ProMax® Power Vent Higher EF 50-Gallon Gas Water Heater

ProMax® Power Vent Higher EF 50-Gallon Gas Water Heater

Model GPVL-50

ProMax Power Vent Higher EF Gas Tank Water Heater GPVL-50 is rated 4.56 out of 5 by 25.
Rated 4 out of 5 by from Excellent water heater We previously owned the same model (natural gas, power vent, 50 gal) and after 14 years of service needed to be replaced. Due to some exhaust venting issues, we had to continue with a power vent. This model is a little shorter and slightly bigger around than our previous model. The installer was impressed and liked the burner air intake (which is now on the back side about half way up from the floor) since he said that he'd replaced units that the intake had gotten clogged with dirt and debris. He was also impressed with the relocation of the combustible gas sensor location, which is now on the side and away from any possible damage or contamination from any water leakages. His only complaint was that he had to loosen the exhaust fan assembly on top of the heater enough to slide the retaining clip rings on the water supply lines down snugly against the top of the heater. As soon as we finished filling the tank with water and turned it on I noticed the exhaust fan was quieter than our previous model. I had to do some adapting of the exhaust piping. Our previous model had a 4" pipe and the new model had a 2". In order to connect to our existing exhaust pipe I had purchase a reducer and a 5 foot section of 2" pipe so I could cut off a 3" piece to fit into your connector and into the new reducer which then was attached to our existing 4" exhaust pipe. Other than a few adjustments to complete the replacement, it is a great heater, that's the reason for the 4 Star rating. We're looking forward to many more years of problem-free hot water.
Date published: 2014-11-29
Rated 5 out of 5 by from excelent I have this product installed yesterday . It looks perfect so far
Date published: 2014-11-21
Rated 5 out of 5 by from Just purchased I just had this installed on 11-11-14. It is too early to recommend yet. This is the 3rd LP gas water heater I've had in 13 months. The previous 2 that I had both leaked. They were Bradford White brand, NOT AO Smith. I hope I have better luck with the AO Smith.
Date published: 2014-11-12
Rated 5 out of 5 by from Great water heater! Recently moved into our new home and our family of 4 never runs out of hot water. Operation is simple and quiet, very happy with our water heater.
Date published: 2014-10-15
Rated 5 out of 5 by from hot water heater review needed to update 18 year old tank. The water is very hot compared to old system and stays hot longer. Very happy
Date published: 2014-10-05
Date published: 2014-09-24
Rated 5 out of 5 by from great product Appears to be a very well built/engineered water heater. Temperature control is nice and intuitive. Hope for many years of good service.
Date published: 2014-09-13
Rated 5 out of 5 by from very hot water right away! i believe it will lower my energy bill & will be very reliable
Date published: 2014-09-05

The Promax® Power Vent Higher EF gas water heater is engineered to maximize efficiency and deliver greater energy factor (EF), while offering greater flexibility in installation options.

Featuring a 50-gallon tank and a 40,000 BTU gas burner, the GPVL-50 Power Vent delivers a first hour rating of 73 gallons and a recovery rate of 44.7 gallons per hour. With an 0.7 Energy Factor, this water heater is 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

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Location #2


Manassas, VA

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Location #3

Offutt Plumbing Inc.

Sterling, VA

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View All List My Company Here

Product Features & Options

3-position Rotatable Blower Outlet

Our exclusive 3-position rotatable blower outlet adds flexibility for an easy installation.

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.

T&P Relief Valve

Top-mounted T&P relief valve available as an option.

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

UL Listed means that the product met UL's safety requirements
CSA International Low Lead Content Certification in compliance with U.S. and Canadian safety standards on gas components
ASME American Society of Mechanical Engineers

Product Specifications

Tech Specs
Gallon Capacity: 50
Recovery Gallons: 45
Maximum BTUs: 40,000
Power Source: Natural Gas
Energy Factor: 0.70
Limited Tank Warranty: 6 Years
Limited Parts Warranty: 6 Years
Anode: Standard Anode
T&P Relief Valve: Yes
Pilot Reset Button: Yes
Ignition Type: Electronic
Water Connection Location: Top
Water Connection Size: 3/4"
Emissions: Low NOx
FVIR Certified: Yes
First Hour Rating: 90
Dimensions & Venting
Type: Short
Height: 50 3/4"
Height w/Draft Hood: 60 1/8"
Diameter: 24"
Width: 24"
Depth: 24"
Shipping Weight: 198lbs/90kg
Vent Type: Power 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 GPVL-50 provides enough hot water for your needs, consider these:


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

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  • 100,000 BTU

Vertex™ Power Vent 50-Gallon Gas Water Heater

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