Home » Some of Our Service Calls in Greater Montreal » Repair of a Fujitsu wall-mounted heat pump in Outremont
Réparation d’une thermopompe murale Fujitsu à Outremont
Reading time: 4'

Repair of a Fujitsu wall-mounted heat pump in Outremont

When a Fujitsu's performance slows down: our expert intervention

At AirGreen , we often receive calls from customers whose Fujitsu wall-mounted heat pump seems to be losing performance after several years of service. This is exactly what happened in Outremont , in a charming, typically Montreal duplex where the customer noticed that her unit was no longer cooling as efficiently as before, despite regular maintenance.

Initial diagnosis: a progressive loss of performance

Upon arrival, we noticed that the Fujitsu Halcyon HFI outdoor compressor was showing reduced efficiency. The signs were clear:

  • Insufficiently cool air temperature at the outlet of the indoor unit

  • Irregular ventilation

  • Excessive condensation on the copper line

We began with a thorough inspection of the refrigeration circuit and electrical connections. The refrigerant level was low, suggesting a micro-leak in the system. A slow leak, often imperceptible to the naked eye, can cause a gradual drop in performance and increase energy consumption.

Step 1: Leak Test and Source Detection

Our certified technicians used an electronic leak detector and a fluorescent tracer . After a few minutes of analysis, the source of the problem was identified: a slightly cracked connection at the compressor outlet. This anomaly can appear over time, due to the natural mechanical vibrations of the device.

Step 2: Repair the connection and recharge the system

We have :

  1. Replaced the faulty fitting with a new, high quality gasket.

  2. Performed a leak test under nitrogen for 30 minutes to ensure the integrity of the circuit.

  3. Complete recharge with R410A refrigerant , according to the specifications of the manufacturer Fujitsu.

Once these steps were completed, the system pressure stabilized and the evaporating and condensing temperatures returned to nominal values.

Step 3: System Cleaning and Calibration

Before putting the heat pump back into service, we:

  • Cleaned the outdoor condenser , clogged with dust and pollen.

  • Checked the electronic control board , which was working normally.

  • Adjusted the indoor temperature detection settings .

These adjustments have made it possible to optimize the operating cycle and guarantee maximum energy efficiency .

Result: comfort restored and efficiency regained

As soon as the procedure was over, the client noticed a notable difference:

  • The air came out cooler and more constant.

  • The unit's noise level had decreased.

  • And above all, energy consumption had returned to normal values.

Thanks to our intervention, the Fujitsu Halcyon HFI heat pump has regained its full efficiency, extending its lifespan and ensuring stable comfort in all seasons.

Why use AirGreen for your Fujitsu system in Montreal?

Fujitsu systems are renowned for their reliability and performance in the Montreal climate, but they require rigorous maintenance and precise know-how to maintain their efficiency.
At AirGreen, we are an authorized Fujitsu reseller and installer , and our technicians are experts in the specific features of each series, whether it is the Halcyon HFI, MultiZone or compact wall-mounted models.

We offer:

  • Fast service in Montreal, Laval, Longueuil, the North Shore and the South Shore.

  • Guaranteed original Fujitsu parts .

  • Professional diagnosis with detailed technical report.

  • Annual preventive maintenance to prevent leaks and extend the life of your appliances.

AirGreen Expert Advice

To avoid premature breakdowns:

  • Have your heat pump inspected every spring and fall .

  • Keep filters clean and the condenser clear of debris.

  • Avoid installations too close to a wall or obstacle.

  • Monitor for any performance variations, unusual odors or noises.

A slow leak, if not detected in time, can not only reduce efficiency , but also damage the compressor , leading to more expensive repairs.

At AirGreen , we believe that a well-performed repair is, above all, a trustworthy service . This service in Outremont is a great example: a refurbished Fujitsu heat pump , a satisfied customer , and restored comfort —all thanks to technical expertise and careful monitoring.