Installation of a Gree Multi+ Ultra DoubleZone Heat Pump in Brossard
Experience superior comfort and efficiency with AirGreen's installation of the Gree Multi+ Ultra DoubleZone Heat Pump in Brossard. Discover the benefits of this state-of-the-art HVAC system!
In summer, the outdoor unit rejects the house's heat outside.
Generic illustration of this type of installation, not a survey of this job site. Tap a number.
Mounted level on a wall plate, high enough for the air to reach the whole room, with enough space around it to slide the filters out easily.
The refrigerant lines, the communication cable and the drain go through the wall in a single opening, sealed against water, cold air and insects.
Two insulated copper pipes connect the two units. Outside, a line cover can protect them from sun, knocks and weather.
A shut-off switch near the outdoor unit isolates it safely for service. It must stay accessible at all times.
The compressor and the fan. In heating mode it captures heat from the outdoor air, even in winter, and moves it inside.
On the ground or on the wall, it keeps the unit above accumulated snow. The unit stays clear and defrost water can drain away.
The fan needs to blow freely. Storage, a fence or a wall too close, and efficiency drops while noise goes up.
Enhancing Comfort and Efficiency in Brossard
At AirGreen, we pride ourselves on delivering top-notch HVAC services across the Montréal area, including Laval, Longueuil, the North Shore, and the South Shore. Recently, we completed a remarkable installation in Brossard that exemplifies our commitment to quality and customer satisfaction. This project involved the installation of a Gree Multi+ Ultra DoubleZone Heat Pump, a state-of-the-art system designed to provide optimal comfort and efficiency. Let us take you through this fascinating installation process and the benefits it brings to our clients.
Project Overview
Location: Brossard, South Shore
Type of Machine: DoubleZone Heat Pump
Brand: Gree
Model: Multi+ Ultra
Size: 24,000 BTU Compressor with two 12,000 BTU Indoor Units
Grant Eligibility: $2,148 LogisVert Grant from Hydro-Québec
The Challenge: Aesthetics and Performance
When we arrived at the Brossard residence, we immediately noticed the homeowners' concern for maintaining the aesthetic appeal of their property. They wanted a heating and cooling solution that would not only perform efficiently but also blend seamlessly with the exterior of their home. This was particularly important given the aluminum capping on the outside of their house, which needed to match perfectly with the new installation.
The Solution: Gree Multi+ Ultra
The Gree Multi+ Ultra was the perfect choice for this project. Known for its superior performance and sleek design, this heat pump offers both powerful heating and cooling capabilities while maintaining a low-profile appearance. Here are some key features that make the Gree Multi+ Ultra an excellent choice:
- Cooling Capacity: 24,000 BTU
- Heating Capacity: -35°C
- Exterior Dimensions (L x D x H): 39.48 x 16.41 x 31.11 inches
- Energy Star® Certified: Yes
- WiFi Connectivity: Included
- AHRI Certified: 203989086
- Efficiency: 23.0 SEER
- Warranty: 12 years on the compressor and parts
- Sound Pressure Level (Exterior): 60.0 dB(A)
- Eco-friendly Refrigerant: R-410A
- Additional Features: Low voltage start, anti-corrosion coating on fins, self-diagnosis function, automatic defrost function, reinforced steel box
The Installation Process
Initial Assessment
Our team began with a thorough assessment of the property to determine the best placement for the outdoor unit. The goal was to find a location that would provide optimal airflow and efficiency while minimizing any visual impact.
Mounting the Outdoor Unit
We carefully mounted the outdoor unit on a sturdy platform, ensuring it was securely fastened and level. The Gree Multi+ Ultra's compact design allowed us to position it in a discreet location that complemented the home's exterior.
Installing the Indoor Units
Next, we installed the two 12,000 BTU indoor units. These units were strategically placed to maximize airflow and comfort within the home. Each unit was connected to the outdoor compressor via insulated refrigerant lines, which were neatly concealed to maintain the home's aesthetic appeal.
Connecting the System
With the units in place, we proceeded to connect the system, ensuring all electrical and refrigerant connections were secure and up to code. The Gree Multi+ Ultra features a low voltage start, which is particularly beneficial in preventing power surges and ensuring smooth operation.
Ensuring Aesthetic Harmony
One of the most critical aspects of this installation was matching the aluminum capping on the exterior of the home. Our team took great care to select materials that would blend seamlessly with the existing capping. The result was an installation that not only performs exceptionally well but also enhances the overall look of the property.
Performance and Benefits
The Gree Multi+ Ultra DoubleZone Heat Pump offers numerous benefits to homeowners:
- Year-Round Comfort: With a heating capacity down to -35°C and a powerful cooling system, this heat pump ensures a comfortable indoor environment regardless of the season.
- Energy Efficiency: With a SEER rating of 23.0, the Gree Multi+ Ultra is highly efficient, helping homeowners save on energy bills.
- Quiet Operation: The system operates at a low sound pressure level of 60.0 dB(A), ensuring a peaceful living environment.
- Smart Features: WiFi connectivity allows for remote control and monitoring, providing convenience and flexibility.
- Environmental Responsibility: The use of eco-friendly R-410A refrigerant and energy-efficient operation make this system a green choice.
Customer Satisfaction
Our clients in Brossard were thrilled with the outcome of the installation. They appreciated the careful attention to detail and the effort we put into ensuring the system blended perfectly with their home. The improved comfort and efficiency of their new heat pump have made a noticeable difference in their daily lives, and they were particularly pleased with the eligibility for the LogisVert Grant from Hydro-Québec, which provided a substantial financial incentive.
Conclusion
At AirGreen, we are dedicated to delivering high-quality HVAC solutions that meet the unique needs of our clients. This installation in Brossard is a testament to our commitment to excellence and customer satisfaction. The Gree Multi+ Ultra DoubleZone Heat Pump not only provides superior performance but also enhances the aesthetic appeal of the property. We look forward to continuing to serve the Montréal area with top-notch HVAC services.
For more information on our services and to see more of our installations, visit our website or contact us today.
How it goes, from the first call to the end
The main steps of this kind of job at AirGreen. Every house has its quirks: the estimate brings them out.
We look at the room, the outside wall, the line route and where the outdoor unit will go. That is where the capacity gets chosen.
Model, capacity and price, in writing. We also check whether the model qualifies for assistance programs.
Floors and furniture protected, wall plate position marked level, wall opening located.
A single opening, with the slope the drain needs to flow outside.
Set on a stand raised above the snow, with the clearances the manufacturer requires.
Connected, insulated and protected. The opening is then sealed against water, cold air and insects.
A dedicated circuit and an accessible disconnect near the outdoor unit.
Leak test, vacuum, then start-up and a check of heating and cooling.
Remote, modes, filters: we show you the essentials before we leave.
- The on-site estimateWe look at the room, the outside wall, the line route and where the outdoor unit will go. That is where the capacity gets chosen.
- The quoteModel, capacity and price, in writing. We also check whether the model qualifies for assistance programs.
- Getting readyFloors and furniture protected, wall plate position marked level, wall opening located.
- The wall openingA single opening, with the slope the drain needs to flow outside.
- The outdoor unitSet on a stand raised above the snow, with the clearances the manufacturer requires.
- Lines, cable and drainConnected, insulated and protected. The opening is then sealed against water, cold air and insects.
- The electrical workA dedicated circuit and an accessible disconnect near the outdoor unit.
- Tests and start-upLeak test, vacuum, then start-up and a check of heating and cooling.
- The walkthroughRemote, modes, filters: we show you the essentials before we leave.
And at your place?
Two quick checks with real numbers: what heat costs, and what your current heaters add up to in BTU/h.
Conversion: 1 W = 3.412 BTU/h. An indication, not a load calculation: baseboards and furnaces are often stronger than the real need, and they can stay as backup. AirGreen confirms the capacity on site.
What to do, season by season
Three habits per season for this unit. They take a few minutes and prevent many calls.
- Clean the indoor unit's filters.
- Clear leaves and debris left on the outdoor unit by winter.
- Test cooling before the first hot days.
- Clean the filters more often when the unit runs a lot.
- Keep plants away from the outdoor unit.
- Check that no water drips from the indoor unit.
- Rake the leaves around the outdoor unit.
- Test heating before the first cold days.
- Book periodic maintenance before winter.
- Keep snow away from the stand and the front of the unit.
- Let the unit defrost: it is normal.
- Never hit the ice on the fins; call us if the unit stays iced up.
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What people ask us about this kind of work
Does a wall-mounted heat pump heat in winter?
Wall-mounted or multi-zone: how do I choose?
Where does the outdoor unit go?
Are there grants?
Do I need a permit?
How cold can it heat?
How much can I save?
How is the LogisVert assistance calculated?
Is it noisy?
The outdoor unit is covered in ice: is that normal?
Does AirGreen hold the required licences?
Is the estimate free?
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Text and photo: a real AirGreen Climatisation & Chauffage job. The diagrams are generic illustrations of the type of installation, not a survey of this job site. Sources of the added figures: airgreen.ca product pages (NEEP / AHRI performance), Hydro-Québec (Heat pumps page, LogisVert, read on 13 October 2026), Régie de l’énergie (rate D as of 1 April 2026).