Repair of a Trane Central Heat Pump in Ahuntsic
Repair intervention on a Trane heat pump in Ahuntsic: AirGreen repaired a refrigerant leak and performed full maintenance to restore the system's efficiency. Comfort restored, performance improved. Services in Montreal, Laval, Longueuil, North Shore, South Shore.

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.
It captures or rejects heat outside. It sits on a level base, above the snow, with free space all around.
The insulated refrigerant lines enter the house through a sealed opening and run to the indoor coil.
A shut-off switch near the outdoor unit isolates it safely for service.
Sitting on the indoor module, it moves heat between the house air and the refrigerant.
Electric furnace or air handler: its fan pushes air through the ducts. The electric backup takes over in extreme cold.
Supply ducts bring air to the rooms; returns bring it back to the unit. Their condition matters as much as the unit's.
It protects the coil and the fan. A dirty filter cuts airflow, so it gets checked regularly.
It runs the heat pump and the backup heat. It must be compatible with the installed system.
Specialized Repair Intervention for a Trane Heat Pump
At AirGreen, we understand how important it is to keep your heating, ventilation, and air conditioning (HVAC) systems in proper working condition, especially during the coldest or hottest months. Recently, we had the opportunity to intervene on a Trane central heat pump in the Ahuntsic area to resolve an issue affecting the unit's performance. This article provides the details of this repair, highlighting the specifics of the model and the solutions we provided.
Context and Initial Problem
The Trane central heat pump in question had begun to show signs of malfunction. During the initial inspection carried out by our expert technicians, we found a significant decrease in the performance of the outdoor unit. The homeowners, concerned about the system's inefficiency, had noticed temperature fluctuations in their living spaces, with periods where the air wasn't heating or cooling as it should.
We then undertook a thorough diagnosis to identify the cause of this issue.
Diagnosis of the Trane Central Heat Pump
Our first goal was to check if the Trane heat pump was functioning properly in both heating and cooling modes. After an initial test, it became clear that the system had difficulty reaching the desired temperature, particularly during the coldest days. After a detailed inspection, here are the main issues identified:
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Frost Accumulation: In winter, frost can form on the components of the outdoor unit, which impairs its efficiency. In this case, the frost was preventing the unit from functioning correctly, reducing its heating capacity.
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Refrigerant Leak: A refrigerant leak can lead to a significant loss of performance. This was one of the factors explaining the poor performance of the heat pump.
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Clogged Filter: Another contributing factor to poor air circulation was a clogged filter, disrupting heat exchange.
Heat Pump Repair Process
Once the diagnosis was made, our technicians took the following steps to restore the system’s proper functioning:
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Defrosting the Outdoor Unit: To allow the unit to regain its efficiency, we carried out a full defrosting of the outdoor unit. This step is crucial to restore optimal performance, especially during cold periods.
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Repairing the Refrigerant Leak: We located the refrigerant leak and repaired the affected pipe. Once the leak was sealed, we recharged the system with the necessary refrigerant for it to operate correctly.
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Replacing the Filter: The heat pump’s filter was replaced with a new, appropriate model. This restored proper air circulation and improved the system's energy efficiency.
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Performance Test: After the repairs, we conducted a full system test. We verified that the heat pump was operating at full capacity, ensuring stable and comfortable temperatures inside the home.
Final Result: Comfort Restored
After our intervention, the homeowners immediately noticed a significant improvement in the performance of their Trane heat pump. The outdoor unit stopped producing frost, and the system regained a stable temperature throughout the house, both in heating and cooling modes. The restored comfort was also accompanied by improved energy efficiency, reducing energy consumption and operational costs in the long term.
Why Choose AirGreen for Your HVAC Repairs?
At AirGreen, we are committed to providing high-quality HVAC repair services, including for heat pump systems like the one we serviced in this Trane unit in Ahuntsic. Our technicians are trained to diagnose and quickly solve all kinds of malfunctions or problems, whether it’s a refrigerant leak, frost accumulation, or a clogged filter.
We understand the importance of an efficient air conditioning and heating system, not only for your comfort but also for optimizing energy efficiency and reducing energy expenses. Whether you're in Montreal, Laval, Longueuil, or on the North Shore or South Shore, AirGreen is here to provide you with reliable, fast, and professional service.
Preventive Maintenance: A Long-Term Investment
It’s always more cost-effective to prevent breakdowns than to repair them. That’s why we recommend regular maintenance for your HVAC units. An annual or semi-annual check-up keeps your systems in perfect working condition, helps identify small issues before they become major breakdowns, and extends the lifespan of your equipment.
Conclusion: AirGreen, Your HVAC Expert in Ahuntsic
In summary, this intervention on the Trane heat pump in Ahuntsic demonstrates the expertise and professionalism of AirGreen in the field of HVAC repair and maintenance. Thanks to our swift and effective intervention, we enabled the clients to regain optimal comfort, while also reducing their energy costs.
If you need repairs or maintenance for your heating, ventilation, and air conditioning systems in Montreal, Laval, Longueuil, or on the North Shore or South Shore, contact us today. Our technicians are ready to handle all your requests, whether it’s troubleshooting, repairs, or the installation of new systems.
How it goes, from the first call to the end
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.
What to do, season by season
Three habits per season for this unit. They take a few minutes and prevent many calls.
- Check the indoor module's filter.
- Clear winter debris from the outdoor unit.
- Test cooling before the heat arrives.
- Check the filter more often in peak season.
- Keep registers and returns clear.
- Watch condensate drainage near the coil.
- Change or clean the filter.
- Test heating and backup heat before the cold.
- Book periodic maintenance.
- Clear snow around the outdoor unit.
- Store nothing in front of the indoor module.
- Note any unusual noise or smell and call us.
Which type of equipment for your project?
Pick what looks like your need.
What people ask us about this kind of work
What should I have ready before calling?
Repair or replace?
Can I keep my current ducts?
What happens in extreme cold?
Furnace, air handler, ducted: what is the difference?
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).
