Repair

Repair of a Central Heat Pump in Lachine – Electric Furnace and Air Handler

Discover how AirGreen repaired a central heat pump and air handler in Lachine, ensuring optimal comfort for the client. We offer HVAC troubleshooting services on Montreal’s South and North Shores.

By AirGreen Climatisation & Chauffage Admin3 min read
Repair of a Central Heat Pump in Lachine – Electric Furnace and Air Handler
Repair of a Central Heat Pump in Lachine – Electric Furnace and Air Handler
–chapters in this story
3 minreading time
–type of installation
2025year published
The tour

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.

Generic diagram: central heat pump, indoor module and ducts

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.

  1. It captures or rejects heat outside. It sits on a level base, above the snow, with free space all around.

  2. The insulated refrigerant lines enter the house through a sealed opening and run to the indoor coil.

  3. A shut-off switch near the outdoor unit isolates it safely for service.

  4. Sitting on the indoor module, it moves heat between the house air and the refrigerant.

  5. Electric furnace or air handler: its fan pushes air through the ducts. The electric backup takes over in extreme cold.

  6. Supply ducts bring air to the rooms; returns bring it back to the unit. Their condition matters as much as the unit's.

  7. It protects the coil and the fan. A dirty filter cuts airflow, so it gets checked regularly.

  8. It runs the heat pump and the backup heat. It must be compatible with the installed system.

The job

At AirGreen, we know how crucial it is to have a properly maintained heating, ventilation, and air conditioning (HVAC) system to ensure optimal comfort at home or in the office. Recently, our team responded to a service call in the city of Lachine, where a client was experiencing issues with their central heat pump and air handler. This type of repair requires in-depth expertise and specific know-how, especially when dealing with essential HVAC components such as the electric furnace and the air handler.

Problem Identified During the Service Call

The client had noticed that the interior temperature of their house was uneven, with some rooms much colder than others. After inspecting the system, our technicians determined that the issue was related to the central heat pump and the air handler of the furnace. This kind of problem can occur for several reasons: blockages in the ducts, electrical problems, or failures in the control circuits.

After a thorough diagnosis, it was discovered that the air handler filters were clogged and that electrical connections in the control system of the heat pump had failed. These issues were affecting the overall operation of the system, preventing warm air from circulating efficiently.

Steps Taken for the Repair

Our priority at AirGreen is to provide fast and efficient solutions, making sure that every detail is taken care of to restore our clients' comfort.

  1. Initial Inspection and Diagnosis: Our technicians began by inspecting the entire HVAC system, checking the electrical connections, pipes, and filters.

  2. Cleaning and Replacing Filters: The filters of the air handler were carefully cleaned to remove dust and debris blocking the airflow. If necessary, we also replaced the filters to ensure optimal air quality.

  3. Repairing Electrical Connections: Once the power supply issue was identified, our experts repaired the faulty connections in the control system.

  4. Testing and Verification: After completing the necessary repairs, we tested the system to ensure the heat pump and air handler were working correctly. Our technicians checked the flow of warm air throughout all the rooms and adjusted settings to ensure maximum performance.

Results and Customer Satisfaction

Thanks to the expertise of our team and a prompt intervention, we successfully resolved the issues with the central heat pump and restored the client's comfort. The heating system is now operating optimally, and the house is once again heated evenly. The client was particularly pleased with the speed of our service and the clarity of the explanations provided during the intervention.

Tips for Maintaining Your Heat Pump and Air Handler

To avoid similar issues in the future, we recommend regular maintenance of your HVAC system, particularly the central heat pump and air handler. Here are some practical tips:

  • Check and Replace Filters Regularly: Clogged filters can reduce the efficiency of your system and affect air quality.

  • Inspect Electrical Connections: Faulty connections can lead to inefficiency and breakdowns.

  • Call a Professional for Annual Maintenance: Professional maintenance helps identify and fix issues before they become serious.

At AirGreen, we offer complete HVAC repair services, including maintenance and repair of central heat pumps, air handlers, and other heating and cooling systems. If you're experiencing similar issues in Lachine or the surrounding areas, feel free to contact us for a full evaluation and quick intervention.

The steps

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.

Step 1 of 6Your call

The symptoms, since when, the model (on the unit's label) and the error code if there is one.

  1. Your callThe symptoms, since when, the model (on the unit's label) and the error code if there is one.
  2. On-site diagnosisWe look for the cause, not just the symptom: readings, components, installation.
  3. The optionsRepair, part to order or replacement, depending on the failure. We explain what we found.
  4. The workThe repair is done and parts replaced as needed.
  5. TestsThe unit is restarted and checked in its operating modes.
  6. AdviceWhat caused the failure and what can keep it from coming back.
Going further

Your own project, step by step

Through the seasons

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.
True or false

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.

2. In extreme cold, electric backup heat can take over.

3. The filter only gets changed when the unit breaks down.

4. You can reuse the old unit's size without checking.

Frequently asked questions

What people ask us about this kind of work

9 questions
What should I have ready before calling?
The model (on the unit's label), the error code if there is one, the symptoms and how long they have lasted.
Repair or replace?
It depends on the unit's age, the failure and the cost of parts. We present the options after the diagnosis.
Can I keep my current ducts?
Often, yes: the central heat pump connects to the existing ducts. We check their condition and size during the estimate.
What happens in extreme cold?
The indoor module (furnace or air handler) works with the central heat pump and takes over in extreme cold.
Furnace, air handler, ducted: what is the difference?
The furnace or air handler is the indoor module of the central system. A ducted system hides in the ceiling: all you see are small supply grilles.
Are there grants?
Depending on the equipment and your situation, assistance programs may apply. AirGreen checks the exact combination before quoting an amount. See the grants.
Do I need a permit?
Rules vary from city to city. See permits and by-laws, and we check for your address.
Does AirGreen hold the required licences?
Yes. AirGreen holds RBQ licence 5645-9605-01, subclasses 15.8 Ventilation, 15.10 Refrigeration and 16 Electricity.
Is the estimate free?
Yes. The on-site estimate is free and the quote follows within 24 hours. Book my free estimate.

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  • RBQ licence5645-9605-01 · 15.8, 15.10, 16
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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).

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