Types of Natural Gas Water Heaters - Kitchener Utilities
Kitchener Utilities


Types of Natural Gas Water Heaters

There are several types of natural gas water heaters available for rent with Kitchener Utilities. There are several factors that need to be considered when selecting one for your home.

Each type of water heater is designed to fit varying home sizes and structures, and the location of the gas water heater in relation to exterior walls or chimney of your home will need to be considered. The following are four main types of natural gas water heaters, and some description of how they work.

Types of Water Heaters

  • Conventional (REG) – Used when there is an existing chimney and the heater can be vented to the outside through the chimney
  • Power Vented (PV) – Vents to the outside through a wall in the home when there is no existing chimney. It can be located up to 50 feet from an outside wall. A blower motor is located on top of the water heater to vent gases to the outside. This type of tank requires electricity to operate the blower motor
  • Direct Vented (DV) – If located within eight feet of an exterior wall, it can be vented horizontally through the outside wall. This unit does not require a blower motor and uses outside air for combustion
  • Combination Vented (COMBO) – Uses a domestic water heater to provide efficient space heating and to supply hot water for domestic purposes. Used with Air Handlers for home heating
  • Tankless - small and space-saving, this unit heats water on demand and is direct vented outside of a home

Read more about tankless water heaters

Choosing Size and Capacity

When you’re choosing a water heater, make sure the model you choose meets the needs of your home and your family. The size and capacity of water heater your family requires depends on the number of people in your home as well as what you will be using it for. (e.g., soaker or whirlpool tubs require more hot water than conventional tubs). The following chart will break down the types of water heaters available, and can help you determine what type of water heater is right for your home.

Type of HomeNatural Gas Water Heater 
Size needsModelSize
1-2 people 40151 litres (33.3 gal)
3-5 people 50190 litres (41.6 gal)

More than 5 people OR

extra large bathtub

(soaker or whirlpool)



 60 or 75227 litres (50 gal) OR
341 litres (62.5 gal)
Venting Needs Venting Type Details
Able to vent through existing chimney Conventional 

Quiet No blower motor No electricity required


Located within 1.8 metres (6ft)

of exterior wall

 Direct ventedQuiet
No blower motor
No electricity required
Available on Model 50 only
Located up to 9.1 metres (30 feet) of exterior wallPower vented Electric blower (some noise)
Electricity required (no hot water during a power outage)

Don’t know how to choose one? We can help. When you apply to rent a natural gas water heater with us, we can consider these factors and help you determine the right size for your needs. See Rental Water Heater Rates for unit descriptions and costs.