AO Smith Water Heaters

AO Smith water heaters — a full lineup of gas, electric, tankless, and hybrid models installed and serviced by Spartanburg's trusted plumber.

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AO Smith is one of the largest water heater manufacturers in North America, producing a wide range of residential and commercial units that span every major technology — gas tank, electric tank, tankless, and hybrid heat pump. That breadth is a real advantage: for almost any Spartanburg home or business, there's an AO Smith model that fits the space, fuel supply, and hot water demand. H3 Plumbing & Drains installs and services AO Smith units across the Upstate, pairing the brand's solid engineering with professional workmanship.

Why Homeowners Choose AO Smith

Wide product range: From compact electric tanks for small apartments to high-output commercial systems for restaurants and hotels, AO Smith covers the full spectrum.
High-efficiency options: AO Smith's Voltex® hybrid heat pump and Signature® condensing tankless lines push efficiency well above standard tank technology.
Widely available parts: As a major manufacturer, AO Smith replacement parts are easy to source, which keeps repair times and costs down.
Strong warranty coverage: Many AO Smith residential models carry 6-year or longer limited tank warranties, with additional coverage on parts and labor on select models.

AO Smith Models We Install

Signature® Gas Tank Water Heaters: Reliable, fast-recovering gas units in a range of capacities for everyday Spartanburg homes. Good for households with natural gas or propane who want dependable hot water without a major efficiency investment.
Signature® Electric Tank Water Heaters: Straightforward electric storage heaters with durable elements and corrosion-resistant tanks. An accessible, long-lasting option for homes without a gas line.
Signature® Tankless Gas Water Heaters: On-demand gas units that heat water only as you need it, cutting standby losses and delivering continuous supply for busier households.
Voltex® Hybrid Electric Heat Pump: AO Smith's flagship high-efficiency electric unit draws heat from surrounding air rather than generating it, using a fraction of the electricity of a conventional tank. One of the best choices for lowering water heating bills in Upstate South Carolina's mild climate.
Commercial and High-Recovery Systems: Heavy-duty units for businesses, multi-family properties, and high-demand applications that need consistent, large-volume hot water without interruption.

The Voltex® Hybrid Heat Pump: Worth a Closer Look

The AO Smith Voltex® is one of the most efficient water heaters we install. By extracting heat from the air in a garage, basement, or utility room rather than generating heat with electrical resistance, it can cut water heating electricity use by up to 70% compared to a standard electric tank. Multiple operating modes — Heat Pump, Hybrid, High Demand, and Vacation — let you balance efficiency and output depending on the season and your household's needs. For Spartanburg homeowners with an existing gas-line heater who are considering electrification, this is often the most cost-effective upgrade available.

Professional Installation Across Spartanburg

Every AO Smith installation we do starts with the right sizing calculation — household size, simultaneous fixture use, fuel type, and efficiency goals. From there, we handle permits, old-unit removal, expansion tanks where required, proper drain pans, and a full start-up check. For hybrid heat pump units, we confirm adequate cubic footage and ambient temperature range before recommending installation. You get the right unit in the right spot, installed the right way.

Repairs and Maintenance for AO Smith Units

We service both tank and tankless AO Smith models. Common repairs include:

Heating element and thermostat replacement on electric units
Gas valve, ignition, and burner repairs on gas models
Heat pump compressor and fan diagnostics on Voltex® units
Tankless heat exchanger descaling and flow sensor repair
Anode rod inspection and replacement on tank models

Routine maintenance — tank flushes, anode checks, and burner inspections — extends your AO Smith unit's service life and keeps it running at rated efficiency.

Your Local AO Smith Experts

H3 Plumbing & Drains serves Spartanburg, Roebuck, and the surrounding Upstate with straightforward pricing, licensed technicians, and workmanship we stand behind. Whether you're replacing a failed unit or planning an upgrade, we'll walk you through the AO Smith lineup, recommend the model that fits your situation, and install it to last. Contact us today to schedule AO Smith water heater installation, repair, or replacement.

Why Choose H3 Plumbing & Drains?

Licensed & Insured
All work performed by licensed, insured plumbing professionals.
The Most Correct Solution
We diagnose the root cause and fix it right — no band-aids, no unnecessary upsells.
Same-Day Service
We respond fast. Most service calls are scheduled same-day or next-day.
Honest, Upfront Pricing
We quote before we work. No surprise charges, ever.

Frequently Asked Questions

Is AO Smith a good brand of water heater?

Yes. AO Smith is one of North America's largest water heater manufacturers, and they produce reliable units across every technology — gas, electric, tankless, and hybrid. For Spartanburg homeowners, their combination of product availability, solid build quality, and good parts support makes them a dependable choice at several price points.

How efficient is the AO Smith Voltex® hybrid heat pump?

The Voltex® is among the most efficient electric water heaters available, using up to 70% less electricity than a standard resistance element tank by pulling heat from surrounding air. It works best in spaces with enough volume and consistent ambient temperature — garages and basements in our Upstate climate are ideal. We assess your space during the estimate to confirm it's a good fit.

What size AO Smith water heater do I need?

For tank models, we match capacity to your First Hour Rating — the amount of hot water the unit can deliver in the first hour of use — based on how many people live in your home and your peak morning usage. For tankless, we calculate your peak simultaneous flow rate. Getting the sizing right the first time is the single most important factor in long-term satisfaction.

Do you repair AO Smith water heaters?

Yes. We repair both tank and tankless AO Smith models, including heating elements, thermostats, gas valves, and tankless heat exchanger descaling. Because AO Smith parts are widely available, repairs are usually fast and cost-effective.

How long does an AO Smith water heater last?

Gas and electric tank models typically last 8 to 12 years with proper maintenance; tankless units often reach 15 to 20 years. Annual maintenance — flushing, anode inspection for tanks, descaling for tankless — is the best way to reach the top of that range. We offer maintenance visits to keep your AO Smith unit running efficiently.