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Why Should I Upgrade a Working Heating System ? Toronto,GTA,Ontario.

You can reduce your energy costs by improving the efficiency of your current heating system by converting to a new mid or high efficiency natural gas system.

An old standard efficiency gas furnace (heating system) typically operates at 60% or even as low as 40% seasonal efficiency. This means only 60% of the heat generated is used to heat your home. The other 40% goes up the chimney – that’s 40 cents of every dollar wasted or in some cases 60 cents.

As your furnace efficiency increases, so does the money you save on your home heating bill. With our 80% mid efficiency gas furnace, your savings increase by 20% over a standard efficiency furnace. With a 95% high efficiency gas furnace, there is only 5% heat loss. That means you save up to 35% on your heating cost when you upgrade your standard efficiency gas furnace. You can save a lot more when you convert from oil or electric heating to clean efficient natural gas. (Efficiency ratings for furnaces or boilers compare the amount of heat available in the fuel with the amount of heat actually reaching the house. A rating of 75% for example, means that three-quarters of the available energy has been converted into usable heat. A seasonal efficiency rating tells us how well the system performs over a typical heating season.)

You can further reduce your energy costs by converting your electric hot water heater to economical, clean natural gas. Many of your neighbors have already converted to natural gas and are getting the same amount of hot water as you, but at a savings of over 50%.

Natural gas is the most energy-efficient, cleanest burning and cost effective of all the major residential energy fuels. Energy experts predict that natural gas will continue to be the most cost effective heating source throughout Canada in the future. Converting or upgrading to a mid or high efficiency gas furnace will save you money on your heating costs now and in years to come.

Save up to 40 % on your energy costs when upgrading from your old furnace and/or air conditioner to one of our Energy Star certified high efficiency equipment. Take advantage of our worry free programs and help save the environment by reducing your carbon footprint.

Benefits of DeMark Home Ontario Furnace and/or Air Conditioner installation:

  • High Efficiency Air Conditioner and/or Furnace
  • Free standard installation
  • Free removal of your existing gas furnace or old AC
  • Saving up to 40% on your energy bills
  • 10 Yrs warranty on part and labour available
  • Respected and reliable brand
  • No hidden fees
  • Priority service available 24/7/365
  • Energy Star qualified equipment
  • Heat and cool your home with High Efficiency Furnace and Air Conditioner and dramatically reduce your carbon footprint

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

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

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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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