Is the A.O. Smith Tank at Lowe's the Same as the One a Plumber Installs?

No. A. O. Smith sells its Signature series exclusively at Lowe's, while ProLine tanks are only available through professional wholesalers and contractors. They're different product lines with different model numbers and warranties.

How Long Does an A.O. Smith Gas Tank Last?

A. O. Smith says gas tank water heaters typically last 8 to 12 years with proper maintenance. Water quality and yearly flushing play a big part.

Which A.O. Smith Tier Should I Buy?

ProLine Master is the step most homeowners notice, since the tank and parts warranty goes from 6 to 8 years on the models we listed. ProLine XE adds high-efficiency options such as condensing and heat pump tanks.

Does an A.O. Smith Heat Pump Tank Qualify for a PSEG Long Island Rebate?

It can, if the model carries the ENERGY STAR label and is on PSEG Long Island's qualified product list when you buy. PSEG Long Island lists rebates of up to $1,200 for 2026, one per account every 5 years.

A.O. Smith Hot Water Tanks on Long Island

Hot Water Tank Brand

About A.O. Smith Hot Water Tanks

O. Smith tank goes cold or starts leaking, you need it fixed today, and you need the right replacement if it's past saving. We install, repair and service A. O. Smith hot water tanks on Long Island, and we stock the common parts. Our factory-trained technicians have been doing this since 1981 for homes in Nassau and Suffolk Counties, and every estimate is free.

A. O. Smith traces its start to a Milwaukee machine shop opened in 1874, and it runs what it calls the world's largest water heater factory in Ashland City, Tennessee. The parent company also owns State Water Heaters and the Lochinvar boiler brand.

A. O. Smith sells two separate families of tanks. The ProLine family goes only through professional wholesalers and contractors, while the Signature series is sold exclusively at Lowe's. When we install an A. O. Smith tank, it's a ProLine model.

Every ProLine gas tank we've looked at uses the same core parts: a stainless steel CoreGard anode rod, a Blue Diamond glass tank lining and the DynaClean system that fights sediment on the tank bottom.

Get a Free Quote Today Call (631) 779-3196

All Models Serviced

Model Lineup

A.O. Smith Hot Water Tank Models We Install and Service

These are current A. O. Smith tanks with ratings from the maker's product pages. We service older A. O. Smith tanks too.

Model	Key Ratings	Good For
ProLine GCR-50 400 (gas, atmospheric vent)	50 gal, 40,000 BTU, 0.62 UEF, 84-gal first hour, 6-yr tank and parts	Swapping a standard chimney-vented tank
ProLine Master HWR-40 410 (gas)	40 gal, 40,000 BTU, up to 0.64 UEF, 80-gal first hour, 8-yr tank and parts, brass drain valve	Smaller homes that want a longer warranty
ProLine PCG-75L 400 (gas, high recovery)	75 gal, 75,100 BTU, 125-gal first hour, 10-yr warranty	Big families and soaking tubs
Vertex HDHE-50 400 (gas, power direct vent)	50 gal, 100,000 BTU, 0.88 UEF, 96% thermal efficiency, 118-gal first hour, 8-yr	Homes with no usable chimney
ProLine ENS-40 110 (electric)	40 gal, 4,500 W elements, 55-gal first hour, 6-yr	Homes without gas service
Voltex MAX HPTA-50 210 (heat pump tank)	50 gal, up to 3.68 UEF, 10-yr	Cutting electric water heating costs

Long Island Homes

A.O. Smith Hot Water Tanks for Long Island Homes

Plenty of Long Island houses heat with oil and make hot water off the boiler. If you want a separate tank, an A. O. Smith gas tank works where you have gas service; without gas, an electric or heat pump tank is the usual answer.

Venting decides a lot. An atmospheric tank like the GCR-50 needs a working chimney. If your old oil boiler was replaced with a sealed, direct-vent unit, the water heater may now be alone on a big masonry chimney, and that can call for a liner or a power vent tank. The Vertex vents through an outside wall with PVC, CPVC or polypropylene pipe.

Heat pump tanks pull heat from the room air, so they need floor space and airflow. If you go that route, check PSEG Long Island's 2026 program: it offers up to $1,200 back on qualifying ENERGY STAR heat pump models, one per account every 5 years.

Warranty

A.O. Smith Hot Water Tank Warranty

Your coverage depends on the model. A. O. Smith's residential gas tanks carry 6, 8 or 10 year limited warranties, and the ProLine models above cover the tank and parts for the same length.

Keep the invoice. A. O. Smith's warranty papers ask for proof of purchase and proof of the installation date with any claim; without it, coverage can be dated from the manufacture date instead. The warranties we read also treat anode rods as maintenance parts and leave most labor to the owner.

On top of the manufacturer's coverage, Domino backs every installation with a 1-year labor warranty.

Compare Brands

A.O. Smith vs State Hot Water Tanks

A. O. Smith bought State Industries in 2001, and today both names belong to the same company. Its annual report says it sells through wholesale mainly under the A. O. Smith and State brands.

Put a ProLine GCR-50 400 next to a State ProLine GS6-50-BCT 400 and the listed specs match: 40,000 BTU, 0.62 UEF, 84-gallon first hour rating and a 6-year tank and parts warranty, with the same CoreGard anode and Blue Diamond lining. The differences show up in model numbers, premium line names (A. O. Smith uses Vertex, Polaris and Voltex) and which supply houses stock which brand. A. O. Smith also has its Signature line at Lowe's. You can compare both on our hot water tank brands page.

Repair & Service

A.O. Smith Hot Water Tank Repair and Service

We stock the common parts, such as anode rods, T&P relief valves, drain valves and heating elements. Book a water heater repair and we'll test the tank before we suggest anything.

No hot water and a flashing status light: the electronic gas control is reporting a fault, often a flame sensing or ignition problem.
Rumbling or popping: sediment has built up on the tank bottom and needs flushing.
Rotten egg smell in hot water: the anode rod is reacting with the water and may need a different rod.
Water around the base: either the T&P relief valve is discharging or the tank itself has failed.
Power vent tank won't fire: the blower, pressure switch or vent pipe needs checking.
Lukewarm water from an electric tank: a heating element or thermostat has failed.

Installation

A.O. Smith Hot Water Tank Installation and Replacement

The price comes down to the tank's size and tier, the venting it needs, any gas line or electrical changes, and how hard the space is to reach. Call for a quote, or read our guide to water heater replacement costs first.

We look at your current tank, venting, gas or electric supply and the space around it.
We size the new tank from your household's peak use, using first hour rating rather than gallons alone.
We give you a written quote with the model and venting plan.
We drain and remove the old tank, set the new one, and connect water, gas or power and venting to code.
We fill, fire and test the tank, then show you the settings and the warranty paperwork to keep.

A.O. Smith Hot Water Tank Installation and Repair on Long Island