Two approaches to HVAC design, two philosophies of efficiency: which one should you choose for your home or business in Montreal, Laval or Longueuil?
When choosing a wall-mounted heat pump, it's not just about performance—it’s also about interior design. Two models clearly stand out in the Québec market: the GREE Sapphire and the LG Art Cool. Both of these heat pumps are renowned for their modern aesthetic and energy efficiency, appealing equally to owners of contemporary homes and businesses with a refined interior style. At AirGreen, we’ve installed both units in various homes and buildings across the North Shore and South Shore, and we’ve seen firsthand the benefits and differences between the two.
Two design-driven wall-mounted heat pumps, but far from identical
The GREE Sapphire and LG Art Cool both target customers who care about energy performance and seamless integration with their interior décor. However, their aesthetic approach, technical features, adaptability to cold climates, and ease of maintenance don’t belong to the same category.
GREE Sapphire: refined technology in the service of performance
The GREE Sapphire wall-mounted heat pump, available in 9,000, 12,000, and 18,000 BTU models, stands out with its slim design, ultra-quiet operation (as low as 19 dB), and its ability to heat down to -30°C. It’s ENERGY STAR® certified, with a SEER rating of up to 38, making it one of the most efficient heat pumps on the market.
Key advantages we've observed during installations:
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Extremely quiet operation, ideal for bedrooms or office spaces.
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Outstanding heating performance in areas like Laval or Sainte-Julie, even during harsh winter cold spells.
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Built-in Wi-Fi control for remote management from a smartphone.
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Discreet design with clean lines, perfect for minimalist interiors.
LG Art Cool: an artistic touch that blends with your décor
The LG Art Cool Mirror wall-mounted heat pump (and its variants) is mostly known for its sleek black mirror finish, which can even be customized on certain models. This option is highly sought-after by architects and interior designers in high-end residential projects in Montreal or modern condos in Longueuil.
What we’ve noticed in real-world scenarios:
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Highly appreciated by customers looking to combine style and comfort.
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Solid energy performance (up to SEER 21), though not as high as the GREE Sapphire.
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Good heating performance down to around -15°C, but often requires a supplemental system for the colder temps common on the North Shore.
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Not as quiet as the GREE Sapphire, which could matter in very calm spaces.
Real case studies: field comparisons between Montreal and South Shore
GREE Sapphire installation in Saint-Lambert
A client reached out for a renovated open-concept home with large north-facing windows. The challenge was to maintain consistent heat even in mid-January, without noise and without disrupting the home’s clean interior style.
Our solution: installation of a GREE Sapphire 18,000 BTU. Result: a warm home even at -27°C, quiet operation, and a harmonious look that fit perfectly with the white walls and light wood finishes.
LG Art Cool installation in Outremont
In an artfully designed condo, a client wanted an air conditioning solution that would blend perfectly with her matte black living room wall while offering year-round comfort.
Our recommendation: an LG Art Cool Mirror 12,000 BTU with a stylish wall-mounted controller. The client loved how the black mirror finish integrated into her décor and how intuitive the interface was to use.
Available grants: a deciding factor
The GREE Sapphire is often eligible for Hydro-Québec’s LogisVert grant, particularly because of its ability to heat efficiently down to -30°C. Many of our clients on the South Shore received between $1,704 and $2,172 in grants, depending on the BTU size installed.
The LG Art Cool, while stylish, is generally not eligible for the same level of grants, as its cold-weather heating capability is more limited. This factor plays a crucial role in many homeowners' final decision.
Maintenance and durability: what time has taught us
In terms of HVAC maintenance, both models are easy to keep clean with regular filter cleaning. However, the internal components of the GREE Sapphire are better built for Québec winters, which means fewer service calls during extreme cold periods.
At AirGreen, we perform full annual maintenance for both models across Montreal, Laval, Brossard and Repentigny, including a thorough system inspection, professional cleaning, and pressure/performance checks.
AirGreen’s verdict: it’s all about priorities
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If pure design, artistic integration, and summer cooling are your top priorities, the LG Art Cool is a great choice for your urban condo or office.
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If you're looking for an all-in-one wall-mounted heat pump that’s quiet, performs well in harsh winters, and qualifies for generous grants, the GREE Sapphire is the superior solution.
Why trust AirGreen?
Our team has been installing and servicing wall-mounted heat pumps for over 15 years across Montreal, Laval, Longueuil, the North Shore, and the South Shore. We guide you through every step: evaluation, grant application, installation, maintenance, and after-sales service. Every project is unique, and we make sure to offer custom HVAC solutions that are both durable and cost-effective.
In summary: what should you take away?
| Criteria | GREE Sapphire | LG Art Cool |
|---|---|---|
| SEER (summer efficiency) | Up to 38 | Up to 21 |
| Winter heating | Down to -30°C | Down to around -15°C |
| Noise level | Very quiet (19 dB) | Moderately quiet (25 dB+) |
| Design | Minimalist and discreet | Customizable black mirror |
| Grants | Up to $2,172 (LogisVert) | Generally not eligible |
| Wi-Fi control | Built-in | Varies by model |
Ready to upgrade your comfort in style?
Contact us today for a free assessment of your project in Montreal, Laval, Longueuil, the North Shore or the South Shore. Together, we’ll find the wall-mounted heat pump that perfectly suits both your performance needs and your design preferences.