Giant has been a trusted name in water heaters since Founded 1944, based in Canada. The brand is particularly known for Canada's leading domestic water heater manufacturer with products designed for cold-climate performance. Giant is positioned in the mid-range price tier, making it a solid mid-range option for water heaters.
Giant Water Heaters
Giant manufactures a full line of residential and commercial water heaters including electric tank, gas tank, tankless, heat pump, indirect-fired, oil-fired, and solar-compatible models. Their products are engineered for Canadian cold-climate conditions with high first-hour ratings, advanced insulation, and CSA-certified energy efficiency.
Mid-RangeBalanced quality and affordability
Giant Water Heaters Product Lines
Residential ElectricResidential GasHeat Pump (Hybrid)TanklessIndirect-FiredCommercial
Why Choose Giant for Water Heaters?
Giant stands out in the water heaters market because of Canada's leading domestic water heater manufacturer with products designed for cold-climate performance. Their products carry 3 industry certifications, including CSA Certified, Energy Star, EnerGuide, giving homeowners confidence in quality and compliance. Giant backs their water heaters with a 6-12 year limited warranty on residential tanks depending on model; lifetime on some premium models, which shows commitment to long-term reliability. With 6 dedicated product lines — Residential Electric, Residential Gas, Heat Pump (Hybrid), Tankless, and more — there's a Giant option for virtually every need and budget.
Certifications & Standards
CSA CertifiedEnergy StarEnerGuide
Warranty & Support
Warranty6-12 year limited warranty on residential tanks depending on model; lifetime on some premium models
Phone Support1-877-655-3517
Official Websitehttps://www.yourgianthq.com
Where to Buy Giant Water Heaters
Water Heaters How-To Guides
View All →How to Adjust Water Temperature
Set your gas or electric water heater thermostat to the right temperature for comfort, safety, and lower energy bills -- plus how to verify the actual output with a thermometer.
How to Choose the Right Size Water Heater
Calculate the right water heater size so you never run out of hot water -- covers first-hour rating for tanks, GPM for tankless, quick sizing charts, and the mistakes that leave people taking cold showers.
How to Flush Your Water Heater
Flush sediment from your tank water heater to cut energy bills, eliminate rumbling noises, and add years to its life -- the most important maintenance task most homeowners skip.
Common Water Heaters Problems
View All →Leaking Water Heater
Water around the base demands immediate attention -- floor damage, mold, electrical hazards. Could be loose fittings, a failing T&P valve, a bad drain valve, or a rusted-through tank that needs replacement.
No Hot Water
No hot water from any fixture? Cause depends on gas vs. electric. Common culprits: pilot light out, tripped breaker, failed element, faulty thermostat or gas valve.
Pilot Light Won't Stay Lit
Lights but will not stay lit? Almost always the thermocouple -- a safety sensor that detects the pilot flame. When it fails, the gas valve shuts off. Straightforward DIY repair, under $25.
Water Heaters Types
View All →Water Heaters Buying Guides
View All →Giant Water Heaters FAQ
Is Giant a good brand for water heaters?
Giant Factories Inc. is a Canadian manufacturer of residential and commercial water heaters based in Montreal, Quebec. Founded in 1944, Giant is one of Canada's largest domestic water heater manufacturers, producing electric, gas, oil-fired, hybrid, and solar water heaters. The company focuses heavily on the Canadian market with products designed for cold-climate performance and Canadian energy efficiency standards. Giant also manufactures heat pump water heaters and indirect-fired tanks.
What warranty does Giant offer on water heaters?
Giant offers 6-12 year limited warranty on residential tanks depending on model; lifetime on some premium models.
Where is Giant made?
Giant is based in Canada, headquartered in Montreal, Quebec, Canada.
What price range does Giant water heaters fall into?
Giant is positioned in the mid-range price tier for water heaters. They balance quality and affordability well.
What water heaters product lines does Giant offer?
Giant offers 6 water heaters product lines: Residential Electric, Residential Gas, Heat Pump (Hybrid), Tankless, Indirect-Fired, Commercial.
What certifications does Giant have for water heaters?
Giant holds 3 certifications including CSA Certified, Energy Star, EnerGuide.