Job sheet · Repair

Repair of an Elios Wall-Mounted Heat Pump in Mercier

AirGreen repaired an Elios wall-mounted heat pump in Mercier by fixing a refrigerant leak. Discover how we restored its efficiency and ensured customer comfort. Reliable HVAC service in Montréal, Laval, and across North Shore/South Shore.

By AirGreen Climatisation & Chauffage Admin3 min read
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At a glance

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The full story

The article, chapter by chapter

At AirGreen, we take pride in our expertise in heat pump repairs and other HVAC (heating, ventilation, and air conditioning) services throughout the Montréal, Laval, Longueuil, and the North Shore and South Shore regions. Our skilled and experienced technicians are always ready to resolve your equipment issues quickly and effectively. Today, we’re sharing the story of a recent service call for an Elios wall-mounted heat pump in Mercier, where our team was able to intervene and restore the client’s comfort.

A Common Issue with Elios Wall-Mounted Heat Pumps

During our visit to Mercier, the owner of an Elios wall-mounted heat pump reported a malfunction affecting the performance of the unit. Although the heat pump initially seemed to work, there was a loss of refrigerant pressure, which was impacting its efficiency. This type of issue is fairly common when leaks or blockages occur in the cooling system, directly affecting the unit's ability to maintain a consistent temperature.

Thorough Inspection and Diagnosis

Upon arrival, our technician conducted a thorough inspection of the unit to identify the underlying cause. The outdoor unit was clearly affected by a refrigerant leak, as evidenced by the low pressure in the lines. The service hoses were connected to a refrigerant bottle to precisely test and retrieve data from the system.

Issue Identified: Refrigerant leak in the closed circuit of the heat pump, preventing the unit from operating at optimal efficiency.

The Solution: Professional Repair and Refrigerant Recharge

Once the problem was identified, our technicians immediately began repairing the leak. This step is crucial because even a small leak can quickly degrade the unit’s performance. After locating and fixing the leak, the system was fully recharged with the necessary refrigerant. Our team always ensures to check refrigerant levels and test the lines again to prevent any future leaks.

Results and Customer Satisfaction

Once the repairs were completed, the Elios wall-mounted heat pump was operating as good as new. The client expressed their satisfaction with the speed and efficiency of our intervention, highlighting the importance of having a reliable and functional system for their home comfort. Thanks to this repair, the client was able to enjoy a comfortable indoor temperature even in the middle of the winter season.

This intervention also helped prevent potential prolonged damage to the unit, which could have led to more expensive repairs in the future. The work done not only restored the unit’s performance but also extended its lifespan.

Why Choose AirGreen for Your HVAC Repairs?

At AirGreen, we are committed to providing high-quality HVAC services based on in-depth technical expertise and a dedication to customer satisfaction. Every intervention is carried out with precision and professionalism, and we use only the highest-quality replacement parts to ensure the longevity of your equipment. Whether you're in Montréal, Laval, Longueuil, or the North Shore and South Shore, we’re here to meet your needs with reliability and speed.

We understand how important it is to keep your wall-mounted heat pump in excellent working condition, and we strive to solve every issue promptly. Our team also offers helpful advice to improve the energy efficiency of your system, allowing you to make long-term savings.

Conclusion

The repair of this Elios wall-mounted heat pump in Mercier not only restored the client’s comfort but also underscored the importance of regular heat pump maintenance. Thanks to our experienced team and our commitment to quality, you can be assured that your HVAC equipment is in good hands.

The steps

How the job unfolds

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.
The tour

What we check on a job like this one

Each number is a point we check on site. Switch between summer and winter to watch air and heat move.

Generic diagram: wall-mounted heat pump, indoor and outdoor units

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. 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.

  2. The refrigerant lines, the communication cable and the drain go through the wall in a single opening, sealed against water, cold air and insects.

  3. Two insulated copper pipes connect the two units. Outside, a line cover can protect them from sun, knocks and weather.

  4. A shut-off switch near the outdoor unit isolates it safely for service. It must stay accessible at all times.

  5. The compressor and the fan. In heating mode it captures heat from the outdoor air, even in winter, and moves it inside.

  6. On the ground or on the wall, it keeps the unit above accumulated snow. The unit stays clear and defrost water can drain away.

  7. The fan needs to blow freely. Storage, a fence or a wall too close, and efficiency drops while noise goes up.

Maintenance

Good habits, once the unit is in place

Six simple habits that keep the unit going. Your list stays on this device.

0 / 6 checked
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.

  • Clean the indoor unit's filters.
  • Clear leaves and debris left on the outdoor unit by winter.
  • Test cooling before the first hot days.
For your project

The right pages, at the right time

True or false

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.

2. You pick the capacity with a simple square-footage rule.

3. A multi-zone connects several indoor heads to a single condenser.

4. The disconnect can sit behind the patio furniture.

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.
Does a wall-mounted heat pump heat in winter?
Yes, it heats and cools. Its capacity drops in very cold weather; the operating range depends on the model and is listed on its spec sheet.
Wall-mounted or multi-zone: how do I choose?
One wall head and one condenser outside: the direct solution for a room or an open area. For two to five rooms, a multi-zone puts one head in each room on a single condenser.
Where does the outdoor unit go?
Where it stays above the snow, clear and accessible, away from walkways. We decide it with you during the estimate.
Are there grants?
Depending on the model and your situation, assistance programs may apply, including Hydro-Québec's LogisVert. AirGreen checks the model number before quoting an amount. See the grants.
Do I need a permit?
Rules vary from city to city: location, distances, noise. 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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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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