Home » Some of Our Service Calls in Greater Montreal » Heat Pump Repair Call for a Haier Wall-Mounted Unit in Notre-Dame-de-Grâce
Intervention de réparation sur une thermopompe murale Haier à Notre-Dame-de-Grâce
Reading time: 4'

Heat Pump Repair Call for a Haier Wall-Mounted Unit in Notre-Dame-de-Grâce

When an Aging Heat Pump Affects Comfort: Our Effective Repair Service in NDG

At AirGreen, every service call is an opportunity to restore life to a CVAC system and bring back daily comfort to our clients. Recently, we were called to a Haier wall-mounted heat pump repair in a residential unit in the Notre-Dame-de-Grâce (NDG) neighborhood of Montreal. This aging unit, installed over a decade ago, showed clear signs of wear—both aesthetically and functionally.

Our goal: to quickly diagnose the issue, evaluate the viability of repairs, and get the system up and running in the best possible condition.

Initial Assessment: A Neglected Unit with Clear Signs of Wear

Upon arrival, we observed several concerning elements:

  • Notable discoloration of the casing (plastic yellowing) — a clear sign of prolonged exposure to sunlight and plastic aging.

  • Airflow grill obstructed by dust and dirt, which reduces air quality and hinders the system's performance.

  • Water leakage near the unit, suggesting a potential issue with the condensate drain or an internal blockage.

  • Irregular cooling performance, as reported by the client—sometimes the air was lukewarm, sometimes cold.

Comprehensive Technical Diagnosis by Our Experts

Our certified technicians performed a thorough diagnosis:

  1. Air filter and evaporator coil check: the filters were clogged with fine particles. The evaporator coil was dirty, which compromised thermal efficiency.

  2. Fan motor inspection: abnormal vibrations and a sluggish motor, likely caused by lack of maintenance.

  3. Condensate pan and drainage pipe inspection: buildup of mold and algae in the drain, causing water to back up into the unit.

  4. Sensor and control board check: intermittent temperature readings, caused by a faulty thermal sensor.

  5. Refrigerant pressure test: acceptable gas levels, no signs of leakage detected.

Solutions Proposed by AirGreen

Given these findings, we recommended a three-part intervention:

  • Complete cleaning of the indoor unit, including the coil, condensate pan, and drainage system.

  • Replacement of the internal temperature sensor, ensuring accurate and consistent ambient temperature readings.

  • Lubrication and realignment of the fan motor, to extend its lifespan and eliminate vibrations.

Once the repairs were completed, we tested the unit through a full heating and cooling cycle. The result: regular airflow, stable temperature, and proper water drainage.

Advice Given to the Client: Maintain Rather Than Replace

Although the unit was aging, it remained functional after our intervention. We informed the client that this Haier heat pump was approaching the end of its useful life and that replacement options with newer, more energy-efficient models should be considered in the near future.

We also recommended:

  • Annual professional CVAC maintenance, including complete cleaning, component checks, and calibration.

  • The installation of a washable electrostatic filter, which is more durable and efficient.

  • A consultation for a potential replacement with a Fujitsu or Gree wall-mounted heat pump, eligible for LogisVert grants.

Result: Comfort Restored and a Satisfied Client

The client, relieved to have avoided an immediate replacement, expressed satisfaction with our transparency, expertise, and professionalism. Thanks to our wall-mounted heat pump repair in Notre-Dame-de-Grâce, we were able to extend the life of the unit while restoring optimal comfort.

At AirGreen, we believe that reliable CVAC service comes from listening to needs, technical precision, and clear recommendations. This intervention is a perfect example.

Why Choose AirGreen for Your Heat Pump Repairs in Montreal?

  • Certified technicians specializing in heat pump repairs in Montreal, Laval, Longueuil, North Shore, and South Shore.

  • Expertise with Haier, Fujitsu, Gree, Sharp, LG, Daikin, and more.

  • Fast, transparent service with attention to detail at every step.

  • Honest advice on whether to repair or replace, based on your equipment’s condition.

Notice a Drop in Performance or Hearing Strange Noises?

Contact AirGreen today for a quick inspection and repair of your wall-mounted unit. We serve all neighborhoods in Montreal, including NDG, Côte-des-Neiges, Outremont, Verdun, Rosemont, and more.