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Weil-McLain High Efficiency Boilers

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1000 - 3999 (24)

4000 - 6999 (6)

7000 - 9999 (1)

10000 - 12999 (2)

19000 - 21999 (2)

25000 - 27999 (2)

28000 - 30999 (2)

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.

60000 - 179999 (24)

180000 - 299999 (5)

300000 - 419999 (2)

420000 - 539999 (1)

660000 - 779999 (1)

900000 - 1019999 (2)

1380000 - 1499999 (2)

1860000+ (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.

50000 - 159999 (24)

160000 - 269999 (5)

270000 - 379999 (2)

380000 - 489999 (1)

600000 - 709999 (1)

820000 - 929999 (2)

1150000 - 1259999 (2)

1590000+ (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.

70000 - 199999 (24)

200000 - 329999 (5)

330000 - 459999 (2)

460000 - 589999 (1)

720000 - 849999 (1)

980000 - 1109999 (2)

1500000 - 1629999 (2)

1890000+ (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

91 (1)

91.2 (1)

91.4 (1)

91.9 (1)

92.2 (1)

92.4 (1)

92.5 (2)

93.5 (2)

94 (3)

94.1 (1)

94.4 (1)

95 (8)

95.1 (3)

95.2 (3)

96.5 (1)

Efficiency (%)

91 (1)

93 (2)

95 (6)

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 (1)

Natural Gas (38)

Modulating/Staging

Stages are unique speeds or levels that equipment can operate at. More stages allow for better fine-tuned control of output, which improves comfort and efficiency. Modulating equipment can operate across a range of levels, giving the highest level of fine-tuned control. Learn More

Modulating (35)

Single Stage (4)

Ultra Low NOx Emissions

NOx is a byproduct of the combustion process, and it's output is regulated in some jurisdictions. Many regulators mirror SCAQMD rules, which regulate air quality for some parts of Southern California. Ultra Low NOx appliances emit less than 10-14 ng/J (nanogram per Joule) of NOx. Learn More

No (4)

Yes (32)

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GV90+ (4)

SlimFit (8)

Ultra (9)

WM97+ (3)

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Weil-McLain GV90+5 - 130K BTU - 91.4% AFUE - Hot Water Gas Boiler - Direct Vent Floor Mounted, Cast Iron Condensing Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 140K BTU Gross Input, 130K BTU DOE Capacity, 113K BTU Net IBR Capacity. Includes Circulator.