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Rinnai Tankless Water Heaters

Rinnai tankless water heaters provide homeowners with a reliable, energy efficient, and space efficient solution to their water heating needs.


The reason behind Rinnai’s great success on the water heater market is the incomparable longevity of their units. Rinnai tankless water heaters can last two times as long as a traditional water heater. Rinnai water heaters outlive traditional units even with minimal maintenance. This means that you can worry less and save more when using Rinnai equipment.

With Rinnai tankless water heaters, you now have the luxury of endless hot water. Rinnai’s tankless water heaters heat the water on demand as it goes through the pipes, meaning that no energy is wasted. Rinnai’s equipment features ultra-efficient heating coils, no pilot light, and no storage tank, which allows for you to save on energy.

The Benefits of Rinnai Tankless Water Heaters

Rinnai tankless water heatersVastly more efficient than its traditional counterpart. The equipment adjusts to your water heating demands, so that energy isn’t used when you don’t need it. The Rinnai models we install are EnergyStar certified. These Rinnai units are Super High-Efficiency and are some of the most efficient on the market.

  • Equipment that you can depend on. A Rinnai water heater will not give up on you after a short number of years. Investing in Rinnai’s equipment is an investment into the future. Their water heaters will provide you with a reliable water heating solution for many years to come.
  • The space in your home is not to be wasted. Rinnai’s tankless heaters will conserve space in your home as they can easily be hung up on the wall or concealed behind a cabinet.
  • Repairs are not a problem. Rinnai units are built in a way that allows for simple repairs. Every part of the unit can be replaced on its own, which makes for simple and cost-saving repairs.
  • Help the environment. With Rinnai tankless water heaters you will be reducing your carbon footprint. These units produce low emissions of CO2 and NOx.
  • There are different sizes of Rinnai tankless water heaters available so that all of our customers may have one which fits their needs.
  • Installations on standard gas lines are simple. Rinnai units can be easily installed on half inch or three-quarter inch gas lines.

Is a Rinnai Tankless Water Heater What’s Best for You?

Investing in a Rinnai tankless water heater is an investment into the future. These units will start saving you money the second you install one and will continue to do so over its lifetime. Your savings will be clear on your monthly utility bills. But, these units are more expensive to purchase or rent. If you expect to use the unit for many years to come and don’t want to waste energy and money on unnecessary water heating then a Rinnai tankless water heater is right for you.


At DeMark Home Ontario, we install top-of-the-line Rinnai 2019 Super High-Efficiency Tankless Water Heaters. With this high-quality equipment you can also expect high-quality installation from our fully licensed and trained HVAC technicians. Enjoy your Rinnai tankless water heater worry-free through our rent to own program.

Rinnai tankless water heaters rental

If you have any further questions regarding Rinnai tankless water heaters or have any other HVAC related questions, then don’t hesitate to contact DeMark Home Ontario today. DeMark Home Ontario is an authorized dealer of Rinnai heating equipment. Rinnai equipment is among the world’s most reliable heating equipment. We offer a free installation done by our highly trained and experienced technicians, 2 months free, and the best rental rates in Ontario. Give us a call at  1 (855) 998-2998 or fill out our online request form and we will be happy to assist you.

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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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