is one.
We look for the cause, not just the symptom: readings, components, installation.
Repair, part to order or replacement, depending on the failure. We explain what we found.
The repair is done and parts replaced as needed.
The unit is restarted and checked in its operating modes.
What caused the failure and what can keep it from coming back.
- Your callThe symptoms, since when, the model (on the unit's label) and the error code if there is one.
- On-site diagnosisWe look for the cause, not just the symptom: readings, components, installation.
- The optionsRepair, part to order or replacement, depending on the failure. We explain what we found.
- The workThe repair is done and parts replaced as needed.
- TestsThe unit is restarted and checked in its operating modes.
- AdviceWhat caused the failure and what can keep it from coming back.
Your own project, step by step
What to do, season by season
Three habits per season for this unit. They take a few minutes and prevent many calls.
- Clean the indoor unit's filters.
- Clear leaves and debris left on the outdoor unit by winter.
- Test cooling before the first hot days.
- Clean the filters more often when the unit runs a lot.
- Keep plants away from the outdoor unit.
- Check that no water drips from the indoor unit.
- Rake the leaves around the outdoor unit.
- Test heating before the first cold days.
- Book periodic maintenance before winter.
- Keep snow away from the stand and the front of the unit.
- Let the unit defrost: it is normal.
- Never hit the ice on the fins; call us if the unit stays iced up.
Four statements: true or false?
It all comes down to details you have just seen.
1. In heating mode, the outdoor unit can produce water.
During defrost cycles. That water must drain away without forming ice.
2. You pick the capacity with a simple square-footage rule.
Windows, insulation, orientation and how the room is used all count. Capacity is chosen on site.
3. A multi-zone connects several indoor heads to a single condenser.
One head per room, all on the same condenser. Each room keeps its own temperature.
4. The disconnect can sit behind the patio furniture.
It must stay accessible: it is what shuts the unit off for service.
0 / 4 right answers
What people ask us about this kind of work
What should I have ready before calling?
Repair or replace?
Does a wall-mounted heat pump heat in winter?
Wall-mounted or multi-zone: how do I choose?
Where does the outdoor unit go?
Are there grants?
Do I need a permit?
Does AirGreen hold the required licences?
Is the estimate free?
No question matches. Write to us: we answer.
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Text and photo: a real AirGreen Climatisation & Chauffage job. The diagrams are generic illustrations of the type of installation, not a survey of this job site. Sources of the added figures: airgreen.ca product pages (NEEP / AHRI performance), Hydro-Québec (Heat pumps page, LogisVert, read on 13 October 2026), Régie de l’énergie (rate D as of 1 April 2026).
