ProLine® Low NOx 40-Gallon Direct Vent FVIR-compliant Liquid Propane Water Heater

Model GS6-40-HBDS 301
5 out of 5 Customer Rating
ProLine® Low NOx 40-Gallon Direct Vent FVIR-compliant Liquid Propane Water Heater is rated 4.7 out of 5 by 108.
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Capacity (Gallons)
Fuel Source
Height Classification
Advanced Options
First Hour Rating
Side Loop
Maximum BTU's

  • Meets Your Hot Water Demands—Delivers a 64-gallon first hour rating
  • Energy Efficient - 38,000 BTU input direct vent design delivers up to 0.60 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 40-Gallon Direct Vent FVIR-compliant Liquid Propane Water Heater
    Model GS6-40-HBDS 301
    5 out of 5 Customer Rating
    ProLine® Low NOx 40-Gallon Direct Vent FVIR-compliant Liquid Propane Water Heater is rated 4.7 out of 5 by 108.
    • y_2025, m_10, d_1, h_9
    • bvseo_bulk, prod_bvrr, vn_bulk_3.0.42
    • cp_1, bvpage1
    • co_hasreviews, tv_20, tr_88
    • loc_en_US, sid_gs6-40-hbds-301, prod, sort_[SortEntry(order=RATING, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
    • clientName_statewaterheaters
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    Product Details
    • Meets Your Hot Water Demands—Delivers a 64-gallon first hour rating
    • Energy Efficient - 38,000 BTU input direct vent design delivers up to 0.60 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
    • 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
    • Factory-Installed Relief Valve—CSA certified and ASME rated T&P relief valve is factory-installed
    • Peace of Mind—6-year limited tank and parts warranty for added peace of mind

    • The FVIR-compliant ProLine® Direct Vent 40-Gallon Liquid Propane Water Heater draws air from outside the home, eliminating problems caused by insufficient indoor ventilation. The GS6-40-HBDS can be vented up to 80 inches from the outside wall with no electrical power needed.

      This ProLine® Direct Vent model has a 40-gallon (nominal) tank and a 38,000 BTU liquid propane burner to deliver a first hour rating of 64 gallons and a recovery rate of 41 gallons per hour.

      A patented Green Choice® eco-friendly burner design reduces NOx emissions up to 33% and complies with Low NOx emission requirements of 40 ng/J. Environmentally-friendly insulation and factory-installed heat trap nipples reduce heat loss for maximum energy savings.

      The GS6-40-HBDS ProLine® water heater features State’s advanced tank protection, including a stainless steel CoreGard™ anode rod, Blue Diamond® glass lining, and DynaClean™ automatic sediment-cleaning—designed to help protect the tank from the corrosive effects of water and extend the life of the water heater, which is backed by a 6-year limited tank and parts warranty.

      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
    40 Gallons
    Rated Storage Volume
    39 Gallons
    UEF
    0.6
    Maximum BTUs
    38,000
    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"
    Emissions
    Low NOx
    First Hour Rating
    64 Gallons
    ASME Certified
    No
    Blanket Included
    No
    Destination Country
    US
    Flue Diameter
    4.00
    Fuel Source
    PROPANE
    Height to T&P
    42.50
    Ignition Type
    Pilot with Piezo Igniter
    Installation Type
    INDOOR
    Application
    RESIDENTIAL
    Shipping Height 
    62.5
    Shipping Length 
    31.5
    Shipping Width 
    23.5
    Side Loop
    No
    Dimension & Venting
    Type
    Water Heater
    Height
    49.5"
    Diameter
    22"
    Width
    22"
    Shipping Weight
    178 lbs
    Vent Type
    Direct Vent
    Height to Gas Valve
    14.5"
    All Reviews for ProLine® Direct Vent (300 series)
    Rated 5 out of 5 by from I had a State water heater and am happy to have a replacement unit
    Date published: 2025-05-27
    Rated 5 out of 5 by from Good Product This is the second State direct vent natural gas water heater that I have purchased. I'm very pleased with the quality and dependability.
    Date published: 2024-10-03
    Rated 5 out of 5 by from Great Value Great Contractor and product. Looking forward to many years of service.
    Date published: 2024-06-04
    Rated 5 out of 5 by from Much Needed The State Water heater (50 gallons) was the original one purchased in 1995 when we bought our home. It finally gave up the ghost in April 2024. Pro-Tec Plumbing and Drain LLC installed the same make and model and brought it up to code. Didn't realize so much change in almost 20 years. The model is quite and provides thoroughly hot water. Solidly built. No issues thus far. If there's one thing I would have done, I would have opted for a larger model (one that's 55 gallons). Overall, we're happy.
    Date published: 2024-04-27
    Rated 5 out of 5 by from Replacement Water Heater This was a replacement of a 16 year old heater. The water heats up quickly, the unit is quiet and is performing well. The contractor plumber that installed it explained the controls and diagnostic code which are very clear to understand.
    Date published: 2023-12-30
    Rated 5 out of 5 by from Great features Just recently had this water installed. Thus far, it has given excellent service and hot water.
    Date published: 2023-05-02
    Rated 5 out of 5 by from Works good! Good product for my home. Just what I needed! Looks like it's going to last me till I sell the house
    Date published: 2023-03-30
    Rated 5 out of 5 by from Replaced exact unit but maybe an upgrade My older unit was 17-18 years old and finally leaked. No problem as it was a great unit that served us well. Happy that my contractor found the identical unit sizing for my replacement as I did not want to go back to an electric unit I previously had. This is a great product.
    Date published: 2023-03-25
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