Tankless Water Heaters

Enjoy a reliable source of hot water by consulting with the professionals at SunnySide Heating & Air Conditioning. We install, service and repair water heaters Toronto GTA residents count on for high performance and long-lasting durability. If you are looking for a standard storage hot water tank or you want the latest in tankless, hot water on demand, we have the water heaters to fit your exact needs.

Gas or Electric?

Sunnyside has knowledgeable technicians specialized in electric and natural gas hot water heater installations who can help you decide which is the best unit for your home. Keep in mind, we can also help you with water heater repairs and maintenance, including prompt 24-7 emergency service.

Features of a natural gas heater
Features of an electric heater

Storage Tank or Tankless?

Space is the most important fact to consider before choosing to go with standard storage tank hot water heaters or tankless, on-demand water heaters. Compare the advantages and features of each type.

Storage Tank Hot Water Heater

Storage Tank

  • Good for high use demands
  • Save utility bills - Large gas burner or high electric flow is not needed
  • Constantly stores heated water
  • Less prone to mechanical problems
  • Comes in different sizes from 20 to 120 gallons
  • Easily adapted to solar pre-heat applications

Tankless, On-Demand Water Heater

Tankless Heater

  • Energy Savings - heat water only when you need it
  • Continuous supply of hot water throughout your home
  • Save space
  • Cleaner water
  • Lasts longer, units can last up to 20 years before replacement

What Size Water Heater Do I Need?

It’s important to choose the right size water heater for your home. If you decided to go for a storage tank water heater, the average amount of water you use per day is going to determine the capacity of tank you should buy. This chart will help you identify the right size unit for your house.

Chart showing which sized storage tank-type heater for the number of bedrooms

If a tankless water heater is your choice, you have 2 options to consider:

Tankless Heater

Whole House

Replaces a storage tank-type water heater. Should be installed in a central location of the house.


Tankless Heater


Only provides hot water to 1 single fixture due to its very small size and is usually located under the sink, far from the central hot water source.

Haven't decided yet? Let us help.

With years of experience installing hot water tanks in Toronto and throughout the GTA, SunnySide Heating & Air Conditioning can help you determine the size you need. Give us a call and we will assist you in getting the best equipment for your home.



If you are looking for a Toronto heating, air conditioning and indoor air quality service then please call 416.573.7212 or complete our online request form.

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