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Water Heaters Sizing Guide

Many homeowners rent their natural gas water heaters as with renting you enjoy the peace of mind that comes with knowing that you are covered 24/7 if anything goes wrong with it. When it comes to selecting your rental water tank the size is considered to be one of the most important decisions to be made by homeowners. As a customer you need to choose the size that will accommodate the needs of your family and provide you with most reliable service. The right size will ensure sufficient hot water supply while maximizing the efficiency. By asking yourself some of the below questions will help you understand your family’s hot water usage patterns and help you make the right decision in you r selection:

  • Does your current water heater keep up to the hot water you require?
  • How old are the children in your home? Teenagers tend to use more hot water.
  • How many dishes and clothes are washed daily?
  • How many bathrooms in your home?
  • Do you use a dishwasher?
  • Do you have a whirlpool bath?

Once you are aware of your family’s hot water usage habits we will help you determine the right Water Heaters Sizing for your home and you can also refer to the chart below.

House Type Family Size Peak Daily Water Use (U.S. Gallons) Tank Size (U.S. Gallons) Tank Size (Liters)
Vacation cottage or very small family home 2-3 190 20 75
Small family home 3 227 30 114
Home with 2 bathrooms, 3 bedrooms and washing
3-4 454 40 151
Home with 3 bedrooms, washing machine and
4-5 568 40 151
Home with 4 bedrooms, washing machine and
4-6 621 50 189
Larger home with 4 or more bedrooms, washing
machine and dishwasher (heavy use charageristics)
5-7 757 60 227
Larger home as above with whirlpool baths 6-8 946 75 291

Fact: Maximizing the money savings on your water heater requires that you choose a tank that is sized correctly for your needs. DeMark Home Ontario Inc can help you decide which water heater tank size is right for you.

  • No Up-Front Costs: There is no cost to enroll and just one monthly payment – with Summitt Home Services you save money each and every day!
  • No Maintenance Costs: All repairs, parts and labour are covered with 24 hour a day, 7-days a week service. Free maintenance and repairs.
  • No Worries: Summitt Home Services performs scheduled maintenance on all of our tanks to ensure it continues to perform for you over the long term.
  • No Hassles: Installation is quick and easy with limited interruption to your day or your home.

Why rent your water heater from DeMark Home Ontario?

  • 2 Months free rent
  • Reduced rental rates – from $12.49
  • Free installation and removal of your existing tank
  • No up-front equipment cost
  • No hidden charges
  • Free upgrade your venting pipes at no extra cost in order to bring you up to current TSSA code
  • Free maintenance program 24/7/365
  • Free lifetime service and repairs on all parts
  • New Energy Saving water heaters
  • Quicker heating time and increased water output
  • Transferrable to the next owner should you sell your home
  • You will not be receiving any extra bills. Rental water heater charges will appear in the ‘Other Companies’ section of your Enbridge Gas Distribution Bill.

Service Area

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


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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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