Expansion Tanks
AO Smith 100119318 BTR-400 Master-Fit 100 Gallon, 390 Input MBtu Commercial Natural Gas Water Heater - 3 Year Warranty
In Stock. Ships in 1-7 Business Days.

1 days | 2 days | 3 days | 4 days | 5 days | 6 days | 7+ days | |
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If picked up on... | Will be delivered by... | ||||||
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Tuesday | Wed | Thu | Fri | Mon | Tue | Wed | Thu |
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Friday | Mon | Tue | Wed | Thu | Fri | Mon | Tue |
Saturday | Tue | Wed | Thu | Fri | Mon | Tue | Wed |
Sunday | Tue | Wed | Thu | Fri | Mon | Tue | Wed |
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
$75 | NY / NJ / CT Metro Area |
$220-$300 | EAST COAST By Zip Code & Weight |
$300-$400 | MIDWEST / SOUTH By Zip Code & Weight |
$400-$450 | WEST COAST By Zip Code & Weight |
Need it faster? Alternatives are available. For any questions regarding shipping cost please call us at (973) 482-4444 or email [email protected]. Please enter zip code at checkout for EXACT rates, these are estimates!
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
$75 | NY / NJ / CT Metro Area |
$220-$300 | EAST COAST By Zip Code & Weight |
$300-$400 | MIDWEST / SOUTH By Zip Code & Weight |
$400-$450 | WEST COAST By Zip Code & Weight |
Need it faster? Alternatives are available. For any questions regarding shipping cost please call us at (973) 482-4444 or email [email protected]. Please enter zip code at checkout for EXACT rates, these are estimates!
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
$75 | NY / NJ / CT Metro Area |
$350-$500 | EAST COAST By Zip Code & Weight |
$450-$750 | MIDWEST / SOUTH By Zip Code & Weight |
$650-$900 | WEST COAST By Zip Code & Weight |
Need it faster? Alternatives are available. For any questions regarding shipping cost please call us at (973) 482-4444 or email [email protected]. Please enter zip code at checkout for EXACT rates, these are estimates!
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
$75 | NY / NJ / CT Metro Area |
$450-$550 | EAST COAST By Zip Code & Weight |
$600-$900 | MIDWEST / SOUTH By Zip Code & Weight |
$950-$1300 | WEST COAST By Zip Code & Weight |
Need it faster? Alternatives are available. For any questions regarding shipping cost please call us at (973) 482-4444 or email [email protected]. Please enter zip code at checkout for EXACT rates, these are estimates!
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
$75 | NYC Metro Area |
$160 | Rest Of Contiguous US |
For any questions regarding shipping cost please Call us at 973-482-4444 or E-mail [email protected]
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
$30 | NY / NJ / CT Metro Area |
$60 | Across the USA |
For any questions regarding shipping cost please Call us at (973) 482-4444 or E-mail [email protected]
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
$75 | NYC Metro Area |
Not Available | Rest Of Contiguous US | We unfortunately can not ship this material outside of our trucking area. |
For any questions regarding shipping cost please Call us at (973) 482-4444 or E-mail [email protected]
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
$30 | Across the USA |
For any questions regarding shipping cost please Call us at 973-482-4444 or E-mail [email protected]
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
$60 | Across the USA |
Need it faster? Alternatives are available. For any questions regarding shipping cost please call us at (973) 482-4444 or email [email protected]. Please enter zip code at checkout for EXACT rates, these are estimates!
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
$70 | Across USA |
Need it faster? Alternatives are available. For any questions regarding shipping cost please call us at (973) 482-4444 or email [email protected]. Please enter zip code at checkout for EXACT rates, these are estimates!
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
$110 | Across USA |
Need it faster? Alternatives are available. For any questions regarding shipping cost please call us at (973) 482-4444 or email [email protected]. Please enter zip code at checkout for EXACT rates, these are estimates!
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
Free | Pickup |
$75 | NY / NJ / CT Metro Area |
Not Deliverable | Rest of Contiguous USA |
Need it faster? Alternatives are available. For any questions regarding shipping cost please call us at (973) 482-4444 or email [email protected]. Please enter zip code at checkout for EXACT rates, these are estimates!
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
Free | NY / NJ / CT Metro Area |
$200 | Across USA |
Need it faster? Alternatives are available. For any questions regarding shipping cost please call us at (973) 482-4444 or email [email protected]. Please enter zip code at checkout for EXACT rates, these are estimates!
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
$40 | Across USA |
Need it faster? Alternatives are available. For any questions regarding shipping cost please call us at (973) 482-4444 or email [email protected]. Please enter zip code at checkout for EXACT rates, these are estimates!
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
FREE | NY / NJ / CT Metro Area |
$220-$300 | EAST COAST By Zip Code & Weight |
$300-$400 | MIDWEST / SOUTH By Zip Code & Weight |
$400-$450 | WEST COAST By Zip Code & Weight |
Need it faster? Alternatives are available. For any questions regarding shipping cost please call us at (973) 482-4444 or email [email protected]. Please enter zip code at checkout for EXACT rates, these are estimates!
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
Free | NY / NJ / CT Metro Area |
$50 | Across USA |
Need it faster? Alternatives are available. For any questions regarding shipping cost please call us at (973) 482-4444 or email [email protected]. Please enter zip code at checkout for EXACT rates, these are estimates!
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
$90 | Across USA |
Need it faster? Alternatives are available. For any questions regarding shipping cost please call us at (973) 482-4444 or email [email protected]. Please enter zip code at checkout for EXACT rates, these are estimates!
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
Free | NY / NJ / CT Metro Area |
$75 | Across USA |
Need it faster? Alternatives are available. For any questions regarding shipping cost please call us at (973) 482-4444 or email [email protected]. Please enter zip code at checkout for EXACT rates, these are estimates!
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
Free | NY / NJ / CT Metro Area |
$110 | Across USA |
Need it faster? Alternatives are available. For any questions regarding shipping cost please call us at (973) 482-4444 or email [email protected]. Please enter zip code at checkout for EXACT rates, these are estimates!

$11,151.00

$6,733.80

$7,879.50

$9,301.50

$8,767.00

$11,389.00

$17,616.60

$15,634.80

$10,938.60

$8,971.20

$9,505.80

$8,958.00

Product details
Product Features:
- BTR-400 Water Heater Specifications
- Gallon Capacity - 85 Gallons
- Recovery Capacity GPH 100¬ Rise - 387
- Vent Size (inches) - 8
- Input BTU/HR - 390,000
- Height to Vent (inches) - 75 1/2
- Diameter (inches) -30 1/4
- ASME Construction
- Three year Limited Tank Warranty
- Design-certified by UL, according to ANSZ21.10.3 - CSA 4.3 standards governing storage-type water heaters
- Meets ASHRAE/IESNA 90.1-1999
- Design-certified by Underwriters Laboratories Sanitation to NSF Standard 5 for 180¬F water
- Optional ASME tank construction available
Codes and Standards
AO Smith Commercial Master-FIT® BTR Water Heater

MASTER-FIT® BTR
The Master-Fit BTR series provides outstanding performance and maximum installation flexibility for both new construction and replacement applications. Multiple options for placement of water connections and low installation clearances are additional installer-friendly features
- FACTORY-INSTALLED DRAFT DIVERTER AND AUTOMATIC FLUE DAMPER
- Low-profile draft diverter helps for installation in tight spaces
- Automatic motorized flue damper helps minimize standby heat loss
- BTR-500 Model features induced draft design and no damper
- Hot and cold water connections can be made through front, top or back of unit
- Eliminatorâ„¢ system operates when cold water is connected through front
- Exclusive process provides superior protection against corrosion
- CoreGardâ„¢ anode rods with stainless steel cores provide additional corrosion protection
- Eliminates standing pilot, saves energy
- Includes power ON/OFF switch
- Provides flame failure response in less than one second
- Designed to significantly reduce or eliminate sediment build-up inside the tank
- Reduced sediment build-up maintains rated thermal efficiency and reduces water heating costs
- Self-cleaning system maximizes tank life

- For BTR-120 through BTR-200, Part Number 100110445
- For BTR-250 through BTR-400, Part Number 100109235
- For installation of approved power venter to operate in conjunction with water heater thermostat
- Field wiring should conform to latest version of the National Electric Code ANSI/NFPA No.70
- Manual-reset gas shut-off device prevents excessive water temperature
- Adjustable thermostat with 120ºF — 180ºF range
- Gas pressure regulator and pilot filter
- 3-Year Limited Tank and 1-Year Limited Parts Warranty
MECHANICAL VENTING KITS
Specification Sheet
MPN ? Manufacturer Part Number | 100119318 |
---|---|
UPC / GTIN | 671657957001 |
Manufacturer | AO Smith |
Series ? A manufacturer's grouping of items that match, coordinate, or complement each other. | Master-Fit |
Height (Inches) ? The vertical measurement from bottom to top, measured in inches. | 75-1/2" |
---|---|
Width (Inches) ? The horizontal measurement from left to right, measured in inches. | 30-1/4" |
Depth (Inches) ? Depth | 30-1/4" |
Gallons | 100 Gallons |
Vent Size (Inches) | 8" |
BTU Input | 390,000 |
Weight ? Weight | 875.00 |
Warranty ? The terms and conditions of the warranty provided for the product from the manufacturer. | 3 Years |
---|---|
Water Heater Type | Commercial |
Type | Tall |
Water Connection Location | Top |
Venting Type | Atmospheric Vent |
Fuel Type | Natural Gas |
Energy Star | No |
Product Warranty | 3 Years Tank / 1 Year Parts Warranty |
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