Enhancing everyday living
A family business since 1945
For more than 75 years, GIANT has been the only privately held company in Canada specializing in water heater manufacturing.
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A water heater that meets your needs
Evaluate your daily consumption to find the residential water heater that meets your needs.
Warranty Validation
Would you like to know if your water heater is still under warranty?
Residential Water Heaters
GIANT manufactures a complete line of electric, gas-fired and oil-fired residential water heaters using the best raw materials available in Canada.
Commercial Water Heaters
GIANT manufactures a complete line of electric and gas-fired commercial water heaters using the best raw materials available in Canada.
Canada’s EnerGuide program for energy-using products is a rating and labelling system that allows consumers to find the most efficient product in their class. It provides verified data about a product’s energy performance.
The CSA certification indicates that our products have been evaluated by a formal process involving examination, testing and follow-up inspections. It also indicates that Giant products complies with applicable U.S., Canadian and/or international standards for safety or performance.
Giant’s Quality System is
ISO 9001-2015 certified.
ISO 9001-2015 certified.