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A O Smith GCB4000L010000400 ProLine 40 Gallon 40000 BTU Tall Atmospheric Vent Natural Gas Water Heater
A O Smith GCB4000L010000400 ProLine 40 Gallon 40000 BTU Tall Atmospheric Vent Natural Gas Water Heater
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A O Smith GCB4000L010000400 ProLine 40 Gallon 40000 BTU Tall Atmospheric Vent Natural Gas Water Heater
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Product Description
The A O Smith GCB4000L010000400 is a ProLine 40-gallon natural gas water heater. This tall-model features intelligent control logic, ensuring precise sensing and a faster response time for heating. The burner design is eco-friendly, reducing NOx emissions significantly. The unique Dynaclean diffuser dip tube decreases lime and sediment build-up, allowing for maximum hot water output.
- Commercial grade construction for durability
- Features intelligent control logic for efficient performance
- Eco-friendly burner design reducing NOx emissions by up to 33%
Product Highlights
This water heater is suitable for residential applications, meeting the needs for hot water efficiently and reliably.
Product Information
Standard Information
- Brand: A O Smith
- MPN: GCB4000L010000400
Technical Specifications
- Capacity: 40 gallons
- Power Rating: 40000 BTU
- Fuel Type: Natural Gas
- Vent Type: Atmospheric
- Height: Standard tank height
- Weight: 150 lb.
- Water Connection Location: Top
- Recovery Rate: 44 gallons per hour

Testimonials
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★★★★★
Absolutely transformed my backyard! The quality is fantastic, and everything feels sturdy and well-made. I’ve already had neighbours asking where I got it from!"
Sarah L.
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★★★★★
"This is hands-down the best purchase I’ve made for my garden. Easy to assemble, looks beautiful, and has held up perfectly through rain and sun."
James R.
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★★★★★
My garden has never looked better! The design is stunning, and the materials are clearly built to last. Worth every penny."
Emily P.