Replacing a water heater is a decision you live with for a decade or more, so it pays to know what you are buying. If State Water Heaters is on your shortlist, the short answer is that they are a solid, professional-grade choice, with one catch worth understanding: State is a trade brand sold mostly through plumbers, not something you grab off a big-box shelf.
State is owned by A.O. Smith, one of the largest water heater manufacturers in the world, and the two brands share much of the same engineering. That relationship is the key to judging where State fits and whether it is right for your home.
This guide walks through the full State lineup, how the brand stacks up against the competition, realistic installed cost ranges, warranty coverage, and where you can actually buy one.
Who Makes State Water Heaters?
State Water Heaters is a subsidiary of A.O. Smith, which acquired State Industries in 2001. A.O. Smith is a publicly traded, century-old manufacturer and one of the biggest names in residential and commercial water heating. Since the acquisition, State has run on A.O. Smith’s manufacturing resources, components, and technology while keeping its own brand and distribution channel.
In practice, that means a State tank and its A.O. Smith equivalent often roll off related production lines with similar internal parts. The real difference is where you buy them. A.O. Smith sells widely through retail and wholesale, while State positions itself as a contractor and plumbing-channel brand aimed at professional installers.
Are State Water Heaters Any Good?
Yes. State earns a good reputation, and most of it is deserved. The brand is built for the trade, so its residential units borrow commercial-grade construction, and plumbers tend to like them because they are reliable and straightforward to service. Because State shares engineering with A.O. Smith, you are getting proven technology rather than an unknown budget import.
Where State is strong:
- Durable tank construction that holds up well against corrosion, the most common cause of tank failure.
- Serviceability that installers value, with accessible parts and clear diagnostics on many gas models.
- A deep catalog spanning gas, electric, tankless, and hybrid heat pump units for nearly any home.
Where to set expectations:
- You usually need a plumber to buy and install one, which adds cost and removes the DIY route.
- Base tank models are not the most efficient on the market; the highest efficiency lives in the tankless and heat pump lines.
- Pricing is less transparent than shelf brands because units move through wholesale distribution.
The State Water Heater Lineup
State organizes its residential catalog by fuel type and by tier. The ProLine family is the core residential line, with step-up ProLine Master and Premier tiers that add features, capacity, or longer warranties. Here is how the main categories break down.
Gas Tank Water Heaters
The ProLine gas series is State’s bread and butter. If you have a gas line, these recover hot water faster than an electric tank of the same size, which matters for busy mornings. State splits the gas line into atmospheric-vent models (standard chimney venting) and power-vent models that use a fan to push exhaust out through PVC, giving you more flexibility on placement.
What sets the gas tanks apart:
- Blue Diamond glass coating: a commercial-grade ceramic lining fused to the steel tank that resists corrosion better than standard linings.
- Self-cleaning dip tube: a PEX dip tube with side ports creates turbulence at the bottom of the tank to reduce sediment buildup, a leading killer of water heaters.
- FVIR safety design: a flammable vapor ignition resistant system helps prevent accidental ignition if combustible vapors reach the unit.
- CoreGard anode rod: a stainless-steel-cored anode that resists breaking away during service, extending tank protection.
Electric Tank Water Heaters
State’s electric ProLine tanks suit homes without a gas line or with modest hot water demand. Electric tanks recover more slowly than gas, but they hold heat efficiently and post higher energy factors. The range runs from compact point-of-use units up to large 120-gallon tanks, with 40 and 50-gallon models being the common household picks.
What to look for in the electric line:
- Heating elements: Incoloy or stainless steel elements resist burnout and mineral scale far better than budget copper elements.
- Insulation: thick non-CFC foam and heat-trap fittings cut standby heat loss so the tank keeps water hot with less energy.
- Maintenance: a brass drain valve makes the annual flush easier and is less likely to crack than a plastic one.
Tankless Water Heaters
If you want on-demand hot water and floor space back, State’s tankless line is where its top efficiency lives. State offers both non-condensing and condensing models, and the condensing units are generally the smarter long-term buy: they capture heat from exhaust gas to pre-warm incoming water, pushing efficiency ratings above 0.90.
Key tankless strengths:
- Dual heat exchangers: premium models pair a copper primary exchanger with a stainless steel secondary exchanger that resists the acidic condensate high-efficiency heating produces.
- PVC venting: most condensing units vent through PVC, which is cheaper and simpler to run than metal venting.
- High flow: some residential models deliver around 10 gallons per minute in warm climates, enough to run multiple showers at once.
Hybrid Heat Pump Water Heaters
State also builds a heat pump water heater in its Premier line. Instead of generating heat directly, a hybrid unit pulls warmth from the surrounding air and moves it into the water, which is dramatically more efficient than a standard electric element. ENERGY STAR certified heat pump water heaters use up to 70% less energy than a standard electric model and can save a household of four roughly $550 a year (1). ENERGY STAR puts the lifetime savings for that same household at more than $5,610, with the payback on the higher purchase price landing at about three years. They cost more upfront and work best in a warm space like a garage or basement with enough surrounding air.
Solar Water Heating
For homeowners chasing the lowest utility bills, State offers a Premier Solar system that uses roof-mounted collectors to capture thermal energy and pre-heat water, backed by an electric element for cloudy stretches. Solar is a larger investment with a longer payback, but an ENERGY STAR certified solar water heating system can cut annual hot water costs in half (2), so the savings compound over the life of the system.
How State Compares to the Competition
State plays in the same league as other professional and trade-focused brands. Bradford White is the other classic plumber-channel name and is similarly hard to find at retail. Rheem and its sister brand tend to be more visible on big-box shelves. In tankless, dedicated specialists like Rinnai and Navien are the benchmarks many installers compare against. Because State shares its bones with A.O. Smith, cross-shopping the two often comes down to price and what your plumber stocks rather than a real quality gap.
It also helps to compare by type rather than by brand alone, since fuel and format drive most of the cost and efficiency differences. The ranges below are general market figures for planning, not quotes for any specific model.
| Type | Typical Efficiency | Typical Lifespan | Installed Cost Range | Best For |
|---|---|---|---|---|
| Gas tank | UEF around 0.60 to 0.70 | 8 to 12 years | About $1,000 to $2,500 | Homes with a gas line and steady demand |
| Electric tank | UEF around 0.90 to 0.95 | 8 to 12 years | About $800 to $2,000 | Homes without gas or with lower demand |
| Gas tankless | UEF around 0.80 to 0.95 | Up to 20 years | About $2,100 to $5,600 | Endless hot water and space savings |
| Hybrid heat pump | UEF around 3.0 to 4.0 | 10 to 15 years | Higher upfront, lowest running cost | Warm utility spaces, lowest bills |
What State Water Heaters Cost to Buy and Install
Because State sells through the trade, the price you pay bundles the unit with professional installation, so think in installed terms. As general market guidance, a standard gas tank commonly runs about $1,000 to $2,500 installed, an electric tank about $800 to $2,000, and a gas tankless roughly $2,100 to $5,600 once you account for venting and gas-line work. Complex jobs that need new venting, electrical upgrades, or a gas line can push higher.
Labor is a real slice of that. A straightforward electric tank swap often runs $150 to $450 in labor, while a gas tank swap runs more, and adding or upsizing a gas line adds several hundred dollars. A hybrid heat pump or condensing tankless costs the most upfront but returns the difference through lower operating costs, and utility rebates or efficiency incentives can offset the premium. Check current federal, state, and utility programs before you buy, since they change often.
Warranty and Support
State’s warranties scale with the tier you choose. Tank models typically carry limited warranties from 6 to 10 years on the tank and parts, with the step-up ProLine Master and Premier lines extending coverage through larger or additional anode rods. Tankless units generally carry longer protection, often up to 15 years on the heat exchanger with shorter coverage on parts.
Support flows through the installer by design. Because State backs professional plumbers, the usual path when something goes wrong is to call the installer, who coordinates with State’s technical support, though you can also reach the company directly for warranty verification. One recurring theme in owner feedback is that problems more often trace to a unit sized too small for the household than to a mechanical defect, which is another argument for a pro who sizes the system correctly.
Where to Buy State Water Heaters
This is the biggest practical difference between State and consumer shelf brands. State operates primarily as a wholesale, trade-channel brand, so you generally will not find its full lineup at a big-box retailer. The standard route is to hire a licensed plumber who works with State products; the plumber sources the unit through a plumbing distributor and handles installation.
That channel is a feature, not a hurdle. Professional installation is what keeps the unit safe, code-compliant, and warranty-valid, which matters most for gas and tankless models where venting and combustion are involved. A handful of models may surface through third-party sellers, but buying through a licensed installer is the reliable path and the one State’s warranty structure is built around.
A Short History of State Water Heaters
State Water Heaters has deep American manufacturing roots. Herbert Lindahl Sr. founded the company in 1946 in a small garage in Nashville, Tennessee, initially building coal and wood-burning stoves. It moved into electric water heaters by 1948 and gas models by 1954, and it built a reputation for engineering improvements such as sandblasted tanks for better lining adhesion in the late 1970s. A.O. Smith acquired State Industries in 2001, and today the brand is manufactured in the United States with operations centered in Ashland City, Tennessee.
