How much hot water does the GCG-50 deliver?

It has a 50-gallon nominal tank and an 81-gallon first hour rating. Recovery is about 41 gallons per hour at a 90°F rise, enough for several showers in a row.

Is it energy efficient compared with other gas heaters?

Its 0.62 Uniform Energy Factor is typical for a standard atmospheric-vent tank and it is not ENERGY STAR qualified. Condensing and heat pump water heaters do better on efficiency but cost more and often need different venting or power.

Does it need electricity to run?

No. The electronic gas control is powered by a thermopile, so it works without an external power source. The push-button piezo ignitor lights the burner.

What venting does it require?

It is a standard atmospheric-vent unit, so it needs a vertical flue with proper draft, not a side-wall power vent. Check your existing flue before swapping in a power-vent model.

What is the warranty?

It carries a 6-year limited tank warranty. The stainless-core anode rod is designed to extend tank protection beyond a standard anode.

Will it fit where my old 50-gallon heater sat?

It stands 60 3/4 inches tall, so measure ceiling and flue clearance. It uses standard gas and water connections, but a taller cabinet can be tight in low closets.

A.O. Smith ProLine GCG-50 40,000 BTU Residential Gas Water Heater, 6-Year Warranty, Tall (Natural Gas)

Q: Where is the A.O. Smith ProLine GCG-50 40,000 BTU Residential Gas Water Heater, 6-Year Warranty, Tall (Natural Gas) cheapest?

At AF Supply, for $958.16, as of our latest check.

Q: What do buyers say about the A.O. Smith ProLine GCG-50 40,000 BTU Residential Gas Water Heater, 6-Year Warranty, Tall (Natural Gas)?

Buyers like: Easy to order; Good experience; Easy ordering and a great price.

Q: Where can I buy the A.O. Smith ProLine GCG-50 40,000 BTU Residential Gas Water Heater, 6-Year Warranty, Tall (Natural Gas)?

5 stores we checked sell it, including AF Supply, Ferguson, SupplyHouse.com, Bath1, Ingrams Water & Air Equipment.

Best price now

$958.16at AF SupplyChecked 1 h ago

Compared across 5 stores. Prices are checked against each store and labelled with when.

Visit AF Supply

A.O. Smith ProLine GCG-50 40,000 BTU Residential Gas Water Heater, 6-Year Warranty, Tall (Natural Gas)

Best price now

A.O. Smith ProLine GCG-50 40,000 BTU Residential Gas Water Heater, 6-Year Warranty, Tall (Natural Gas)

Best price now

Ask our agent about this product

Price facts

Our take on the A.O. Smith ProLine GCG-50 40,000 BTU Residential Gas Water Heater, 6-Year Warranty, Tall (Natural Gas)