State has been a trusted name in water heaters since Founded 1946, based in United States. As part of A.O. Smith Corporation, State benefits from extensive R&D and manufacturing resources. The brand is particularly known for A.O. Smith's contractor-channel water heater brand with Select and ProLine series for professional installation. State is positioned in the mid-range price tier, making it a solid mid-range option for water heaters.

State Water Heaters
by A.O. Smith CorporationState manufactures gas and electric tank water heaters, tankless water heaters, and hybrid heat pump models for residential and commercial applications. The Select series offers reliable standard models while the ProLine series provides enhanced features for professional contractors.
State Water Heaters Product Lines
Why Choose State for Water Heaters?
State stands out in the water heaters market because of A.O. Smith's contractor-channel water heater brand with Select and ProLine series for professional installation. Their products carry 3 industry certifications, including Energy Star, UL Listed, AHRI Certified, giving homeowners confidence in quality and compliance. State backs their water heaters with a 6-year standard; up to 12-year on premium models, which shows commitment to long-term reliability. With 5 dedicated product lines — Select Tank Series, ProLine Series, ProLine XE High-Efficiency, Tankless, and more — there's a State option for virtually every need and budget.
Certifications & Standards
Warranty & Support
Where to Buy State 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 →State Water Heaters FAQ
Is State a good brand for water heaters?
State Water Heaters is an American water heater brand owned by A.O. Smith Corporation, headquartered in Ashland City, Tennessee. Founded in 1946, State is A.O. Smith's contractor-channel brand, sold exclusively through plumbing wholesale distributors to professional contractors. The Select and ProLine series are their core residential product lines.
What warranty does State offer on water heaters?
State offers 6-year standard; up to 12-year on premium models.
Where is State made?
State is based in United States, headquartered in Ashland City, Tennessee.
What price range does State water heaters fall into?
State is positioned in the mid-range price tier for water heaters. They balance quality and affordability well.
What water heaters product lines does State offer?
State offers 5 water heaters product lines: Select Tank Series, ProLine Series, ProLine XE High-Efficiency, Tankless, Commercial.
What certifications does State have for water heaters?
State holds 3 certifications including Energy Star, UL Listed, AHRI Certified.
