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Weil-McLain Chimney Vent Boilers

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35 - 2034 (61)

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20035 - 22034 (4)

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24035 - 26034 (3)

26035+ (2)

Net I=B=R Capacity (BTU)

I=B=R, also referred to as Net Output or AHRI Capacity, is the rated heat output of a boiler after accounting for combustion efficiency, piping loss, and an extra pickup factor. We recommend sizing steam boilers based on the I=B=R rating.

30000 - 179999 (60)

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1980000+ (1)

DOE Heating Capacity (BTU)

Also referred to as Gross Output, this is the output of a boiler after accounting for combustion efficiency. We recommend sizing hot water boilers based on the DOE Heating Capacity.

40000 - 179999 (54)

180000 - 319999 (28)

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2140000 - 2279999 (2)

2280000+ (2)

Maximum Input Capacity (BTU)

The Maximum Input Capacity describes how quickly the appliance will use fuel when delivering it's maximum capacity. The units may change depending on the fuel being used.

50000 - 239999 (40)

240000 - 429999 (18)

430000 - 619999 (6)

620000 - 809999 (4)

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2710000+ (4)

AFUE (%)

AFUE (Annual Fuel Utilization Efficiency) measures the efficiency of combustion equipment over the entire heating season, and is calculated by dividing the amount of energy that is actually heating your home by the total energy contained in the fuel used by the boiler/furnace. Learn More

82.4 (2)

82.7 (4)

82.8 (6)

82.9 (9)

83 (7)

83.2 (2)

83.5 (4)

83.6 (3)

83.7 (1)

83.8 (5)

83.9 (1)

84 (11)

84.3 (1)

84.5 (1)

85 (9)

85.3 (2)

86.4 (2)

87 (1)

Efficiency (%)

81 (40)

82 (15)

Medium

Medium refers to the substance that carries heat through the heating system. Systems are either designed to use either Hot Water or Steam as a medium, and components are usually specific to one or the other.

Hot Water (68)

Steam (58)

Fuel Type

To create heat, some form of fuel is required. Fuel Type specifies what the product uses as an input to create heat.

Liquid Propane (7)

Natural Gas (93)

Oil (58)

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EG (44)

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DHW Production

DHW (Domestic Hot Water) is potable water for uses other than space heat. Some boilers are able to provide DHW "out of the box", while others can do so with the purchase of optional accessories.

Available (29)

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Weil-McLain EG - 6" - Replacement Vent Damper (Scratch & Dent) Weil-McLain - 6" - Replacement Vent Damper - For Weil-McLain (P)EG-40 and (P)EG-45 Boilers - MPN: 381800476

Model: 381800476-SD

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Weil-McLain Chimney Vent Boilers

Model: 381800476-SD

Model: 381357804

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Model: 386700404

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Model: 386700834

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Model: 386700428

Model: 386700436

Weil-McLain Chimney Vent Boiler