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About us ?


ATClimatisation offers you a wide range of electric furnaces, wallmount heat pumps, central units of great quality or mini VRF.
In order to clearly define your need, an ATClimatisation technical advisor will be happy to make a free evaluation at your home.

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Air conditioning

ATClimatisation offers you a wide range of wallmount air conditioners, high quality central systems or mini VRFs.
In order to clearly define your needs, an ATClimatisation technical advisor will be happy to make a free evaluation at your home.

Learn more


Since 1999, ATClimatisation has been a reference in the residential and commertial HVAC industry (Heating, Ventilation, Air Conditioning) in Montreal, Laval and Longueuil. We are specialized in the domaine of installation, maintenance and repair of all types of single zone and multi zone wallmounts. Also, we offer great quality central systems in addition to VRF, mini-VRF and light commercial installations for professional use.

At ATClimatisation

Serving you is our greatest pleasure

Our Services

We offer a full range of services to meet all air conditioning and heating needs. Whether for a free estimate at home, a need for troubleshooting or maintenance, or the management of guarantees, we strive to offer an irreproachable service in terms of quality and deadlines.


Do you need to get equiped with an air conditioner or a heat pump, or replace your existing installation? Our representatives will visit you to make a free estimate.

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Do you suffer from heat in the summer? Do you want to replace your old system to save on your electricity bill? Our consulting and installation experts will be there to help you.

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Do you have a problem with your air conditioning or heating system? Does it no longer work? At ATClimatisation we understand the importance of quick and effective repair.

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Maintaining your machine is important for its longevity. Whether you have a wallmount air conditioner, a central system or a heat pump, do not hesitate to contact us for a service request.

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Our Products


Whether for a new home or a renovation project, our experts in air and cold treatment will offer you an excellent solution to meet your needs and the size of your residence. Reliable and discreet, our wallmounts, central systems and mini VRF combine comfort and economy.

Our products

Are you an entrepreneur, owner of a business or industrial premises? Our team takes care of your business projects with professionalism. Whatever your industry, we have efficient and cost-effective heating and cooling solutions that fit your budget and your realities.

Our products


Our Brands

We have a wide range of brands from different manufacturers. We can offer you a multitude of air conditioning and heating systems adapted to all budgets.