As an Amazon Associate we earn from qualifying purchases. Learn More.

Review: A.O. Smith 30 Gallon ProMax Gas Water Heater

Water Heater Review

If you’re shopping around for a new gas water heater, you should think twice and probably steer clear of the A.O. Smith 30 Gallon ProMax Gas Water Heater. Gas water heaters heat water by burning either natural gas or propane. They also need a source of air to be vented properly. Usually, a gas water heater is a great investment because more often than not, they are more than capable of providing an adequate amount of hot water for your home. Unfortunately, that doesn’t seem to be the case with the A.O. Smith ProMax.

Let’s take a look at some of the water heater’s features and customer reviews so you can make an informed decision for yourself.


The A.O. Smith 30 Gallon ProMax Gas Water Heater is a typical gas water heater with a very hefty price tag. This particular model usually costs over $1,000 dollars and includes the following:

  • 35,500 BTU gas burner
  • Delivery of 67 gallons per hour
  • XVR-30 standard vent
  • 10 year limited warranty
  • Electronic gas control
  • Brass drain valve
  • Energy factor of 0.62 (not Energy Star certified)

A.O. Smith claims the 30 Gallon ProMax is ideal for families with a high demand for hot water but there are quite a few unsatisfied customers out there who say otherwise. But let’s look at a few pros first before we get to the cons.


researching the A.O. Smith ProMax 30 Gallon Gas Water Heater it was hard to find some positive reviews, but not impossible. There are a few claims on and that the ProMax 30 Gallon Water Heater lasts over 20 years. The A.O. Smith ProMax also comes with a stainless steel core that protects the tank against corrosion. This could be the reason behind these claims of a long lifespan.

The brass drain valve built into every A.O. Smith ProMax is another plus as this special feature is more durable and tamper-resistant than other ordinary drain valves. However, despite these few shining accolades, the ProMax 30 Gallon Gas Water Heater still comes up incredibly short among customer’s expectations.


Unfortunately for A.O. Smith, customer complaints outweigh the positive feedback you can dig up about this particular water heater. is full of unsatisfied customers, all complaining about the same problems. The main issue seems to be the pilot light. One customer claims having to relight the pilot light 63 times in a seven-month period, which is totally unacceptable.

Another common complaint among customers has to do with poor customer service and the inability to receive adequate help from authorized dealers when their water heaters quit working. Customers are repeatedly told a “filter” of some sort needs to be cleaned, though it can’t be located, and it isn’t covered under the warranty.

Other complaints include frequent leaking, flooding, noise, and fires. This hot water heater sounds more like a hazard than anything else.


No. There are too many people experiencing too many of the exact same problems to risk purchasing this water heater. It’s just not worth the money to risk the damage to your home or family.

For more information on this model, click here