Service Call for Central Heat Pump Repair: DAIKIN in Montréal
Discover how AirGreen expertly restored a Daikin central heat pump in Montréal, bringing comfort back to our client's home while delivering outstanding service and value.

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.
An In-Depth Look at Our Recent Central Heat Pump Repair in Montréal
When it comes to HVAC services in Montréal, we at AirGreen pride ourselves on delivering exceptional quality and customer satisfaction. Recently, we responded to a service call in Montréal, where a central heat pump from DAIKIN was experiencing issues. Our skilled team quickly sprang into action, showcasing our expertise and commitment to providing efficient and reliable heating and cooling solutions. Here’s a closer look at the work we performed, the challenges we overcame, and why our customer left the experience completely satisfied.
The Problem: A Daikin Central Heat Pump in Need of Repair
The central heat pump, a crucial component of the customer's HVAC system, had started to exhibit signs of poor performance. The client noticed uneven heating and a drop in overall efficiency, which led to discomfort during temperature changes. Upon arrival, our technicians performed a comprehensive diagnostic check to determine the root cause of the issue. This unit had developed some problems that were affecting its capacity to heat and cool effectively.
Our initial inspection uncovered some buildup within the evaporator coil and a malfunction with the heat pump’s refrigerant flow control. The refrigerant levels were lower than optimal, and some copper tubing had signs of corrosion, leading to a slight leak that was affecting the system's performance. This wasn’t just about repairing a malfunction; it was about restoring the unit to its peak efficiency while extending its operational lifespan.
The Repair Process: Restoring Performance and Efficiency
At AirGreen, we follow a meticulous process to ensure that every repair meets the highest standards of quality and safety. Here's how we approached the repair:
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Evaporator Coil Cleaning
The evaporator coil, located deep within the heat pump, was cleaned thoroughly to remove any accumulated dust, grime, and other contaminants. This buildup can greatly reduce efficiency, causing the unit to work harder and consume more energy than necessary. -
Addressing the Refrigerant Leak
We located the source of the refrigerant leak within the copper tubing and conducted a precision repair to seal the leak and prevent any further loss of refrigerant. This step was critical to ensure that the heat pump could regain its cooling and heating capacity. After sealing the leak, we recharged the system with the appropriate amount of refrigerant, optimizing it for the current season. -
Flow Control and Valve Adjustment
With the refrigerant levels restored, we adjusted the refrigerant flow control valves to ensure the system would function optimally. This adjustment is often overlooked, but it plays a significant role in achieving efficient temperature regulation throughout the home. -
Inspecting Electrical Connections and Controls
Given that the heat pump was showing signs of age, we also inspected all electrical connections, wiring, and control settings to ensure everything was in order. We found some minor wear and addressed it to prevent future malfunctions. -
Performance Testing and Quality Assurance
The final step involved a comprehensive testing phase to ensure the system was performing at optimal levels. We measured the air output temperatures, conducted a load test, and monitored the unit’s energy consumption to confirm that the repairs resulted in tangible improvements.
Why Choose AirGreen for Central Heat Pump Repairs?
Our customer was thrilled with the results of our work, and it wasn’t just because the heat pump was functioning again. It was due to the approach we took and the added value we provided throughout the process.
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No Charge if We Can’t Repair It
We stand by our commitment: if we can’t repair it, we won’t charge for the service call, as long as the client opts for a new installation with us. This is part of our transparent pricing policy, designed to build trust with our customers. -
Special Offers and Discounts
We always strive to give our customers the best possible deal. For this particular client, we extended a discount on our labor fees, which further sweetened the repair experience. -
Preventive Maintenance Tips Provided
After the repair, we shared some useful tips on maintaining the central heat pump, such as how to keep the filters clean, when to schedule routine check-ups, and what signs to look out for in the future. By empowering our customers with this knowledge, we help them maintain the efficiency of their HVAC systems.
Customer Satisfaction is Our Top Priority
In this case, our customer’s primary concern was finding a long-term solution that wouldn’t require frequent service calls. After completing the repair, the customer reported an immediate improvement in home comfort levels, with even temperature distribution throughout their residence.
The feedback we received spoke volumes about the importance of thorough repair services and transparent policies. The customer appreciated not only the quality of the repair but also the extra mile we went to ensure their peace of mind. This included providing a warranty on the repair work, so the client could rest assured knowing we were just a call away should any issues arise.
Regular Maintenance: The Key to Long-Lasting HVAC Performance
We can't emphasize enough the importance of regular maintenance for any HVAC system. Even high-quality units require periodic cleaning and inspections to keep them running smoothly. By keeping up with annual service calls, homeowners can avoid larger issues down the road and extend the life of their HVAC system.
Our Recommendations for Preventive Maintenance:
- Change Air Filters Every 3 Months: Dirty filters can drastically reduce airflow and force the unit to work harder, increasing energy costs.
- Inspect the Outdoor Unit: Keep the outdoor condenser unit free from debris, foliage, and dirt that can obstruct airflow.
- Schedule Professional Maintenance Annually: An annual check-up with one of our qualified technicians ensures that all system components are functioning efficiently.
Conclusion: Trust AirGreen for All Your HVAC Needs in Montréal
At AirGreen, we don’t just fix HVAC issues; we provide comprehensive solutions tailored to the unique needs of each customer. Our approach to repairing this Daikin central heat pump exemplifies our commitment to quality, customer service, and fair pricing. Whether it's a minor repair, a full system replacement, or routine maintenance, our team is here to help you get the most out of your heating and cooling systems.
If you're in Montréal, Laval, Longueuil, or anywhere on the North Shore or South Shore, trust AirGreen to handle all your HVAC needs with expertise and care.
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?
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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?
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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).
