Installation of a Gree Crossover Ductless Heat Pump in Sainte-Thérèse
After a simple installation, Sainte-Thérèse homeowner enjoys serene, effective cooling with Gree Crossover. Another satisfied customer of AirGreen!
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.
A Fresh Breath of Air: How a Simple Upgrade Made a Huge Difference
Understanding the Client's Unique Needs
In the picturesque town of Sainte-Thérèse on the North Shore, a homeowner encountered a common yet frustrating issue. Despite having a central air conditioning system installed, the top floor of his residence stubbornly remained a zone of discomfort, particularly during the sweltering summer months. The quest for a cooling solution that was both cost-effective and exceptionally efficient led him to AirGreen, your trusted local HVAC experts.
Choosing the Right Solution: The Gree Crossover
After assessing the situation, our team recommended the Gree Crossover ductless heat pump. Known for its high efficiency and silent operation, this model stood out as the perfect candidate for the job. With a 25.3 SEER rating and a 9,000 BTU cooling capacity, the Crossover ensures a comfortable environment without intruding on your peace or your wallet. This unit is not only Energy Star® certified but also Wi-Fi enabled, offering convenient control via the GREE+ app, right from any smartphone.
Streamlined Installation with Attention to Detail
Our installation process in Sainte-Thérèse was straightforward but meticulous, reflecting our commitment to quality and customer satisfaction. We strategically positioned the indoor unit to maximize airflow while discreetly routing all necessary piping and electrical components. This careful placement meant no post-installation finishing was needed, a detail greatly appreciated by the homeowner.
The Silent Guardian: Unobtrusive Yet Effective
One of the standout features of the Gree Crossover is its whisper-quiet operation. With an interior sound pressure level of just 25 dB(A) on low setting, it's about as loud as a whispered conversation. Even at its maximum setting, the unit does not exceed 40 dB(A), ensuring that it supports a serene home atmosphere.
Sustainable and Smart Technology
In an era where environmental impact is a major consideration, the Gree Crossover excels. It utilizes R-410A, an eco-responsible refrigerant, and features a multi-speed fan, adjustable LED display, and washable dust filters. Its anti-corrosion fin coating extends the unit’s lifespan, while the smart preheating and turbo-mode provide rapid comfort adjustments.
The Results: A Happy Customer and Continued Trust
The installation was a resounding success. The homeowner was not only impressed by the performance of the Gree Crossover but also by the professionalism of AirGreen. His satisfaction was echoed in his actions, promptly referring his brother who installed a similar unit. This word-of-mouth endorsement is a testament to the quality of our work and the trust our customers place in us.
Why Choose AirGreen for Your HVAC Needs?
When it comes to selecting an HVAC service provider in Montréal, Laval, Longueuil, and the surrounding areas, AirGreen stands out for our commitment to quality, efficiency, and customer satisfaction. Our expertise in installing various types of HVAC systems, including the high-performing Gree Crossover ductless heat pumps, ensures that every installation is tailored to meet the unique needs of each customer.
With AirGreen, you're not just getting a contractor; you're partnering with a team that values your comfort and strives to deliver solutions that are both innovative and effective. Whether you need a slight upgrade like our Sainte-Thérèse client or a complete system overhaul, we are here to provide top-tier service and support.
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).