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Réparation d’un échangeur d’air Venmar Constructo 1.0 à Beaconsfield
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Repair of a Venmar Constructo 1.0 air exchanger in Beaconsfield

A crucial service call to ensure healthy ventilation

At AirGreen , we know that a high-performance air exchanger is essential to maintaining optimal air quality in modern Quebec homes, particularly in newer, highly airtight constructions. Recently, we were called to Beaconsfield , in the West Island of Montreal, for a breakdown of a Venmar Constructo 1.0 air exchanger that was no longer functioning properly.

The owner noticed a lack of air exchange , excessive condensation on the windows and a musty smell in the house. These signs clearly indicated a problem with controlled mechanical ventilation .

Initial inspection: symptoms and precise diagnosis

Our technician visited the site to perform a complete evaluation of the Venmar AVS Constructo 1.0 system , a heat recovery air exchanger (HRV) suspended from the basement ceiling, connected to four flexible ducts.

From the first checks, several points were noted:

  • The exhaust fan motor would no longer start.

  • The condensation drain was showing signs of obstruction.

  • A buildup of dust and debris inside the unit was reducing airflow.

  • The differential pressure sensor was showing an abnormal value, preventing the full cycle from activating.

These observations pointed to a failure of the motor of one of the two fans combined with insufficient maintenance of the system .

Intervention: complete repair and deep cleaning

After cutting off the power supply, our team carried out a series of careful operations:

  1. Removing the front panel to access the fans.

  2. Disassembly of the extraction motor to test the electrical continuity and the condition of the starting capacitor.

  3. Replacement of the defective motor with an original Venmar motor, compatible with the Constructo 1.0 model.

  4. Complete cleaning of the internal ducts , the exchanger core and the housing.

  5. Disinfection of the condensation drain and restoration of the evacuation.

  6. Replacement of the air filter , which was saturated.

  7. Pressure sensor test and control module reset.

Once the repair was completed, the system was powered back up. Both fans began to operate smoothly and quietly. The measured airflow at the outlet was perfectly within the manufacturer's specifications.

Result: healthy air and restored energy efficiency

After the intervention, the difference was immediate:

  • Stabilized indoor humidity , eliminating condensation on windows.

  • Significant improvement in air quality , with disappearance of odors.

  • Quieter operation and balanced between incoming and outgoing air.

  • Optimized energy efficiency , since heat recovery is once again operating at full potential.

The customer expressed his relief: his system, inactive for several weeks, has once again become an essential ally for indoor comfort , especially during the harsh winters of Greater Montreal.

Technical details of the intervention

  • Brand: Venmar AVS

  • Model: Constructo 1.0 HRV

  • Type: Heat recovery air exchanger

  • Problems detected: defective extraction motor, clogged drain, saturated filters

  • Solution: Engine replacement, complete cleaning, complete preventative maintenance

  • Result: Airflow restored, condensation eliminated, original performance restored

Best practices for extending the life of an air exchanger

At AirGreen , we recommend that all our customers follow these preventative maintenance rules :

  • Clean the filters every 3 months (or more often during renovation or heavy use).

  • Check and clean the condensation drain twice a year.

  • Have the motors and recovery core inspected annually by a certified technician.

  • Avoid blocking ventilation vents in rooms to avoid disrupting the airflow.

  • Schedule a complete maintenance before each winter, when indoor air becomes drier and ventilation is essential.

AirGreen: Your trusted partner for ventilation systems in Beaconsfield and Greater Montreal

Thanks to our experience in repairing, installing and maintaining residential HVAC systems , we ensure the proper functioning of Venmar, Aldes, Lifebreath, Fantech and Panasonic air exchangers . Our interventions are recognized for their technical rigor , their transparency and their compliance with energy performance standards .

Whether in Beaconsfield , Pointe-Claire , Kirkland or elsewhere on the West Shore , our teams intervene quickly to guarantee efficient, quiet and long-lasting ventilation .

AirGreen – Experts in maintenance and repair of Venmar air exchangers in Montreal, Laval, Longueuil, North Shore and South Shore.