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Upgrade Your Water Heater
Same Day Service
FREE Installation
Energy Savings
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Amana_AC Cool Your Home with a high-efficiency a/c Learn More Reduce your energy usage BY UP TO 40% Rent Today! and relax tomorrow... on your energy bills Save up to 40%
No credit check,
No Problem!
Installed in
24 hours
Lifetime service
& maintenance
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Red Tag Has your furnace been Red Tagged? We're licensed to inspect
and remove red tags!
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Who We Are

Ontario’s Leading HVAC Contractor

DeMark Home Ontario Inc is HRAI certified, customer focused company that provides high quality HVAC products and services to residential customers in Ontario. We are locally owned and operated company who strives to provide customers with the best furnace, air conditioning, hot water heater and tankless service in the industry. We offer the highest quality products for rent to own, finance or purchase at the most competitive prices.

We Have A Dream And It Is Green

We go above and beyond in everything we do so our customers can enjoy a more comfortable home. Our team of highly trained and licensed professionals help thousands of customers to select and install the most reliable and efficient equipment that is right for their homes year round. With a wide selection of quality brand products and service plans, homeowners receive information on how to select the best Energy Efficient appliances that qualify for Government Incentives and Rebates. We believe that every home deserves comfort, reliability and value while preserving natural resources.

DeMark Home Ontario servicing area for furnaces, air conditioners, tankless and hot water heaters includes: Toronto, Etobicoke, Richmond Hill, Brampton, Mississauga, Scarborough, Ajax, Pickering, Oshawa, Vaughan, Markham, Aurora, Newmarket, Port Perry, Ottawa, Barrie, Niagara Falls, St. Catharines,Welland and more. For our full servicing area please click here.

Ontario Leading Hvac Services Provider

Welcome to DeMark Home Ontario Inc your HVAC heating and cooling expert in Toronto, GTA and Ontario. We provide the best services in furnace, air conditioner, tankless and hot water heater installations, upgrades, repairs and maintenance by highly experienced and licensed professionals. You can now rent, finance or purchase High Efficiency furnace, air conditioner and water heater and enjoy the comfort of your home.

High efficiency furnace sale, rental and maintenance service.

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

Worry-free upgrade of your old hot water heater to a new model.

We Have A Dream And It Is Green

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 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, Markham, Scarborough, Milton, Burlington, Niagara Falls, Oshawa, Pickering, Ajax, Aurora, Newmarket, Barrie and more. For our full servicing area please click here.


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!


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.


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


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


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


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


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.


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


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

Some conditions apply


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


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.

  • 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.

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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