Unmatched Expertise in Repairing a Lennox Central Heat Pump in Laval
A heat pump deemed "unrepairable"? Not for AirGreen! Read how we revived a Lennox Central Heat Pump in Laval, saving the day for another satisfied customer.
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.
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.
How Our Technicians Turned an "Irreparable" Heat Pump into a Perfectly Functional Machine
When it comes to HVAC services in Laval, AirGreen is known for exceeding expectations, and this recent service call is proof of our expertise and commitment to customer satisfaction. A client had nearly lost all hope for their Centrale Lennox heat pump, convinced the machine was beyond repair. But where others saw an unsolvable problem, our skilled technicians saw an opportunity to bring a smile back to our client’s face.
The Problem: A Centrale Lennox Heat Pump Out of Service
The service call began with a frustrated client struggling with a heat pump that seemed completely dead. Despite attempts by another company, the unit refused to operate. The client turned to us as a last resort, describing the desperate situation: their Centrale Lennox heat pump was unresponsive, providing neither heating nor cooling, and making a worrying noise during its rare startup attempts.
As we always say at AirGreen: "No machine is truly irreparable until we’ve examined it!"
The Diagnosis: Digging to Find the True Source of the Problem
Our team of experts arrived at the Laval residence equipped with the latest diagnostic tools and years of hands-on experience. It didn’t take long to spot some glaring errors from previous repair attempts.
- The filters hadn’t been cleaned for months, causing poor airflow.
- A faulty capacitor in the outdoor unit had gone unnoticed.
- Electrical connections were poorly secured, causing intermittent failures.
- A small refrigerant leak, neglected, contributed to system inefficiency.
It was a mix of minor issues that, combined, gave the impression the system was "irreparable."
The Solution: Precise Repairs and Proactive Improvements
At AirGreen, we believe in lasting solutions. Here’s how we tackled each problem, step by step:
-
Thorough Cleaning and Maintenance
We started by cleaning the filters and coils of the indoor unit to ensure optimal airflow and improved cooling efficiency. A clogged filter may seem minor, but it can cause serious operational problems over time. -
Capacitor Replacement
The outdoor unit’s capacitor, a critical component for starting the compressor, was immediately replaced. This small repair restored the system’s ability to function properly. -
Securing Electrical Connections
Loose wires were firmly secured, and connections were tested multiple times to ensure stability. We also added protective sleeves to prevent wear. -
Detecting and Sealing the Refrigerant Leak
Using advanced leak detection tools, we identified the source of the refrigerant leak. After sealing the leak, we recharged the system with the exact amount of refrigerant recommended by Lennox. -
System Testing and Calibration
Once repairs were complete, we conducted a series of tests to ensure every component was working as expected. The system was calibrated to provide perfect heating and cooling, tailored to Laval’s unpredictable weather conditions.
A Happy Ending: Another Satisfied Client in Laval
After the repairs, the Lennox heat pump resumed full operation. The client was amazed to see their system not only working but also quieter and more efficient than ever.
“I can’t believe it! I was ready to throw this machine away,” they said. “You saved me from buying a whole new system!”
Why Choose AirGreen for Your Heat Pump Repairs?
At AirGreen, we pride ourselves on delivering top-quality HVAC services throughout Montreal, Laval, Longueuil, and surrounding areas. Here’s why our clients trust us:
- Expert Technicians: Our team is trained to work on a wide range of HVAC brands, including Lennox, Gree, Fujitsu, and more.
- Customer-Centered Approach: We listen, diagnose, and communicate every step of the process, ensuring complete transparency.
- Fast Response Times: We understand the urgency of a non-functioning HVAC system, especially in extreme weather conditions.
- Affordable Solutions: Repairing a machine often saves clients thousands of dollars compared to a full replacement.
Highlights of the Centrale Lennox Heat Pump
The Centrale Lennox heat pump is a popular choice for homes in Laval due to its many advantages:
- Energy Efficiency: With a high SEER rating, it keeps energy bills low while providing consistent comfort.
- Quiet Operation: Its noise level is so low you’ll barely notice it’s running.
- Dual Functionality: Provides both heating and cooling, making it an ideal solution for all seasons.
By bringing this machine back to life, we demonstrated how reliable and efficient a Lennox heat pump can be when properly maintained.
Tips to Keep Your Centrale Heat Pump in Perfect Condition
To avoid the issues faced by this client, here are some tips:
- Clean filters regularly: Dirty filters can severely impact performance.
- Schedule annual maintenance: Professional check-ups help identify and fix potential problems early.
- Monitor refrigerant levels: Ensure there are no leaks and the system is properly charged.
- Inspect electrical components: Loose connections can cause intermittent failures.
Trust AirGreen for All Your HVAC Needs
This service call in Laval is just one example of how we go above and beyond for our clients. Whether it’s for repair, installation, or regular maintenance, AirGreen is here to provide reliable, professional, and efficient service.
Contact us today to schedule your service call and experience the AirGreen difference!
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.
- 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.
Four statements: true or false?
It all comes down to details you have just seen.
1. A central heat pump uses the house's ducts.
It connects to the existing ducts to heat and cool everywhere.
2. In extreme cold, electric backup heat can take over.
The indoor module (furnace or air handler) works with the heat pump and takes over in extreme cold.
3. The filter only gets changed when the unit breaks down.
A dirty filter cuts airflow. It gets checked regularly.
4. You can reuse the old unit's size without checking.
The house may have changed: insulation, windows, added rooms. Capacity is confirmed on site.
0 / 4 right answers
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).