Installation of a Gree FreeMatch R32 MultiZone heat pump in Chomedey (Laval)

A complete and scalable HVAC modernization for a Laval home

At AirGreen , we have just completed the HVAC installation of a Gree FreeMatch R32 MultiZone heat pump in a residential area of ​​Chomedey (Laval) . The home, a light brick house with a backyard and wooden balcony, required a solution that combines efficient heating and cooling , precise room-by-room air conditioning , and controlled consumption . The FreeMatch R32 platform was the obvious choice: it allows several indoor heads to be powered with a single compact outdoor condenser , for customized comfort and a reduced visual footprint.

Project context and client objectives

The owner wanted:

• Standardize comfort upstairs and downstairs.

• Reduce reliance on electric baseboard heaters.

• Preserve the aesthetics of the facade and the floor space.

• Choose a scalable solution, capable of accepting an additional head later.

Our recommendation: a Gree FreeMatch R32 MultiZone heat pump (2 to 4 zones), sized to cover the main living areas, with a reserve capacity for a future room.

Outdoor installation: performance and discretion

The outdoor unit is fixed on galvanized wall brackets , at a height calculated for:

• clear snow drifts in winter and facilitate flow;

• promote air circulation around the exchanger;

• protect the device from shocks and ground moisture.

The refrigerant lines run laterally along the masonry, then penetrate the partition near the rear staircase to reach the interior heads by the shortest route. We installed a light-colored rigid finishing cover to protect the insulation , hide the pipes and harmonize the whole with the white brick. Anti-vibration silent blocks complete the fixing to reduce sound transmission.

MultiZone Architecture: comfort by zones

The FreeMatch R32 platform allows you to connect 2 to 5 heads (wall, floor consoles, cassettes). For this project:

• Zone 1 – Living Room/Kitchen : Wide-spread wall head for minimal stratification and stable sweeping.

• Zone 2 – Bedrooms : wall-mounted head with finely modulated flow for a silent night .

• Zone 3 – Basement : floor console (optional depending on the final configuration) ensuring excellent sweeping at the bottom of the room .

Each zone uses its own remote control and an inverter algorithm that finely adjusts the compressor frequency. The result: uniform temperature , smooth starts , and optimized consumption .

R-32 Technology: Efficiency and Regulatory Future

The R-32 refrigerant in the recent Gree range offers:

• best seasonal efficiency (SEER/HSPF) at equivalent power;

• reduced charge compared to R-410A;

• lower global warming potential , in line with future regulatory guidelines.

For the climate of Greater Montreal, the chosen configuration maintains efficient heating down to the low temperatures frequently encountered, with controlled defrosting and attractive capacity maintenance during prolonged cold spells.

Installation details: AirGreen rigor throughout

Drilling and sealing

• Targeted drilling from the outside to preserve the brick and avoid joints.

• Frost- resistant expanding foams and sheaths to secure the envelope.

• Sealing and flashing at entry points for continuity of the air barrier.

Pipe routing

• Balanced lengths between heads to stabilize refrigerant distribution.

• Bending radii respected to avoid any stress on the copper tubes.

• Gravity slope ensured for condensate; where gravity was not possible, a silent mini condensate pump with integrated alarm was provided.

Electrical and protections

• Dedicated circuit pulled to main panel with CSA compliant breaker .

• Accessible outdoor disconnect switch , near the condenser, according to code.

• Grounding and UV jackets for durability.

Finishes

• UV-stable cover , stainless steel screws, anti-UV collars , and butyl tape at the junctions.

• Leak tests under nitrogen, deep vacuum , and commissioning with pressure/temperature readings.

Sizing and expected performance

The BTU selection is based on the surface area and the thermal balance of the zones. For this type of Laval house, the usual configuration is between 24,000 and 36,000 total BTUs distributed between 3 heads, with:

• High SEER for summer air conditioning ;

• Competitive HSPF for mid-season and mid-winter heating ;

• fine modulation to avoid overheating and short cycles.

In practice, the first surveys indicate:

• rapid temperature rise in the basement;

• stability of the living room despite the late afternoon solar input;

• very low noise levels , both indoors and in the backyard.

Results for the client

• Zoned comfort : each occupant sets their room to the desired temperature .

• Savings : Inverter modulation reduces electrical demand compared to baseboards.

• Aesthetics : a single condenser for the entire house and a discreet cover .

• Scalability : possibility of adding a head in a future layout.

Recommended HVAC maintenance

To maintain performance and air quality :

• Clean indoor unit filters every 4 to 8 weeks depending on usage.

• Clear the outdoor battery of leaves and dust in spring and fall.

• Schedule annual HVAC maintenance : electrical inspection, tightening, condensate testing, pressure/temperature readings, defrost and inverter control check.

• In winter, maintain clearance around the condenser to prevent snow accumulation.

Grants and Eligibility

Recent R-32 and ENERGY STAR® heat pumps may be eligible for various programs in Quebec. We assist each application to maximize assistance when the chosen configuration and performance criteria allow. Residents of Montreal, Laval, Longueuil, the North Shore, and the South Shore can entrust us with verifying the criteria and preparing the required documents.

Pitfalls to Avoid in a MultiZone Project

• Undersizing a head for an open area: risk of over-stressing and increased noise.

• Non-compliant line lengths : capacity losses and imbalance between zones.

• Positioning the condenser too low : exposure to snow and runoff.

• Omitting condensate management for remote heads: risks of alarm and shutdown in summer.

Why AirGreen for your MultiZone Gree

We work daily in Greater Montreal and are familiar with local architectural features : masonry, narrow walkways, balconies, and backyard access. Our approach combines:

• Thermal study by zones;

• Route plan for pipes and cables;

• Clean and secure HVAC installation ;

• Instrumented commissioning ;

• Support for maintenance and longevity.

This Gree FreeMatch R32 installation in Chomedey demonstrates the balance we seek in every project: measurable comfort , visual discretion and lasting performance , with the flexibility needed to evolve the house.

AirGreen – Air Conditioning & Heating
Your HVAC partner for Montreal, Laval, Longueuil, the North Shore and the South Shore . Technical advice, certified installation and annual maintenance for heat pumps , MultiZone heat pumps and wall-mounted air conditioners .