Weil-Mclain 118401500 EG-40 125 Input MBtu 84% AFUE Natural Gas Water Boiler (Knockdown - Assembly Required, No Tankless Coil Opening)
SKU
118401500
Out of Stock
Ground Shipment Cost: $14.95
In Stock orders typically leave our east cost warehouses in 1-2 business days.

Estimated Transit Times:
1 days | 2 days | 3 days | 4 days | 5 days | 6 days | 7+ days | |
---|---|---|---|---|---|---|---|
If picked up on... | Will be delivered by... | ||||||
Monday | Tue | Wed | Thu | Fri | Mon | Tue | Wed |
Tuesday | Wed | Thu | Fri | Mon | Tue | Wed | Thu |
Wednesday | Thu | Fri | Mon | Tue | Wed | Thu | Fri |
Thursday | Fri | Mon | Tue | Wed | Thu | Fri | Mon |
Friday | Mon | Tue | Wed | Thu | Fri | Mon | Tue |
Saturday | Tue | Wed | Thu | Fri | Mon | Tue | Wed |
Sunday | Tue | Wed | Thu | Fri | Mon | Tue | Wed |
Need it faster? Alternative are available. For any questions regarding shipping cost please call us (973)482-4444 or email [email protected]
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 | 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 |
$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!
Retail :
$4,529.00
- $951.09 =
$3,577.91
You Save (21%)
Product details
Weil-Mclain 118401500 EG-40 125 MBtu Input 84% AFUE Natural Gas Water Boiler (Knockdown – Assembly Required, No Tankless Coil Opening)
Knockdown Boiler Components

- Comes with automatic vent damper for higher efficiencies and reduced fuel consumption
- Easy access to controls for convenient servicing
- Configured for Natural Gas, intermittent electronic ignition only
- A versatile gas cast iron boiler for water or steam applications
- Cast iron heat exchanger
- Up to 84% AFUE
HIGH-EFFICIENCY CAST IRON BOILER EG

BOILER
- Factory-assembled section block
- Insulated extended jacket
- Horizontal to vertical draft hood
- Automatic vent damper (additional for EG-75)
- Combination gas valve for 24 volt
- Non-linting pilot burner
- Stainless steel burners
- Electrical junction box
- Spill switch
- Rollout thermal fuse element
WATER BOILERS ONLY:
- Built-in-air separator
- 30 PSI ASME relief valve (boiler sections tested for 50 PSI working pressure)
- Combination pressure-temperature gauge
- High-limit control
- Intermittent electronic ignition system with Weil-McLain UCM universal ignition control module (with tankless only)
- Intermittent electronic ignition system with indicator/diagnostic lights, and integrated low-water cutoff with test button (without tankless only)
- 40 VA transformer
- Plug-in connector and wiring

OPTIONAL EQUIPMENT:
- Packaged steam boilers—factory assembled and tested (P-EG-30 through 65 only)
- Left end section with openings for tankless heaters
- Tankless heaters, heater cover plates, and controls
- Automatic vent damper for EG-75 with electronic ignition
- Outdoor reset kit (for water boilers without tankless only, part #381-356-586) Low cost, simple plug-in sensor-check local utility program for possible rebate.
LIMITED TRANSFERABLE WARRANTY:
- Residential—water: 20 Years Heat Exchanger; 2 Years Parts
- Residential—steam: 10 Years Heat Exchanger; 2 Years Parts
- Commercial: 10 Years Heat Exchanger; 1 Year Parts
Specification Sheet
MPN ? Manufacturer Part Number | 118-401-500 |
---|---|
UPC / GTIN | 672619220102 |
Manufacturer | Weil-McLain |
Series ? A manufacturer's grouping of items that match, coordinate, or complement each other. | EG Series 6 |
Weight ? Weight | 505.00 |
---|---|
BTU Input | 125,000 |
AFUE | 84% |
Vent Size (Inches) | 6" |
Height (Inches) ? The vertical measurement from bottom to top, measured in inches. | 33-3/4" |
Length (Inches) ? The distance of the product's longest side, measured in inches. | 27-5/8" |
Width (Inches) ? The horizontal measurement from left to right, measured in inches. | 21-1/4" |
Material ? The material(s) used in the construction of the product. | Cast Iron |
---|---|
Boiler Type | Residential |
Fuel Type | Natural Gas |
Venting | Chimney Vent |
More from Weil-McLain
-
Weil-McLain 511-330-080 pilot assembly kitRetail : $118.00 - $11.8 =$106.20 You Save (10%)
-
Weil-McLain 510-811-457 Conversion Kit for EGH BoilersRetail : $675.00 - $67.5 =$607.50 You Save (10%)
-
Weil-McLain 511-100-005 Low Water Cutoff, 24 VRetail : $157.00 - $15.7 =$141.30 You Save (10%)
-
Weil-McLain HWS8620C1011 SPRK I M 511330095CTL IGN USC W/DPR MOLEXRetail : $252.00 - $25.2 =$226.80 You Save (10%)