Get the most out of your GREE wall-mounted heat pump to maximize your heating savings
At AirGreen, we’ve installed thousands of GREE wall-mounted heat pumps throughout Montreal, Laval, Longueuil, as well as on the North Shore and South Shore, and we know exactly how to optimize their performance for superior energy efficiency. Whether you're a homeowner, property manager, or in charge of a commercial building, knowing the best usage practices for your heat pump can make a huge difference on your heating bills, especially during Quebec’s long winter months.
So here are 7 concrete and unique tips, based on our field expertise, to heat your home efficiently and at a lower cost thanks to your GREE wall-mounted heat pump.
1. Smartly program the temperature based on your habits
One of the biggest advantages of GREE wall-mounted heat pumps, like the Lomo, Sapphire, or Extreme models, is their ability to be finely programmed based on your schedule. Rather than letting the system run full power continuously, use the timer or “energy-saving” mode to lower the temperature when you’re away or sleeping.
AirGreen tips:
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Keep a stable indoor temperature around 20°C (68°F) during the day.
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Lower it to 17°C or 18°C (62–64°F) at night or when away for extended periods.
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Use the GREE+ mobile app to adjust your heat pump remotely.
2. Optimize the placement of your indoor GREE unit
While installation is often influenced by structural constraints, at AirGreen we know just how much the placement of the wall head can impact performance. A poorly positioned unit can create cold spots, force the system to work harder, and increase energy use.
What we recommend:
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Aim the unit toward living spaces to better distribute warm air.
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Avoid placing the heat pump in front of a large window or in a closed hallway.
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Leave at least 1 meter (3 feet) of clearance in front of the unit for optimal airflow.
3. Perform regular maintenance to maintain peak efficiency
A clogged heat pump works harder, consumes more, and heats less efficiently. A professional HVAC maintenance check-up once a year is essential, but you can also help keep it running well with a few simple habits.
Monthly maintenance you can do yourself:
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Clean the air filters.
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Check for blockages around the outdoor unit (snow, leaves).
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Watch for unusual noises or error signals.
We also offer custom maintenance contracts for GREE systems, tailored to the climate realities of Montreal and surrounding areas.
4. Use the right modes based on outdoor weather
Your GREE heat pump offers several operating modes (heating, cooling, auto, dehumidification, fan). To optimize performance in winter, choose the manual heating mode, which is typically more stable and efficient than the auto mode.
AirGreen tip:
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When the temperature drops below -15°C (5°F), make sure the unit automatically goes into defrost mode. Models like the GREE Extreme are designed to withstand up to -30°C (-22°F), but it’s still important to monitor how it operates.
5. Close doors to unused rooms
Even if your wall-mounted heat pump is powerful, it’s designed to heat a specific volume of space. There’s no need to make it work harder by heating your entire floor if only your main room is being used.
What to do:
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Close off empty rooms during winter.
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Use draft stoppers under doors to limit heat loss.
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Focus the heating on main living areas.
6. Take advantage of available grants to upgrade or enhance your system
Did you know that several GREE wall-mounted heat pump models are eligible for the Hydro-Québec LogisVert grant, offering up to $2,172 depending on the model and capacity (e.g., 15,000 BTU GREE Extreme installed in Oka)?
Why it matters:
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It can cover a significant portion of your initial investment.
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These programs are designed to help you reduce your carbon footprint.
We take care of all the administrative steps to maximize your eligibility.
7. Get a custom evaluation with AirGreen
Every home, every family, and every heating need is different. At AirGreen, we offer free personalized evaluations, including:
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Heat loss analysis.
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Recommendation of the ideal GREE model (Lomo, Extreme, Sapphire, etc.).
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Energy optimization strategies tailored to your home.
We’ll also help you integrate your GREE heat pump into a hybrid system, working alongside a backup heating source or existing central system.
Why trust AirGreen with your GREE heat pump?
We’ve installed hundreds of GREE wall-mounted heat pumps across Montreal, Laval, Longueuil, the North Shore, and the South Shore, in all kinds of contexts: single-family homes, condos, multi-unit buildings, and businesses. Our certified technicians deliver flawless work, and our advisors support you before, during, and after the installation.
Examples of successful installations:
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In Sainte-Julie, a GREE Extreme 18,000 BTU helped a family cut their Hydro-Québec bill by 37%.
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In Beaconsfield, we installed a 24,000 BTU Sapphire unit in a home with cathedral ceilings, using elevated brackets to handle snow buildup.
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In Saint-Lambert, a retired couple received a full grant for their GREE wall-mounted heat pump thanks to our personalized assistance.
In summary: optimized efficiency within your reach
Your GREE wall-mounted heat pump is a powerful tool to heat your home at a lower cost—if you know how to use it properly. With these 7 tips and our on-the-ground expertise, you're now better equipped to get the most out of your HVAC system.
At AirGreen, we do everything to ensure each client enjoys optimal comfort, transparent service, and long-term support. Don’t hesitate to contact us for a free evaluation, a custom quote, or professional maintenance of your GREE system.