Goodman central heat pump repair on a residential roof in Rosemont–La Petite-Patrie

In this project in Rosemont–La Petite-Patrie , our AirGreen team repaired a Goodman central heat pump installed on the roof of a multi-unit residential building (plex/condo). The dense urban environment, flat gravel roofs, and multiple HVAC units on the same roof are typical of this area of ​​Montreal.

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Context and system type

The building is equipped with a Goodman central heat pump , connected to an indoor air management system and a network of ducted units. This type of system is common in Montreal multi-family buildings, as it allows for the efficient heating and cooling of several spaces from a single outdoor condenser.

Since the exact model is not clearly visible in the photos, we are dealing with a recent generation Goodman central heat pump , compatible with rooftop installations and designed to withstand Quebec's climatic conditions.

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Problem detected during the service call

The client contacted us regarding the following symptoms:

• Significant loss of air conditioning performance

• Irregular operating cycles

• Unusual noises coming from the outdoor unit

• Indoor temperature difficult to stabilize

These signs suggested a problem with both the electrical and refrigeration systems , possibly exacerbated by constant exposure to the elements on the roof.

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Complete diagnosis carried out by AirGreen

Once on site, our technicians carried out a thorough inspection:

• Checking the electrical connections in the external housing (for signs of wear and oxidation due to humidity)

• Refrigerant pressure control

• Visual inspection of insulated refrigeration lines

• Condenser and compressor fan test

• Validation of air clearance around the unit (important on rooftops)

The diagnosis confirmed:

• A weak electrical connection causing intermittent outages

• Pipe insulation partially degraded by sun and frost

• An early pressure imbalance affecting overall performance

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Repair work carried out

We carried out the following interventions:

• Complete restoration of electrical connections in the service box

• Securing and sealing cable entry points

• Replacement and improvement of refrigeration line insulation

• Adjustment of operating parameters and testing under real load

• Final check of the heating/cooling cycle

All work was carried out in compliance with safety standards for roof work , with adequate stabilization of the unit on its treated wooden supports.

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Final result for the client

After the repair:

• The Goodman central heat pump operates smoothly and stably

• Thermal comfort has been restored throughout the entire dwelling.

• The cycles are shorter and more efficient

• The noise level has returned to normal.

• The customer benefits from improved energy efficiency and increased peace of mind.

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Why entrust the repair of your central heat pump to AirGreen?

At AirGreen , we regularly work on complex installations: rooftops, multi-family buildings, central systems, and demanding urban environments. Our approach is based on:

• A precise diagnosis , never an approximate one.

• Sustainable repairs adapted to Montreal's climate

• Concrete expertise from brands like Goodman

• Clear and professional communication with our clients

Whether it's for an urgent repair, preventative maintenance or a complete evaluation of your HVAC system, our team is ready to intervene effectively in Rosemont–La Petite-Patrie and throughout Greater Montreal.