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Réparation d’une thermopompe centrale Arcoaire à Sainte-Thérèse
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Repair of an Arcoaire central heat pump in Sainte-Thérèse

An intervention under an exterior staircase: a precision challenge

One sunny afternoon in Sainte-Thérèse , our team was called regarding a performance issue with an Arcoaire central heat pump installed at the rear of a single-family home. The outdoor unit, well protected under a metal staircase, appeared to be working but was no longer producing enough heat in heating mode. The customer also noticed an abnormal noise when the compressor was turned on and a significant increase in his electricity bill .

This type of situation is typical of residential installations where the restricted space and lack of ventilation around the condenser can affect the overall performance of the system.

Diagnosis: loss of efficiency due to a problem with pressure and airflow

After a thorough inspection, our technicians quickly identified several factors affecting the performance of this Arcoaire central heat pump :

  1. Debris buildup on the upper grille — leaves and dust were partially obstructing the fan's airflow.

  2. Condenser slightly dirty , reducing the efficiency of heat exchange.

  3. Abnormal refrigerant pressure , suggesting a microleak in the refrigeration circuit.

  4. Unbalanced exterior fan , causing vibrations and a clicking noise every time it is started.

Using AirGreen diagnostic equipment, including a digital pressure gauge and an electronic leak detector, our technicians were able to confirm that the refrigerant loss was coming from a flare fitting weakened by time and thermal variations.

Complete repair carried out on site

The intervention was carried out with care to guarantee the durability and safety of the system:

  • Complete cleaning of the condenser using a specialized biodegradable product for exchanger fins.

  • Remove the top cover to rebalance the fan and tighten the fasteners.

  • Flare fitting repair : cleaning, replacing the sealing ring, tightening to the exact torque recommended by Arcoaire.

  • Recharge the system with R-410A refrigerant , according to the manufacturer's specifications.

  • Checking pressures and energy efficiency using an infrared thermometer and a digital pressure gauge.

  • Complete testing in heating and cooling modes , ensuring a smooth and quiet transition.

Results: comfort restored and efficiency optimized

At the end of the intervention, the Arcoaire heat pump returned to its nominal performance. The compressor was now operating without excessive noise, and measurements indicated a heating efficiency 22% higher than the initial reading.

The client immediately noticed a constant, warmer airflow through their interior duct system, a sign that the refrigerant pressure and flow were once again balanced. We also recommended preventative maintenance in the spring and fall to prevent debris from accumulating under the stairs, a common cause of overheating.

Why choose AirGreen for your central heat pump repairs?

At AirGreen , we know that central systems like those from Arcoaire, Goodman, Lennox, Trane or Comfortmaker require special attention. Their performance depends not only on the quality of the compressor, but also on the cleanliness of the condenser, the correct calibration of the fan and compliance with operating pressures.

Our certified technicians have:

  • Latest generation diagnostic equipment .

  • In- depth training on North American brands like Arcoaire.

  • Local expertise to work in all residential configurations of Greater Montreal , whether on the North Shore, in Laval, or on the South Shore .

Recommended maintenance for Arcoaire central heat pumps

To avoid breakdowns and extend the life of your unit:

  1. Clean the condenser at least twice a year (in spring and fall).

  2. Keep the space clear around the unit (minimum 60 cm on each side).

  3. Have refrigerant pressures checked by an AirGreen technician once a year.

  4. Watch for unusual noises : these are often the first signs of mechanical imbalance.

These simple actions guarantee stable performance and minimal energy consumption.

AirGreen: Your Trusted HVAC Partner in Sainte-Thérèse and Throughout Greater Montreal

Every AirGreen intervention reflects our commitment to efficiency, transparency and customer satisfaction . Whether you need an urgent repair , preventative maintenance or a complete replacement of your central heat pump , our team will support you with professionalism.

Thanks to our experience in the field, we understand the climatic realities of Quebec and adapt each solution to your residential needs.