Weil-McLain

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Weil-McLain has been producing durable, American-made boilers for over a century. Their lineup of boilers spans a massive range of capacities and efficiencies with gas-fired and oil-fired options. Shop now for Weil-McLain.

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Accessories (3)

Board (1)

Indirect Water Heater (9)

Manifold Kit (4)

PCB Board (1)

Pump (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 - 159999 (126)

160000 - 289999 (64)

290000 - 419999 (12)

420000 - 549999 (5)

550000 - 679999 (2)

680000 - 809999 (4)

810000 - 939999 (2)

940000 - 1069999 (7)

1070000 - 1199999 (3)

1200000 - 1329999 (2)

1330000 - 1459999 (5)

1460000 - 1589999 (4)

1590000 - 1719999 (2)

1720000 - 1849999 (2)

1850000 - 1979999 (5)

1980000 - 2109999 (4)

2110000 - 2239999 (2)

2240000 - 2369999 (2)

2370000 - 2499999 (1)

2760000+ (1)

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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 - 169999 (163)

170000 - 319999 (39)

320000 - 469999 (5)

470000 - 619999 (4)

620000 - 769999 (5)

770000 - 919999 (7)

920000 - 1069999 (4)

1070000 - 1219999 (4)

1220000 - 1369999 (5)

1370000 - 1519999 (4)

1520000 - 1669999 (6)

1670000 - 1819999 (4)

1820000 - 1969999 (2)

1970000 - 2119999 (2)

2420000+ (1)

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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 - 229999 (148)

230000 - 429999 (28)

430000 - 629999 (7)

630000 - 829999 (6)

830000 - 1029999 (5)

1030000 - 1229999 (5)

1230000 - 1429999 (2)

1430000 - 1629999 (7)

1630000 - 1829999 (4)

1830000 - 2029999 (5)

2030000 - 2229999 (4)

2230000 - 2429999 (2)

2430000 - 2629999 (5)

2630000 - 2829999 (2)

2830000+ (3)

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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 (40)

82 (33)

83 (16)

84 (105)

85 (10)

86 (1)

87 (1)

91 (5)

92 (2)

93 (4)

94 (3)

95 (27)

96 (1)

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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 (198)

Direct Vent (60)

Power Vent (57)

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 (221)

Hot Water/Steam (9)

Steam (62)

Fuel Type

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

Indirect Fired (9)

Liquid Propane (74)

LP to NG (8)

Natural Gas (263)

NG to LP (18)

Oil (60)

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 (45)

Single Stage (210)

Weil-McLain CGi-6-PIN - 135K BTU - 84.0% AFUE - Hot Water Gas Boiler - Power Vent

Model: 381359008

Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 158k BTU Gross Input, 135k BTU DOE Capacity, 117k BTU Net IBR Capacity. Includes Circulator.

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$2,960.00

In-Stock

Free Shipping & Lift Gate

*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.

2% Check Discount

Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.

Weil-McLain CGa-3-PIDN - 56K BTU - 84.0% AFUE - Hot Water Gas Boiler - Chimney Vent

Model: 381359072

Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 67k BTU Gross Input, 56k BTU DOE Capacity, 49k BTU Net IBR Capacity. Includes Circulator.

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$1,915.00

In-Stock

Free Shipping & Lift Gate

2% Check Discount

Weil-McLain CGa-4-PIDL - 85K BTU - 84.0% AFUE - Hot Water Propane Boiler - Chimney Vent

Model: 381359088

Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 100k BTU Gross Input, 85k BTU DOE Capacity, 74k BTU Net IBR Capacity. Includes Circulator.

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$2,097.00

In-Stock

Free Shipping & Lift Gate

2% Check Discount

Weil-McLain CGa-8-PIDN - 198K BTU - 84.0% AFUE - Hot Water Gas Boiler - Chimney Vent

Model: 113081460

Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 233k BTU Gross Input, 198k BTU DOE Capacity, 172k BTU Net IBR Capacity. Includes Circulator.

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$3,139.99

Factory-Direct

Free Shipping & Lift Gate

2% Check Discount

Weil-McLain ECO® Tec 150-H - 139K BTU - 95% AFUE - Hot Water Gas Boiler - Direct Vent

Model: 383900155

Wall Mounted, Condensing Boiler with Modulating Gas Valve. Ships Packaged. Ratings: 150K BTU Gross Input, 139K BTU DOE Capacity, 121K BTU Net IBR Capacity. Includes Circulator.

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$3,117.00

Only 4 In-Stock

Free Shipping & Lift Gate

2% Check Discount

Weil-McLain AquaBalance™ AB-120-C - 112K BTU - 95% AFUE - Combi Gas Boiler - Direct Vent

Model: 383100040

Wall Mounted, Condensing Combi Boiler with Modulating Gas Valve. Ships Packaged. Ratings: 120K BTU Gross Input, 112K BTU DOE Capacity, 97K BTU Net IBR Capacity. Includes Circulator.

(13)

$2,200.00

Only 4 In-Stock

Free Shipping & Lift Gate

2% Check Discount

Weil-McLain Aqua Plus 105 - 110.9 Gal. - Indirect Water Heater

Model: 633600004

(8)

$2,705.00

Only 4 In-Stock

Free Shipping & Lift Gate

2% Check Discount

Weil-McLain GV90+6 - 161K BTU - 91.0% AFUE - Hot Water Gas Boiler - Direct Vent

Model: 382200613

Floor Mounted, Cast Iron Condensing Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 175K BTU Gross Input, 161K BTU DOE Capacity, 140K BTU Net IBR Capacity. Includes Circulator.

(7)

$4,508.00

Only 4 In-Stock

Free Shipping & Lift Gate

2% Check Discount

Weil-McLain GV90+5 - 130K BTU - 91.4% AFUE - Hot Water Gas Boiler - Direct Vent

Model: 382200612

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.

(6)

$3,987.00

Only 1 In-Stock

Free Shipping & Lift Gate

2% Check Discount

Weil-McLain Aqua Pro 55 - 55 Gal. - Indirect Water Heater

Model: 633500201

(5)

$1,779.00

Only 3 In-Stock

Free Shipping & Lift Gate

2% Check Discount

Weil-McLain Oil Burner for GO-5 - Beckett AFG - 1.45 GPH - Chimney Vent

Model: 386700404

(2)

$513.00

Only 1 In-Stock

Free Shipping

Weil-McLain Oil Burner for GO-7 - Beckett AFG - 2.0 GPH - Chimney Vent

Model: 386700412

(2)

$513.00

Factory-Direct

Free Shipping

Weil-McLain ECO 110 - 101K BTU - 95.0% AFUE - Hot Water Gas Boiler - Direct Vent

Model: 383800004

Wall Mounted, Condensing Boiler with Modulating Gas Valve. Ships Packaged. Ratings: 110K BTU Gross Input, 101K BTU DOE Capacity, 88K BTU Net IBR Capacity.

(2)

$2,849.00

In-Stock

Free Shipping & Lift Gate

2% Check Discount

Weil-McLain Ultra 105 - 94K BTU - 94% AFUE - Hot Water Gas Boiler - Direct Vent

Model: 383500734

Floor Mounted, Condensing Boiler with Modulating Gas Valve. Ships Packaged. Ratings: 105K BTU Gross Input, 94K BTU DOE Capacity, 81K BTU Net IBR Capacity. Includes Circulator.

(2)

$3,028.00

In-Stock

Free Shipping & Lift Gate

2% Check Discount

Weil-McLain Easy-Up - Manifold Kit - For AquaBalance™ Combi Boilers

Model: 383100060

(2)

$429.00

In-Stock

Free Shipping

Weil-McLain Ultra - Maintenance Kit

Model: 383500620

Weil-McLain - Maintenance Kit - For Weil-McLain Ultra 155, Ultra 230, Ultra 299, and Ultra 399 Hot Water Boilers - MPN: 383500620

(1)

$65.00

In-Stock

Weil-McLain Oil Burner for UO-3 - Beckett AFG - 1.0 GPH - Chimney Vent

Model: 521100030

(1)

$578.00

Factory-Direct

Free Shipping

Weil-McLain UO-3 - 123k BTU - 87% AFUE - Hot Water Oil Boiler - Chimney Vent - Burner Sold Separately

Model: 386901006

Floor mounted, Condensing Boiler with Modulating Gas Valve. Ships Packaged. Ratings: 123K BTU DOE Capacity, 107K BTU Net IBR Capacity. Includes Circulator.

(1)

$2,300.00

Factory-Direct

Free Shipping & Lift Gate

2% Check Discount

Weil-McLain Oil Burner for GO-9 - Beckett AFG - 2.55 GPH - Chimney Vent - With 2-Stage Pump

Model: 521100019

(1)

$600.11

Factory-Direct

Free Shipping

Weil-McLain EVG 110 - 101K BTU - 95% AFUE - Hot Water Gas Boiler - Direct Vent

Model: 383900005

Floor/Wall Mounted, Condensing Boiler with Modulating Gas Valve. Ships Packaged. Ratings: 110K BTU Gross Input, 101K BTU DOE Capacity, 88K BTU Net IBR Capacity. Includes Circulator.

(1)

$3,193.00

In-Stock

Free Shipping & Lift Gate

2% Check Discount