Giant Water Heaters
Review and Buying Tips

The Giant Company is a Canadian manufacturer of gas, electric, and oil-powered water heaters, designed as tank-type and tankless and used for potable water and space heating in residential and commercial applications.

Check out the reviews of the popular models, benefits, and main features.

Giant water heater

Giant water heaters for home use are available in several groups and sizes, from the small point-of-use tank-type and tankless – design to the large, whole-house units.

Smaller models are recommended for places that lack space, apartments, cottages, offices... while the larger ones are for families of two/three members and up, and can be installed in garages, basements, attics, crawl space, and utility rooms.

Electric-powered models

Electric water heaters from Giant come in sizes from as low as 2 gallons to the popular 60-gal units. The most advanced and highest performing units belong to the Cascade and Super Cascade series EcoPeak technology.

These heaters are known as the conventional models – cylindrical-shaped units that utilize a metal tank to store hot water.

Gas-powered models

Giant gas water heaters are designed as floor-standing tank-type and wall-mounted tankless models heating water on demand and providing continuous hot water supply as long as needed.

As some of the top North American manufacturers of water heating appliances, Giant also offers a hybrid model, a high-performing unit that combines a tank-type and tankless technology into one system, resulting in better recovery and efficiency.

Gas vs. electric comparison

As opposed to the electric models and its simple design, gas water heaters are more advanced and complex and based on the type; they use different venting solutions; atmospheric, direct, or power vents.

Some of the great advantages (some models) include high efficiency and great savings. Those models with the energy factor of 0.67 for the tank-type and over 0.9 for the tankless are Energy Star compliant and what you should aim for.


Some of the top features found on Giant water heaters include:

  • GreenFoam – environment-friendly foam insulation for better heat retention
  • Quality brass drain valves
  • EcoPeak technology – great for reliable operation during peak times
  • Condensing technology for ultra-efficiency
  • Extended warranty

Gas tankless models are even more complex due to their advanced tankless technology and electronics, and here is a detailed review for better understanding.

Most of the models mentioned above are designed for residential and light commercial applications, but there are also models specifically designed for commercial applications, including storage tanks.

How to contact Giant manufacturer

Address: 40 Avenue Lesage, Montreal-East, Quebec, Canada H1B 5H3

Phone: (514) 645-8893, 1-800-363-9354


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