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Home » Gas Boilers » Standard Efficiency Gas Boilers

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Standard Efficiency Gas Boilers
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Biasi (14)

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Burnham (92)

Crown Boiler Co. (69)

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Peerless (86)

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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.

20000 - 69999 (117)

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1970000 - 2019999 (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.

30000 - 59999 (66)

60000 - 89999 (83)

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2100000 - 2129999 (2)

2190000 - 2219999 (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.

30000 - 79999 (85)

80000 - 129999 (104)

130000 - 179999 (124)

180000 - 229999 (89)

230000 - 279999 (58)

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2080000 - 2129999 (2)

2180000 - 2229999 (2)

2330000 - 2379999 (2)

2430000 - 2479999 (2)

2580000 - 2629999 (2)

2730000 - 2779999 (2)

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

81.4 (5)

81.5 (2)

81.8 (2)

81.9 (5)

82 (74)

82.1 (21)

82.2 (21)

82.3 (12)

82.4 (13)

82.5 (5)

82.6 (8)

82.7 (16)

82.8 (12)

82.9 (14)

83 (41)

83.1 (10)

83.2 (16)

83.3 (13)

83.4 (12)

83.5 (14)

83.6 (4)

83.7 (6)

83.8 (4)

83.9 (4)

84 (73)

84.1 (6)

84.3 (1)

84.4 (3)

84.5 (6)

85 (30)

85.1 (10)

85.2 (19)

85.3 (6)

85.4 (2)

85.5 (2)

86 (2)

Efficiency (%)

80 (4)

81 (52)

82 (13)

83 (3)

Vent Type

Products that use combustion (burning) of fuel to create heat also create potentially dangerous gasses that need to be exhausted (AKA "Vented"). Depending on the product, venting can be done via a chimney, through a side wall, or use a second vent to provide fresh air to the appliance.

Chimney Vent (438)

Direct Vent (49)

Power Vent (79)

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 (412)

Steam (154)

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 (217)

Natural Gas (349)

Standard Efficiency Gas Boilers

Model: 381357908-SD

Model: 381357806

Model: 381357804

Model: 202PI-T2

Model: 381357802

Model: GWA-105-N-T-S2

Model: GWA-140-N-T-S2

Model: 381357832

Model: 381357808

Model: 381357864

Model: GSA-100-N-IP

Model: AWR280ENSZ2PSU

Model: 206NI-T2

Model: CG40ENIT

Model: GWA-105-L-T-S2

Model: GWA-210-N-T-S2

Model: GWA-245-N-T-S2

Model: GWA-052-N-T-S2

Model: GWA-070-L-T-S2

Model: GWA-070-N-T-S2

Model: AWR070ENSZ2PSU

Model: AWR210ENSZ2PSU

Model: KIN4LPI-LE2

Model: AWR245ENSZ2PSU

Standard Efficiency Gas Boiler