ProMax® 50-Gallon Gas Water Heater

ProMax® 50-Gallon Gas Water Heater

Model GCVL-50

ProMax Gas Tank Water Heater GCVL-50 is rated 4.7273 out of 5 by 11.
Date published: 2015-01-07
Rated 3 out of 5 by from Produces Hot water, but seems excessively loud We have had this unit for less than a week and it was installed as part of our home warranty so we did not have a choice in product. The install is in the garage in our house in Arizona. Our original builder installed product failed at 4 years and the same brand replacement failed at 6 years. Luckily we had a home warranty to cover this replacement. So far the water seems really hot, and we are trying to find the right set point to use. The biggest problem is that it sounds like a jet engine at takeoff. It is so loud that you can hear it through the wall in the bedroom on the other side of the wall. Time will tell if it lasts better than the first two.
Date published: 2014-12-17
Rated 4 out of 5 by from great product I bought it a ..month ago.It is working very good. I like it.
Date published: 2014-11-15
Rated 5 out of 5 by from Great Water Boiler! I am using this water boiler for about 2 months. It is easy to use.It provides enough hot water. I am happy with the water boiler.
Date published: 2014-11-05
Rated 5 out of 5 by from Never run out of hot water Love this - never runs out of hot water. Runs very quietly
Date published: 2014-10-24
Rated 5 out of 5 by from xxxx I had this water heater installed 10 days ago and so far it is great
Date published: 2014-10-14
Rated 5 out of 5 by from New 50 Gallon Product was installed in short period of time. We are using less water now because the hot water is heating very fast. Great product!! would recommend
Date published: 2014-09-10
Rated 5 out of 5 by from Great reliable product Approximately five months of use with no problems and a steady supply of hot water.
Date published: 2014-08-13
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The Promax® 300/301 Series gas water heater is designed to deliver an economical performance that can lower your energy bills and also provide long-lasting value.

Featuring a 50-gallon tank and a 40,000 BTU gas burner, the GCVL-50 standard vent delivers a first hour rating of 93 gallons and a recovery rate of 41 gallons per hour. With an 0.58 Energy Factor, this water heater is not ENERGY STAR® qualified. It carries a 6-year limited warranty, and meets Low NOx emission requirements.

Where to Buy

Where to Buy

Ashburn, VA

Location #1

Booze Plumbing And Heating

Vienna, VA

Se Habla Español

More Info >>
Location #2

John C. Flood INC

Alexandria, VA

More Info >>
Location #3


Manassas, VA

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View All List My Company Here

Product Features & Options

Self-Powered Electronic Gas Valve

Uses a thermopile to generate the power needed to operate the electronic gas control without requiring an external power source.


The electronic gas control incorporates an LED status indicator that monitors system operation and service diagnostics.

CoreGard™ Anode Rod

A. O. Smith’s anode rods have a stainless steel core that extends the life of the anode rod allowing superior tank protection far longer than standard anode rods.

Brass Drain Valve

Our brass drain valve is more durable and tamper-resistant than an ordinary plastic drain valve, which contributes to improved safety and reliability.

How it Works

Gas water heaters heat water by burning either natural gas or LP (propane). Gas water heaters need a source of air and also need to be vented properly. Cold water enters the water heater through an internal “dip tube” which forces the cold water to the bottom of the tank and pushes hot water out through the outlet connection. This arrangement provides the most hot water for a given tank size. Most gas water heaters use a pilot light. The pilot light on some models also generates the power needed to operate an electronic gas valve. When cold water enters the tank, the temperature sensor on the gas control tells the main gas valve to open. Gas flows to the burner where it is lit by the pilot light. The air needed by the burner is supplied by the room where the water heater is installed. The exhaust gases are vented to the outside. When the proper temperature is reached, the main gas valve shuts off. Because water can corrode the steel tank, we glass line the inside of the tank and install an anode rod to help reduce corrosion. The temperature and pressure relief valve is a safety device designed to open if the internal temperature or pressure of the tank exceeds certain limits. Water heaters should be large enough to provide adequate hot water even when temperatures are cold and household demand is greatest.




limited warranty


energy factor

CSA International Low Lead Content Certification in compliance with U.S. and Canadian safety standards on gas components
ASME American Society of Mechanical Engineers
The Blue Diamond formula is enriched with a high level of zircon, producing a coating that is harder and more water-resistant than any other in the industry

Product Specifications

Tech Specs
Gallon Capacity: 50
Recovery Gallons: 41
Maximum BTUs: 40,000
Power Source: Natural Gas
Energy Factor: 0.58
Limited Tank Warranty: 6 Years
Limited Parts Warranty: 6 Years
Anode: Coregard™ Aluminum Anode
T&P Relief Valve: Yes
Ignition Type: Electronic
Water Connection Location: Top
Water Connection Size: 3/4"
Emissions: Low NOx
FVIR Certified: Yes
First Hour Rating: 93
Dimensions & Venting
Type: Short
Height: 53 1/4"
Height w/Draft Hood: 53 1/4"
Diameter: 24"
Width: 24"
Depth: 24"
Shipping Weight: 175lbs/79kg
Vent Type: Standard Vent


Rebate and incentive programs provide cash-back to consumers for the purchase of appliances that meet certain energy efficiency standards. Often, these standards are tied to the ENERGY STAR® program.

Cash for Appliances is designed to encourage the purchase of energy efficient appliances. Consumers who purchase ENERGY STAR® or CEE qualified appliances can receive cash rebates. Most states are offering rebates in the $50 to $250 range.


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Need More Hot Water?

There's no reason to run out of hot water. If you're not sure that the GCVL-50 provides enough hot water for your needs, consider these:


Effex® High Efficiency 40-Gallon Gas Water Heater

  • 6 Year Limited Warranty
  • 40,000 BTU

Effex® High Efficiency 50-Gallon Gas Water Heater

  • 6 Year Limited Warranty
  • 40,000 BTU

Vertex™ 100 Power Direct Vent 50-Gallon Gas Water Heater

  • 6 Year Limited Warranty
  • 100,000 BTU

Vertex™ Power Vent 50-Gallon Gas Water Heater

  • 6 Year Limited Warranty
  • 76,000 BTU