ProLine® Low NOx 50-Gallon Atmospheric Vent Tall Natural Gas Water Heater

Model GS6-50-RCT 400
3.7 out of 5 Customer Rating
ProLine® Low NOx 50-Gallon Atmospheric Vent Tall Natural Gas Water Heater is rated 4.7 out of 5 by 1003.
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Capacity (Gallons)
Limited Tank Warranty
Height Classification
Fuel Source
Advanced Options
First Hour Rating
Maximum BTU's
Side Loop
Diameter

  • Meets Your Hot Water Demands—Delivers an 89-gallon first hour rating
  • Energy Efficient—50,000 BTU input atmospheric vent design delivers up to 0.61 Uniform Energy Factor
  • Eco-Friendly Design Reduces Emissions—Patented Green Choice® Gas Burner design reduces NOx emissions by up to 33% and complies with Low NOx emission requirements

    •
    ProLine® Low NOx 50-Gallon Atmospheric Vent Tall Natural Gas Water Heater
    Model GS6-50-RCT 400
    3.7 out of 5 Customer Rating
    ProLine® Low NOx 50-Gallon Atmospheric Vent Tall Natural Gas Water Heater is rated 4.7 out of 5 by 1003.
    • y_2026, m_4, d_4, h_8
    • bvseo_bulk, prod_bvrr, vn_bulk_3.0.43
    • cp_8, bvpage2n
    • co_hasreviews, tv_167, tr_836
    • loc_en_US, sid_gs6-50-rct-400, prod, sort_[SortEntry(order=RATING, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
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    What to Expect from this Model
    modal-clock
    tooltip
    Number of minutes you can enjoy a shower before running out of hot water. Assumes a 2.1 GPM flow rate
    36.7 minutes
    single shower length
    modal-frame
    tooltip
    Number of back-to-back showers you can take without running out of hot water. Assumes a 2.1 GPM flow rate and an 8 minute shower length
    4.6 showers
    back-to-back
    modal-frame
    tooltip
    Number of showers you can take at the same time without running out of hot water. Assumes a 2.1 GPM flow rate and an 8 minute shower length
    3 showers
    at the same time
    modal-tank-capacity
    tooltip
    Biggest tub this water heater will fill without running out of hot water. Assumes a 5.0 GPM flow rate, and a 67% fill level
    82 gallons
    max tub size
    modal-cost
    tooltip
    The estimated annual cost to operate this water heater in your location
    $291/year
    est. energy cost
    Based on location results for Columbus, OH 43215
    modal-edit
    Edit Location / Advanced Settings
    Product Details
    • Meets Your Hot Water Demands—Delivers an 89-gallon first hour rating
    • Energy Efficient—50,000 BTU input atmospheric vent design delivers up to 0.61 Uniform Energy Factor
    • Eco-Friendly Design Reduces Emissions—Patented Green Choice® Gas Burner design reduces NOx emissions by up to 33% and complies with Low NOx emission requirements
    • Simple Ignition—Push-button piezo ignitor makes lighting pilot fast & easy
    • Easy-to-Use Controls—Intelligent electronic gas control provides precise temperature control and LED status indicator
    • Corrosion Protection—Patented Blue Diamond® glass tank lining protects against corrosion
    • Auto-Cleaning Feature—DynaClean™ automatic cleaning system protects against sediment build-up
    • Long-Lasting Anode—Stainless steel CoreGard™ anode rod protects against corrosion longer than ordinary anodes
    • Simple Drainage—Commercial-grade brass drain valve for durable and easy operation
    • Peace of Mind—6-year limited tank and parts warranty for added peace of mind

      • The ProLine® GS6-50-RCT 50-Gallon Atmospheric Vent Tall Natural Gas Water Heater is designed to deliver an economical performance that can lower your energy bills and provide long-lasting value.

      Featuring a 50-gallon (nominal) tank and a 50,000 BTU gas burner, the GS6-50-RCT Atmospheric Vent delivers a first hour rating of 89 gallons and a recovery rate of 54 gallons per hour. It carries a 6-year limited tank warranty and meets Low NOx emission requirements.

      Environmentally-friendly insulation and factory-installed heat trap nipples reduce heat loss for maximum energy savings.

      This ProLine® water heater is designed with State’s advanced tank features, including a stainless steel CoreGard™ anode rod, Blue Diamond® glass lining and a self-cleaning dip tube—designed to help protect the tank from the corrosive effects of water and extend the life of the water heater.

      State ProLine® water heaters are residential products built to commercial-grade standards and are only available for purchase through professional wholesalers and contractors.

    Specifications
    Tech Specs
    Nominal Gallon Capacity
    50 Gallons
    Rated Storage Volume
    48 Gallons
    UEF
    0.61
    Maximum BTUs
    50,000
    Power Source
    GAS
    Limited Tank Warranty
    6 Years
    Limited Parts Warranty
    6 Years
    T&P Relief Valve
    Yes
    Water Connection Location
    TOP
    Water Connection Size
    0.75"
    First Hour Rating
    89 Gallons
    ASME Certified
    No
    Blanket Included
    No
    Destination Country
    US
    Flue Diameter
    4.00
    Fuel Source
    NATURAL
    Height to T&P
    50.50
    Ignition Type
    Pilot with Piezo Igniter
    Installation Type
    INDOOR
    Application
    RESIDENTIAL
    Shipping Height 
    60.81
    Shipping Length 
    26.13
    Shipping Width 
    23.13
    Side Loop
    No
    Dimension & Venting
    Type
    Water Heater
    Height
    60.75"
    Diameter
    22"
    Shipping Weight
    165 lbs
    Vent Type
    Atmospheric Vent
    Height to Gas Valve
    12.25"
    Maintenance & Troubleshooting
    Maintenance

    Residential Series Atmospheric Vent Lighting the Pilot

    Troubleshooting

    Residential Series Atmospheric Vent Draft Test

    Residential Series Atmospheric Vent No Hot Water

    Residential Series Atmospheric Vent Status Code 1 Flash

    Residential Series Atmospheric Vent Status Code 2 Flash

    Residential Series Atmospheric Vent Status Code 4 Flash

    Residential Series Atmospheric Vent Status Code 5 Flash

    Residential Series Atmospheric Vent Status Code 7 Flash

    Residential Series Atmospheric Vent Status Code 8 Flash

    Residential Series Atmospheric Vent Status Code Light Continuous

    Marketing Videos
    Residential Series Atmospheric Vent Application and Installation
    Residential Series Atmospheric Vent Features and Benefits
    Residential Series Atmospheric Vent How It Works
    Find a Replacement
    Current Product
    Option 2
    ProLine® Low NOx 50-Gallon Atmospheric Vent Tall Natural Gas Water Heater
    Adapt® SC Standard Condensing 199,000 BTU Natural Gas Tankless Water Heater
    GS6-50-RCT
    STM-199M-N
    current Product
    option 1
    Rebates up to $300 +
    Rebates up to $300 +
    Nominal Capacity
    50 Gallons
    1 Gallons
    Rated Storage Volume
    48 Gallons
    Diameter
    22"
    Width
    17.12"
    Depth
    26.25"
    11.85"
    Height
    60.75"
    32.46"
    Shipping Weight
    165lbs
    93lbs
    Power Source
    GAS
    GAS
    Limited Tank Warranty
    6 Years
    0 Years
    Limited Parts Warranty
    6 Years
    5 Years
    T&P Relief Valve
    Yes
    Water Connection Location
    TOP
    BOTTOM
    Water Connection Size
    0.75"
    0.75"
    First Hour Rating
    89 Gallons
    Thermal Efficiency
    0%
    0%
    All Reviews for ProLine® Atmospheric Vent (400 series)
    Rated 5 out of 5 by from Meets my family's needs The product works like a water heater is supposed to work. It keeps the water hot and causes no problems. I could not be happier!
    Date published: 2022-03-18
    Rated 5 out of 5 by from Working great so far Only had this water heater a few weeks but it has been working great. Previous unit of a different brand didn't last ten months before breaking. Have heard good thinks about AO Smith / State so am hoping for a much better experience.
    Date published: 2022-03-13
    Rated 5 out of 5 by from Quiet and Seems to be Very Efficient! I just had this water heater installed on Thursday, so I have only had it for a few days, but so far it has met my expectations to the fullest! Very happy with my choice so far - I hope I will be for several more years. (Reasonably priced!) It's difficult to rate some of the information included in this review, as I have only had the water heater a few days, but so far very good!
    Date published: 2022-03-13
    Rated 5 out of 5 by from New home - love gas hot water! Just had a new home built and this water heater was installed. Love gas hot water! Very efficient and quick recovery. Very well built unit that should stand the test of time very well.
    Date published: 2022-03-07
    Rated 5 out of 5 by from Very good product Fast, efficient and plenty of hot water. It is a little loud when it reheats.
    Date published: 2022-03-03
    Rated 5 out of 5 by from Great Brand So far so good. My last State Water Heater lasted about 18 years.
    Date published: 2022-03-01
    Rated 5 out of 5 by from Purchases a few years ago and we are so happy with product
    Date published: 2022-02-28
    Rated 5 out of 5 by from JUST INSTALLED WORKING FINE FOR THE FIRST DAY HOPE IT KEEPS UP
    Date published: 2022-02-26
    Rated 5 out of 5 by from Awesome Replaced old one of 26 years. This is hot and a quick recovery
    Date published: 2022-02-15
    Rated 5 out of 5 by from Super Hot Water I have always been deprived of consistent hot water in my older home (1985) and this product delivers! You may got way more hot water than you could ever expect. I have 4 people living with me (including myself) and it has been having a good output. I look forward to seeing how long this will last. I only recently purchased it so will have to see how the cost savings fair up.
    Date published: 2022-02-15
    Rated 5 out of 5 by from Quick Recovery Our old water heater was on its last leg. Our plumber recommended changing it out. I am so glad we went with his suggestion. It was installed almost a year ago and I am very happy with it. It recovers very quickly and is quite when heating.
    Date published: 2022-01-19
    Rated 5 out of 5 by from Fast hot water We have had our new heater a month and wow what a difference. Two people showering same time and both have temp they want and haven’t run out of hot water like our old tank. Energy bill went up but added tankless unit to master bath same month so can’t compare bills exactly
    Date published: 2022-01-10
    Rated 5 out of 5 by from Works great!! Heats the water perfectly. Our old water heater never got the water this hot. I like that there are different settings to heat the water
    Date published: 2022-01-08
    Rated 5 out of 5 by from Great Product This unit replaced a 23 year old Rheem Hot Water Heater which was the original in our home. Hot water is now available a lot quicker than with the old unit.
    Date published: 2022-01-04
    Rated 5 out of 5 by from Very pleased with the product. I replaced my prior State water heater with the same model as I had no issues with my prior model after 20 years.
    Date published: 2021-12-29
    Rated 5 out of 5 by from Is good Easy to install Easy to install but i get problem after install relef valve start to leak
    Date published: 2021-12-27
    Rated 5 out of 5 by from AMAZING A GREAT WATER HEATER! woohoo woohoo hot water woohooooooooooooooo!
    Date published: 2021-12-21
    Rated 5 out of 5 by from Great features and best warranty I could find Bought when my old water heater started leaking. The 10 year parts and 10 year heat exchanger sold me.
    Date published: 2021-12-20
    Rated 5 out of 5 by from We had a State for 35 years and it was always dependable. Glad the plumber picked another State for us. Since it was just installed, I cannot answer some of your questions below.
    Date published: 2021-12-18
    Rated 5 out of 5 by from Long Lasting Hot Water Great product and will recommend this to all homeowners!
    Date published: 2021-12-17
    Rated 5 out of 5 by from Great new features & capabilities. Purchased & installed a month ago & have had no issues so far. Optimistic.
    Date published: 2021-12-16
    Rated 5 out of 5 by from Excellent product,,,will buy again. Always have used State Water Heaters and always will
    Date published: 2021-12-09
    Rated 5 out of 5 by from Excellent product I bought this water heater when our old one of 11 years gave out and I’m very happy with it.
    Date published: 2021-12-06
    Rated 5 out of 5 by from great features i have had this for one day and i am already loving it
    Date published: 2021-12-04
    Rated 5 out of 5 by from Like the past experience and performance The previous unit was a state installed when I built this home,21 years ago. Great service
    Date published: 2021-12-04
    Rated 5 out of 5 by from Very efficient Needed a new water heater, this model was recommended by a plumber. We are so happy that we took his suggestion because now we get hot water much faster in the second floor bathroom shower.
    Date published: 2021-12-02
    Rated 5 out of 5 by from Replacement water heater. Easy install and setup. All instructions easy to follow.
    Date published: 2021-11-25
    Rated 5 out of 5 by from Fast heating water This is a really great water heater that gives us fast hot water.
    Date published: 2021-11-05
    Rated 5 out of 5 by from Superior product My plumber recommended this tank and I am extremely satisfied with its operation.
    Date published: 2021-10-25
    Rated 5 out of 5 by from water heater I bought this on September 18, 2021 and I am very pleased with it.
    Date published: 2021-10-18
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