ProLine® Low NOx 50-Gallon Atmospheric Vent Tall Liquid Propane Water Heater

Model GS6-50-BCTL 401
5 out of 5 Customer Rating
ProLine® Low NOx 50-Gallon Atmospheric Vent Tall Liquid Propane Water Heater is rated 4.7 out of 5 by 991.
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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 84-gallon first hour rating
  • Energy Efficient—37,000 BTU input atmospheric vent design delivers up to 0.62 Uniform Energy Factor
  • Recirculation Taps Included—Includes side mounted recirculation taps for easy installation with combination space heating/potable water heating applications

    • ProLine® Low NOx 50-Gallon Atmospheric Vent Tall Liquid Propane Water Heater
    Model GS6-50-BCTL 401
    5 out of 5 Customer Rating
    ProLine® Low NOx 50-Gallon Atmospheric Vent Tall Liquid Propane Water Heater is rated 4.7 out of 5 by 991.
    • y_2025, m_12, d_14, h_11
    • bvseo_bulk, prod_bvrr, vn_bulk_3.0.42
    • cp_4, bvpage2n
    • co_hasreviews, tv_164, tr_827
    • loc_en_US, sid_gs6-50-bctl-401, 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
    32.4 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
    4.1 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
    80 gallons
    max tub size
    modal-cost
    tooltip
    The estimated annual cost to operate this water heater in your location
    $781/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 84-gallon first hour rating
    • Energy Efficient—37,000 BTU input atmospheric vent design delivers up to 0.62 Uniform Energy Factor
    • Recirculation Taps Included—Includes side mounted recirculation taps for easy installation with combination space heating/potable water heating applications
    • 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
    • Peace of Mind—6-year limited tank and parts warranty for added peace of mind

      • The ProLine® GS6-50-BCT 50-Gallon Atmospheric Vent Tall Liquid Propane 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 37,000 BTU propane burner, the GS6-50-BCT Atmospheric Vent delivers a first hour rating of 84 gallons and a recovery rate of 43 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
    0.62
    Maximum BTUs
    37,000
    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
    84 Gallons
    ASME Certified
    No
    Blanket Included
    No
    Destination Country
    US
    Flue Diameter
    4.00
    Fuel Source
    PROPANE
    Height to T&P
    50.50
    Ignition Type
    Pilot with Piezo Igniter
    Installation Type
    INDOOR
    Application
    RESIDENTIAL
    Shipping Height 
    61
    Shipping Length 
    26.63
    Shipping Width 
    23.13
    Side Loop
    Yes
    Dimension & Venting
    Type
    Water Heater
    Height
    57"
    Diameter
    22"
    Shipping Weight
    161 lbs
    Vent Type
    Atmospheric Vent
    Height to Gas Valve
    12.5"
    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 Liquid Propane Water Heater
    Adapt®+ Premium Condensing 199,000 BTU Natural Gas Tankless Water Heater
    GS6-50-BCTL
    STHR-199M
    current Product
    option 1
    Rebates up to $300 +
    Rebates up to $300 +
    Nominal Capacity
    50 Gallons
    Rated Storage Volume
    48 Gallons
    Diameter
    22"
    Width
    16.53"
    Depth
    25.5"
    16.12"
    Height
    57"
    34"
    Shipping Weight
    161lbs
    125lbs
    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"
    3/4-in"
    First Hour Rating
    84 Gallons
    Thermal Efficiency
    0%
    0%
    All Reviews for ProLine® Atmospheric Vent (400 series)
    Rated 5 out of 5 by from Easy Install Service lines gas and water line up very well. Overflow and cleanout lines are nicely located.
    Date published: 2023-12-26
    Rated 5 out of 5 by from Excellent Heating Works great, heats water quickly and quietly. Easy to operate.
    Date published: 2023-12-21
    Rated 5 out of 5 by from Water Heater The water heater is working fine after two years. Had it professionally flushed by FH FURR annually.
    Date published: 2023-12-21
    Rated 5 out of 5 by from Long lived. Our home was built in 1991. A State Water Heater was original equipment in our home. We just replaced it yesterday (12/14/23) after 32 years and three months of service! It was STILL working….it had just lost a bit of effectiveness so we decided that it was time to change water heaters but not brands. Here on day two the new one is working great and I’m confident that it will continue to do so.
    Date published: 2023-12-15
    Rated 5 out of 5 by from New State Water Heater Love that it has a flood shut off, my old one did not.
    Date published: 2023-12-12
    Rated 5 out of 5 by from Great features, always keeps enough water hot! We bought this heater because our old, 40-gallon water heater couldn't keep up with our uses in our five-bedroom, three-and-one-half bath home. This heater is the complete opposite! Even though it only holds ten more gallons, its system makes sure enough hot water is always available -- we've never had problem with that!
    Date published: 2023-11-28
    Rated 5 out of 5 by from so far very good Product Great installation. Everything is working well. No leaks and plenty of hot water.
    Date published: 2023-11-26
    Rated 5 out of 5 by from Highly recommend I highly recommend Star Water Heaters. Excellent craftsmanship.
    Date published: 2023-11-20
    Rated 5 out of 5 by from State Select Water Heater (Gas) The water heater - State Select, came with the new single family two-storey home built in 2008. Used it since then for almost 15 years. There were two of them installed - one for the 1st floor and another for 2nd floor. The one for 1st floor, of late, started to leak water from the bottom and so when asked with plumbers, I was told there could have been corrosion and it wasn't worth repairing it. I called up John Klassen co and they delivered a brand new one the next day. It was an easy fix. Though the manufacturer warranty is for 6 years the original one lasted for about 15 years. I hope this new one (gas operated) will last at least 12+ years.
    Date published: 2023-11-16
    Rated 5 out of 5 by from nice and simple installation was fast and simple. No issues, no gimmicks, no fuss.
    Date published: 2023-11-05
    Rated 5 out of 5 by from Great controls of water temperture Happy with water heater. Streamline Plumbing installed heater next day after I called them. Great company cleaned up after themselves.
    Date published: 2023-11-02
    Rated 5 out of 5 by from Great heater for the price! Our new water heater was installed just yesterday and we are already very satisfied with it's performance.
    Date published: 2023-11-02
    Rated 5 out of 5 by from Replaced my older state water heater Highly recommended water heater. I replaced another state water heater (9 years old) that started leaking a couple of months ago. We went with another state water heater due to the reliability and the tanks are well made.
    Date published: 2023-10-27
    Rated 5 out of 5 by from Lasted a looong time House was built in 1999, just replaced original water heater Oct. of 2023. Wow. Developed a little leak. Amazingly I never flushed it or replaced anything in it. 0 maintenance on my part. Don’t know if the new ones att as good.
    Date published: 2023-10-18
    Rated 5 out of 5 by from HOT! Our 20 year old water heater crapped out; this is the one our plumber recommended. It is amazing!
    Date published: 2023-10-12
    Rated 5 out of 5 by from Solid Construction and Simple Design We had to replace our old gas water heater, after 21 years and two months! This particular replacement heater is 50 gallons, a 10 gallon increase from the last one. The size of the unit is significantly smaller than the original one and the exterior electrical modules appear much easier to use and monitor. After only a few hours of testing and use today, we are happy with our new unit. The real test will be if this new gas hot water heater lasts for as long as our old unit!
    Date published: 2023-10-03
    Rated 5 out of 5 by from New water tank Just installed a week ago. So far so good. Seems to heat water up faster
    Date published: 2023-10-02
    Rated 5 out of 5 by from The heater is working very well I bought this heater about 3 years ago. The heater is working very well .
    Date published: 2023-09-28
    Rated 5 out of 5 by from Great features! Bought this yesterday and it’s so nice to have hot water! ❤️
    Date published: 2023-09-26
    Rated 5 out of 5 by from Great product Old water heater failed, had this one installed and it is performing great.
    Date published: 2023-09-21
    Rated 5 out of 5 by from Very good product The one we replaced lasted 15 years. Rusted on bottom of tank. It’s go for another 15 years. Love the water heater.
    Date published: 2023-09-21
    Rated 5 out of 5 by from Water heater This was recommended by my HVAC Specialist. I trust him. Just installed, too soon to make judgements.
    Date published: 2023-09-20
    Rated 5 out of 5 by from Great Heater Replaced my previous State water heater that I had for 12 years and 3 months. The new heater work fine, but it is too early to rate it for long term performance. It looks good, and it does generate a good supply of hot water fast.
    Date published: 2023-09-20
    Rated 5 out of 5 by from New 50 gal water heater This new water heater works great and there is more water pressure in the shower. I am very happy with our new appliance.
    Date published: 2023-09-01
    Rated 5 out of 5 by from Perfect fit! We had a real time finding a water heater with a diameter that would fit in the designated space in our home. This water heater was a perfect fit and didn’t take long for the installer to install it.
    Date published: 2023-08-12
    Rated 5 out of 5 by from Great water heater...... replaced the original A.O. Smith installed when house was built. Very happy so far.
    Date published: 2023-08-05
    Rated 5 out of 5 by from Great Features We had this installed on August 2nd. 2023 and are very happy with this Water Heater. We have it on the lower setting and the water is extremely hot so no need to set it to the higher setting.
    Date published: 2023-08-03
    Rated 5 out of 5 by from Replaced an older model that did a great job. The one that I installed seems to being doing great. However I installed this product 10 days ago therefore it is too early to provide valid ratings some of the questions being asked on this review.
    Date published: 2023-07-27
    Rated 5 out of 5 by from Looks great Quick install and Tyler and Marty (I think was his name) were excellent. No mess.
    Date published: 2023-07-25
    Rated 5 out of 5 by from perfect! I have only had this heater for a day but for the price it is worth every penny.
    Date published: 2023-07-20
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