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About Us

DeMark Home Ontario Inc is a supplier of Home Services to customer across Ontario. We are proudly 100% Canadian owned and operated company. Our main goal is to provide fast, reliable and professional home services to our customers.

High efficiency furnace sale, rental and maintenance service.

Buy, rent or finance your new high efficiency air conditioner.

Free upgrade of your old hot water heater to a new model.

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DeMark Home Ontario Inc services include sales and installations of hot water heaters, Tankless Water Heater, Furnaces, Air Conditioners and equipment maintenance by highly experienced and licensed professionals. Through variety of our Energy Efficient products and services we strive to bring the highest value and comfort to our customers. We offer rental, financing, purchasing options on furnaces, air conditioners, hot water heaters and Tankless units.

Our team of experts carefully focuses on helping customers select the most efficient and reliable equipment and service for their home. We take an individual approach to every customer based on specific needs and desires.

Our team of professionals not only focuses on assisting customers in selecting the most efficient and reliable service for their homes but also providing customers with an educated response on Government Programs and Rebates, Energy Saving Tips and Tools.

We bring environmental awareness to our socially responsible homeowners by offering Energy Efficient products, services and programs that reduce carbon footprints and offset CO2 emissions.

We are here to provide homeowners across Ontario with value, efficiency, reliability and to help you save money and preserve our natural resources.

DeMark Home Ontario servicing area for HVAC-furnaces, air conditioners, hot water heaters, tankless units includes: Toronto, GTA, Vaughan, Mississauga, Brampton, Markham, Scarborough, Milton, Burlington, Niagara Falls, Oshawa, Pickering, Ajax, Aurora, Newmarket, Barrie, Ottawa and more. For a full servicing area please click here.

WE’RE PROUD AUTHORIZED DEALERS OF

Customer Rating of 5.0
based on Google reviews

  • Get A Quote Today! Free in-home estimate!
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Upgrading to a high-efficiency heating and cooling system offers more than energy savings.

Take advantage of these rebates today!

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This item comes with absolutely free standard installation. We’ll ensure that the product is completely installed to code and fully functioning prior to leaving.

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Great news! Receive a brand new digital thermostat absolutely free when renting this HVAC product from DeMark Home Ontario.

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Great news! When renting a furnace or air conditioner, you’ll get your first 2 months absolutely rent free.

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Great news! When renting a furnace and air conditioner together, you’ll get your first 3 months absolutely rent free.

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This product carries a manufacturer warranty and we’re happy to explain it in full to you. Feel free to get in touch with us for more information or see the Warranty Information tab for more information

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If your order is placed and confirmed by 11am, we can have your HVAC product installed within the same day.

Certain conditions apply, not available on all products.

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This water heater is subject to reduced rental rates based on the DHO discount program. Save money on your bill every single month!

Some conditions apply

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Save money on this item when buying it along with a qualifying high-efficiency furnace or air conditioner.

Some conditions apply

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Great news! When renting a qualifying water heater, you’ll get your first 2 months absolutely rent free.

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Promotional code can be found on the eFlyer, Brochure or promotional email that you received from us.

*If you are an existing customer please refer to the mail or email that was sent to you after the installation of your equipment as it contains your promotional code. If you are having troubles locating it please call us and one of our Customer Service Representatives will be happy to assist you.

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  • Please fill out the form below in order to schedule service and be sure that your request will be processed promptly and you will hear back from us shortly.
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Notice for Power Vent Water Heater Customers

Effective August 2007, gas code requires technicians working on venting to replace black ABS vent pipe with white UL-certified vent pipe.

We will upgrade your venting pipes at no additional cost.

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