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Une intervention rapide et efficace au cœur d’Outremont
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A quick and efficient service call in the heart of Outremont

In the quiet residential neighbourhood of Outremont, our AirGreen team was recently called in for a service call involving a wall-mounted heat pump from the Kreeg brand. In the middle of the Montréal winter, with festive decorations still adorning the client’s Christmas tree, they noticed a heating issue in their main living room. The heat pump was intermittently displaying an error code and blowing lukewarm air, even though the temperature setting was high.

Service context: a Kreeg wall-mounted heat pump in a cozy setting

The unit installed on the living room wall was a Kreeg wall-mounted heat pump, 18,000 BTU model, serving as the primary heating source for this family’s main living area. The equipment was relatively recent, installed about 3 years ago, but had never received any professional maintenance since installation.

We were contacted on a cold January morning by the homeowner, who was concerned about the drop in performance. They feared the heat pump would no longer be able to maintain a comfortable temperature during the coldest nights. This type of situation is common in Montréal and on the North Shore during winter, and we know just how important it is to respond quickly.

Detailed on-site diagnosis

Upon arrival, our certified technician carried out a full inspection:

  • Filter check: heavily clogged, restricting airflow.

  • Inspection of the indoor unit’s coils: covered with a fine layer of dust, affecting thermal transfer.

  • Error code analysis displayed on the LED panel: it indicated a communication issue between the indoor and outdoor units.

  • Refrigerant pressure measurement: slightly below normal, though not indicative of a major leak.

  • Temperature sensor check: one sensor was improperly secured, causing inaccurate room temperature readings.

Repairs completed by our AirGreen team

Our experts followed a step-by-step process to restore the Kreeg wall-mounted heat pump to optimal working condition:

  1. Complete cleaning of air filters and the evaporator coils.

  2. System reset and firmware update of the main control board.

  3. Securing and repositioning of the temperature sensor to ensure accurate readings.

  4. Inspection and tightening of electrical connections between the indoor and outdoor units.

  5. Recharging the system with R-410A refrigerant to restore correct pressure levels.

All work was completed in just under two hours. The system was then tested for 30 minutes in heating mode: the ambient temperature rose by 3.5°C in 25 minutes, showing that the heat pump was once again fully operational.

Comfort restored: a satisfied client in Outremont

At the end of our visit, the client told us they had already started considering replacing the system, assuming that a relatively new unit shouldn't be causing this kind of issue. We took the time to explain the importance of preventive maintenance, especially with the climate fluctuations in Montréal.

Thanks to our fast service and educational approach, the client not only had a fully functioning system again, but also peace of mind. They immediately signed up for our AirGreen annual maintenance plan, which guarantees a full inspection of the unit twice a year.

Key takeaways from this service call

Lessons learned from this Kreeg wall-mounted heat pump repair

  • Even a newer system can develop issues if not regularly maintained.

  • Intermittent error codes should be taken seriously: they’re often early signs of more serious problems.

  • A single misplaced sensor can disrupt the energy efficiency of an entire system.

  • Regular filter and coil cleaning is essential, especially in urban areas like Montréal, Laval, and Longueuil, where dust builds up quickly.

AirGreen expertise at the service of Outremont residents

At AirGreen, we take pride in offering fast, transparent, and effective HVAC repair services. Our technicians are trained to work on all major heat pump brands, including lesser-known ones like Kreeg, ensuring optimal reactivation of systems at every visit.

We serve the entire Greater Montréal area, including the South Shore and North Shore, with the same level of professional care. Our interventions go beyond “just fixing”—we aim to optimize your system’s energy performance and extend its service life.

Why choose AirGreen for your HVAC repairs?

  • Certified multi-brand expertise: we’re experienced with all major HVAC technologies, including Kreeg, Fujitsu, Gree, Bosch, Goodman, and more.

  • Fast residential service: we often respond the same day you call.

  • Transparency: clear explanation at each step, no hidden fees.

  • Warranty on parts and labour.

In conclusion: a quality intervention that made the difference

This service call in Outremont perfectly illustrates our approach: responsiveness, expertise, transparency, and a commitment to customer comfort. A Kreeg wall-mounted heat pump that seemed on its last legs was brought back to peak performance, without the need for costly replacement, thanks to targeted maintenance and expert repair.

At AirGreen, we don’t just repair—we bring your HVAC systems back to life, respecting your comfort and your budget.