ProLine® 40-Gallon LP Water Heater

Model GS6-40-BCTL 401
5 out of 5 Customer Rating
ProLine® 40-Gallon LP Water Heater is rated 4.7 out of 5 by 990.
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Capacity (Gallons)
Limited Tank Warranty
Height Classification
Fuel Source
Advanced Options
First Hour Rating
Maximum BTU's
Side Loop
Diameter
ProLine® 40-Gallon LP Water Heater
Model GS6-40-BCTL 401
5 out of 5 Customer Rating
ProLine® 40-Gallon LP Water Heater is rated 4.7 out of 5 by 990.
  • y_2025, m_10, d_4, h_4
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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
22.8 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
2.9 showers
back-to-back
modal-frame
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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
2.2 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
54 gallons
max tub size
modal-cost
tooltip
The estimated annual cost to operate this water heater in your location
$880/year
est. energy cost
Based on location results for Columbus, OH 43215
modal-edit
Edit Location / Advanced Settings
Specifications
Tech Specs
Nominal Gallon Capacity
40 Gallons
Rated Storage Volume
38 Gallons
UEF
0.55
Maximum BTUs
36,000
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
67 Gallons
ASME Certified
No
Blanket Included
No
Destination Country
US
Flue Diameter
4.00
Fuel Source
PROPANE
Height to T&P
52.00
Ignition Type
Pilot with Piezo Igniter
Installation Type
INDOOR
Application
RESIDENTIAL
Shipping Height 
62
Shipping Length 
24.13
Shipping Width 
21.13
Side Loop
Yes
Dimension & Venting
Type
Water Heater
Height
58.5"
Diameter
20"
Width
20"
Shipping Weight
132 lbs
Vent Type
Atmospheric Vent
Height to Gas Valve
11.5"
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® 40-Gallon LP Water Heater
Adapt™ SC Standard Condensing 180,000 BTU Natural Gas Tankless Water Heater
GS6-40-BCTL
STM-180M-N
current Product
option 1
Rebates up to $300 +
Rebates up to $300 +
Nominal Capacity
40 Gallons
1 Gallons
Rated Storage Volume
38 Gallons
Diameter
20"
Width
20"
17.12"
Depth
23.5"
11.85"
Height
58.5"
32.46"
Shipping Weight
132lbs
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
67 Gallons
Thermal Efficiency
0%
0%
All Reviews for ProLine® Atmospheric Vent (400 series)
Rated 5 out of 5 by from Very Very happy with product Excellent product.....very happy with State water heaters and the Quality / Craftsmanship they do
Date published: 2025-09-28
Rated 5 out of 5 by from Loooong life! My original builder-installed State Select GS6-50-BRT was still going strong after 18.5 years when I broke the drain valve. My home warranty decided to replace the entire heater rather than just the valve. I'm kind of disappointed that they replaced the whole unit because I wanted to see how long I could make it last. All I ever did maintenance-wise was to open the drain valve every three months for < 30 seconds to flush out sediment until the water ran clear. As this model had only a 6-year warranty, I didn't expect it to last more than 12-15 years, so I was pleasantly surprised when it kept going well past that. Because of my 100% long and trouble-free experience with this make and model, I insisted on the identical replacement unit. I trust I will have reliable hot water for the next 18+ years.
Date published: 2025-09-04
Rated 5 out of 5 by from Quiet and good features Purchased and installed and very pleased with the product.
Date published: 2025-08-18
Rated 5 out of 5 by from Good product. 2nd of this water heater model by the same company last one made it 9 years, hope this one does too. Great installer, and great service company.
Date published: 2025-07-20
Rated 5 out of 5 by from Well built and efficient. This handles all our hot water needs.
Date published: 2025-06-17
Rated 5 out of 5 by from New Water Heater Large tank, fast recovery of hot water, no issues so far.
Date published: 2025-06-14
Rated 5 out of 5 by from Good features. Great product. Second water heater of this brand in my lifetime.
Date published: 2025-06-14
Rated 5 out of 5 by from Just installed Looks great and works great, happy with the performance.
Date published: 2025-06-06
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