Project

Installation of a Gree Vireo GEN3 Wall-Mounted Heat Pump in Lorraine

Discover how AirGreen transformed a home in Lorraine with a Gree Vireo GEN3 mini split heat pump. Year-round comfort, energy efficiency, and smart features make this the perfect choice!

By AirGreen Climatisation & Chauffage Admin5 min read
Installation of a Gree Vireo GEN3 Wall-Mounted Heat Pump in Lorraine
Installation of a Gree Vireo GEN3 Wall-Mounted Heat Pump in Lorraine
–chapters in this story
5 minreading time
–type of installation
2025year published
The tour

Take a tour of the installation

Each number is a point we check on site. Switch between summer and winter to watch air and heat move.

Generic diagram: wall-mounted heat pump, indoor and outdoor units

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.

  1. 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.

  2. The refrigerant lines, the communication cable and the drain go through the wall in a single opening, sealed against water, cold air and insects.

  3. Two insulated copper pipes connect the two units. Outside, a line cover can protect them from sun, knocks and weather.

  4. A shut-off switch near the outdoor unit isolates it safely for service. It must stay accessible at all times.

  5. The compressor and the fan. In heating mode it captures heat from the outdoor air, even in winter, and moves it inside.

  6. On the ground or on the wall, it keeps the unit above accumulated snow. The unit stays clear and defrost water can drain away.

  7. The fan needs to blow freely. Storage, a fence or a wall too close, and efficiency drops while noise goes up.

The job

Expert Heat Pump Installation in Lorraine – AirGreen at Your Service

In the charming town of Lorraine, AirGreen recently had the pleasure of installing a state-of-the-art Gree Vireo GEN3 wall-mounted heat pump, a model renowned for its energy efficiency and robust performance. This particular installation showcases why we are trusted HVAC professionals across Montreal, Laval, Longueuil, and the Rive Nord.

With its powerful 18,000 BTU cooling capacity and -30°C heating capability, this Gree Vireo GEN3 is an exceptional solution for Quebec's diverse climate. Designed for year-round comfort, this mini split ensures warm winters and cool summers—all while lowering energy costs. Let us walk you through the story behind this project, the features of this remarkable system, and the benefits it brings to our satisfied client.


A Personalized Approach to Comfort in Lorraine

Every installation project at AirGreen starts with understanding our client’s unique needs. In Lorraine, the homeowner sought a heating and cooling solution for their main living area. With extreme temperatures being a hallmark of Quebec's weather, they needed a system that could withstand frigid winters and scorching summers.

After a detailed consultation, we recommended the Gree Vireo GEN3 wall-mounted heat pump, which is not only Energy Star® certified but also equipped with features like WiFi integration, smart defrosting, and ultra-quiet operation. With the added benefit of a $385 LogisVert grant by Hydro-Québec, this model was the perfect fit for their budget and comfort requirements.


The Installation Process: Precision and Excellence

Our skilled technicians installed the indoor unit (dimensions: 38.63" x 8.75" x 12.25") in the client’s spacious living room, ensuring optimal airflow for maximum comfort. The outdoor unit (dimensions: 38" x 15.63" x 27.63") was strategically placed to minimize noise and blend seamlessly with the home’s exterior.

We utilized premium 1/4 - 5/8 piping to connect the units, ensuring efficiency and durability. The system was carefully tested to guarantee optimal performance, and the entire process was completed within a day, leaving the homeowner delighted with the results.


Why the Gree Vireo GEN3 Stands Out

High-Performance Heating and Cooling

  • Cooling Capacity: 18,000 BTU, perfect for cooling large spaces efficiently.
  • Heating Capability: Reliable even at extreme temperatures as low as -30°C, making it ideal for Quebec’s cold winters.

Energy Efficiency and Savings

  • Rated at an impressive 23.0 SEER, this model significantly reduces energy consumption.
  • Equipped with Energy Star® certification, ensuring both environmental and financial benefits.

Smart Technology for Modern Living

  • WiFi Enabled: Allows remote control through your smartphone, ensuring convenience at your fingertips.
  • I-Feel Technology: The remote senses temperature, ensuring your comfort is prioritized.

Quiet Operation

  • Indoor Unit Noise Levels: As low as 31 dB(A), ensuring a peaceful indoor environment.
  • Outdoor Unit Noise Levels: Maintains a low 57 dB(A), ideal for maintaining neighborhood harmony.

Key Features That Enhance Comfort

  • 7 Fan Speeds: Adjust airflow to your exact preference.
  • Turbo Mode: Quickly reach your desired temperature in extreme weather conditions.
  • Smart Defrosting: Prevents ice build-up during cold seasons for uninterrupted operation.
  • Intelligent Preheating: Ensures warm air delivery without uncomfortable blasts of cold air.
  • Eco-Friendly Refrigerant (R-410A): Minimizes environmental impact.

Why Choose AirGreen for Your HVAC Needs?

Expertise You Can Trust

At AirGreen, we pride ourselves on delivering top-tier HVAC services across Montreal, Laval, Longueuil, Rive Nord, and Rive Sud. With years of experience, we guarantee installations that are precise, efficient, and tailored to your needs.

Commitment to Customer Satisfaction

From initial consultation to post-installation support, we prioritize your comfort and satisfaction. Our team is always available to address questions or concerns, ensuring your peace of mind.

Access to Grants and Subsidies

As part of our commitment to affordability, we guide clients through Hydro-Québec’s LogisVert Grant program, helping them secure up to $385 in rebates for eligible models like the Gree Vireo GEN3.

Comprehensive Warranty Options

The Gree Vireo GEN3 comes with a 12-year compressor warranty and an optional 10-10-10 extended warranty for compressor, parts, and labor. At AirGreen, we stand by the quality of our products and services.


An Investment in Year-Round Comfort

Installing the Gree Vireo GEN3 mini split heat pump in Lorraine is more than just an upgrade—it’s an investment in comfort, energy efficiency, and peace of mind. With its sleek design, cutting-edge technology, and reliable performance, this system is designed to keep homes cozy in winter and cool in summer.

Whether you’re looking to install a similar system or explore other options, AirGreen is here to help. Our team of HVAC experts is ready to transform your home into a haven of comfort, tailored to your specific needs and budget.


Contact AirGreen Today for Your HVAC Solutions

Looking for a reliable and professional HVAC company in Montreal, Laval, Longueuil, Rive Nord, or Rive Sud? Trust AirGreen to deliver exceptional service, top-quality products, and unmatched expertise. Contact us today to schedule your consultation and discover the difference we can make in your home.

The steps

The big day, step by step

The main steps of this kind of job at AirGreen. Every house has its quirks: the estimate brings them out.

Step 1 of 9The on-site estimate

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.

  1. 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.
  2. The quoteModel, capacity and price, in writing. We also check whether the model qualifies for assistance programs.
  3. Getting readyFloors and furniture protected, wall plate position marked level, wall opening located.
  4. The wall openingA single opening, with the slope the drain needs to flow outside.
  5. The outdoor unitSet on a stand raised above the snow, with the clearances the manufacturer requires.
  6. Lines, cable and drainConnected, insulated and protected. The opening is then sealed against water, cold air and insects.
  7. The electrical workA dedicated circuit and an accessible disconnect near the outdoor unit.
  8. Tests and start-upLeak test, vacuum, then start-up and a check of heating and cooling.
  9. The walkthroughRemote, modes, filters: we show you the essentials before we leave.
Your numbers

What would it look like at your place?

Two quick checks with real numbers: what heat costs, and what your current heaters add up to in BTU/h.

Size checkYour baseboards, in BTU/h
–BTU/h of installed electric heat

    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.

    Mistakes avoided

    Four mistakes we do not make

    Flip each card to see what we do instead.

    Going further

    Your own project, step by step

    Through the seasons

    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.
    At your place

    Is your home ready?

    Check what applies at your place. A "no" is not a refusal: it is what we sort out during the estimate.

    0 / 6 checked
    True or false

    Four statements: true or false?

    It all comes down to details you have just seen.

    1. In heating mode, the outdoor unit can produce water.

    2. You pick the capacity with a simple square-footage rule.

    3. A multi-zone connects several indoor heads to a single condenser.

    4. The disconnect can sit behind the patio furniture.

    Frequently asked questions

    What people ask us about this kind of work

    12 questions
    Does a wall-mounted heat pump heat in winter?
    Yes, it heats and cools. Its capacity drops in very cold weather; the operating range depends on the model and is listed on its spec sheet.
    Wall-mounted or multi-zone: how do I choose?
    One wall head and one condenser outside: the direct solution for a room or an open area. For two to five rooms, a multi-zone puts one head in each room on a single condenser.
    Where does the outdoor unit go?
    Where it stays above the snow, clear and accessible, away from walkways. We decide it with you during the estimate.
    Are there grants?
    Depending on the model and your situation, assistance programs may apply, including Hydro-Québec's LogisVert. AirGreen checks the model number before quoting an amount. See the grants.
    Do I need a permit?
    Rules vary from city to city: location, distances, noise. See permits and by-laws, and we check for your address.
    How cold can it heat?
    It depends on the model. According to Hydro-Québec, newer models work down to a temperature between −15 °C and −25 °C, and some cold-climate models are certified lower. The minimum temperature is on each unit's spec sheet.
    How much can I save?
    Hydro-Québec says a heat pump can be up to three times more efficient than baseboards for heating in the colder months. The result depends on the house, the climate and how it is used.
    How is the LogisVert assistance calculated?
    For ENERGY STAR cold-climate certified heat pumps, Hydro-Québec lists assistance of $120 per 1,000 BTU/h of heating capacity at −8 °C. AirGreen checks the exact model before quoting an amount; only Hydro-Québec confirms the assistance granted. See the grants.
    Is it noisy?
    The sound level depends on the model and is listed in decibels on each unit's spec sheet. Location matters too: when possible, we avoid putting the outdoor unit under a bedroom window.
    The outdoor unit is covered in ice: is that normal?
    Some frost is: the unit runs defrost cycles. Never hit the ice. If the unit stays iced up or stops heating, call us.
    Does AirGreen hold the required licences?
    Yes. AirGreen holds RBQ licence 5645-9605-01, subclasses 15.8 Ventilation, 15.10 Refrigeration and 16 Electricity.
    Is the estimate free?
    Yes. The on-site estimate is free and the quote follows within 24 hours. Book my free estimate.

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    Every house has its constraints. We see them before we install.

    The on-site estimate is free and the quote follows within 24 hours.

    • RBQ licence5645-9605-01 · 15.8, 15.10, 16
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    • QuoteWithin 24 hours

    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).

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