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Réparation d’un PTAC Friedrich à Westmount
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Repair of a Friedrich PTAC in Westmount

Comfort restored in a Westmount condo thanks to targeted intervention

At AirGreen , we were recently called for HVAC repair service in an elegant condo in Montreal's Westmount neighborhood. The owner reported that his Friedrich PTAC , installed under his bedroom window, was making an unusual noise and was no longer blowing cold air, even though the unit was running. With the summer season well underway, the problem needed to be addressed quickly to restore a comfortable indoor climate.

Diagnosis: Excessive vibrations and dust accumulation

Upon our arrival, our certified technician performed a complete diagnostic. The Friedrich PTAC (Packaged Terminal Air Conditioner) is a self-contained system very common in apartment buildings and condos, as it combines heating and air conditioning in a single wall-mounted unit.

After opening the front panel, we identified several probable causes:

  • A significant accumulation of dust and lint on the evaporator and condenser.

  • An unbalanced fan motor , causing vibrations and a constant whistling noise.

  • Bent condenser fins , reducing airflow and heat removal.

By taking pressure and temperature measurements, we confirmed that the compressor was working properly , but the lack of airflow was preventing the system from maintaining its cooling capacity.

Intervention: deep cleaning and realignment of the engine

To restore the system to optimal condition, our team carried out a complete on-site intervention :

  1. Disassembly and extraction of the Friedrich PTAC unit from its chassis for full access to the internal components.

  2. Cleaning the condenser coil with a specific detergent for aluminum fins.

  3. Thorough dusting of the tangential fan and lubrication of the motor shaft.

  4. Engine realignment and anti-vibration mounting to eliminate noise.

  5. Straightening the fins using a thermal comb to restore optimal airflow.

  6. Final performance test : verification of airflow, evaporating temperatures and noise level.

After repositioning, the unit restarted silently, providing air at a stable and constant 17°C , a sign of efficient heat exchange.

Result: energy efficiency and silence restored

Thanks to this targeted repair, the Friedrich PTAC has regained its original efficiency. The customer immediately noted:

  • A noise reduction of more than 50%.

  • More stable energy consumption , the compressor no longer switches on as frequently.

  • Rapid room cooling , even in the middle of the afternoon.

We also installed a new air filter and recommended preventive cleaning at each change of season.

Why use AirGreen for your PTAC systems in Montreal?

PTAC and VTAC units , often used in condos, offices and hotels, require rigorous maintenance to maintain their performance. At AirGreen , our technicians have in-depth expertise on all popular brands such as Friedrich, Amana, GE and LG , and respond quickly throughout the Greater Montreal area, including Laval, Longueuil, the North Shore and the South Shore .

We carry out:

  • Repair of motors and electronic cards .

  • Complete cleaning of coils and fans .

  • Refurbishing seals and frames to prevent air leaks.

  • Energy optimization of existing systems.

Each intervention is accompanied by a detailed report , guaranteeing transparency and satisfaction.

Conclusion: AirGreen service that lives up to the comfort of Westmount

With our expertise and specialized tools, we were able to bring a Friedrich PTAC system back to life when it looked like it was ready for replacement. This project once again demonstrates AirGreen 's ability to diagnose, repair, and optimize even the most complex residential and commercial HVAC systems .

At AirGreen, we believe that a comfortable indoor climate is not a luxury, but a necessity. And that's exactly what we offer, day after day, throughout Greater Montreal.