Common A.O. Smith problems we fix
Gas tanks
Pilot won't stay lit, burner won't fire, or the gas control flashes a status code. Common causes include a worn thermocouple or flame sensor, a failing gas control valve or a venting problem.
Electric tanks
Lukewarm water or none at all usually comes down to a burned-out heating element, a bad thermostat or a tripped high-limit switch — all replaceable parts.
Any tank
Popping or rumbling means sediment has built up on the bottom. Water around the base may be a leaking valve or fitting — or the tank itself. Your plumber will find the source and tell you honestly whether it's a repair or time for a new heater.
Why we recommend A.O. Smith tanks
For a conventional tank, A.O. Smith is our go-to: widely available replacement parts, straightforward to service and a solid range of gas and electric models. That means faster repairs and fewer surprises down the road.
Sized for your busiest morning
Tank size alone doesn't tell you much. What matters is the first-hour rating — how much hot water the heater can deliver in an hour starting full. We size your new tank around your household's busiest stretch: back-to-back showers, the dishwasher and a load of laundry. If you're running out of hot water now, it may be a failing part — or your household may have outgrown the tank. We'll tell you which.
A.O. Smith replacement
Your quote covers the new heater, connections, venting or electrical, drain pan, relief valve discharge, any code updates and removal of the old tank — one firm price. Financing is available for qualifying replacements, and your plumber can walk you through the options in person.
Replacing an electric tank and want lower operating costs? A hybrid heat pump water heater uses far less electricity — see our Rheem hybrid page. Want endless hot water? See Rinnai tankless.
Keep your tank running longer
Flushing sediment and checking the anode rod — the part that sacrifices itself so your tank doesn't rust — are the two best ways to extend a tank's life. Follow A.O. Smith's instructions for your model, or ask your plumber to handle it. Not sure if you're still under warranty? We'll help you check.
Check A.O. Smith warranty status
Our residential diagnostic fee is $89, waived when you go ahead with the repair at the quoted price. Pay by cash, check or card. Family-owned since 2011 with master and journeyman plumbers on staff, licensed in South Carolina (Mechanical License CLM.111515 MC).
A few common questions.
How long does an A.O. Smith tank water heater last?
The U.S. Department of Energy says tank water heaters typically last 10–15 years. Water quality, maintenance and installation make a big difference, so some last longer and some don't. Your plumber can check the manufacture date on the label.
Should I get a gas or electric tank?
Usually whatever you have now. Gas tanks recover faster between showers, while electric tanks are simpler and don't need venting. Switching fuels can mean new gas piping, venting or an electrical circuit, so your plumber will price both options if you're curious.
My tank is over 10 years old. Should I repair or replace it?
Not necessarily. If the tank isn't leaking and the problem is a replaceable part like an element or gas control, a repair often makes sense. If the tank itself is leaking or several parts are failing, replacement is usually the better value. You'll get prices for both.
Is my A.O. Smith still under warranty?
Send us the serial number from the label and we'll help you check with A.O. Smith's warranty lookup. Manufacturer warranties typically cover parts; labor depends on your terms, and we'll tell you what applies before any work begins.
