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Noritz (5)
Weil-McLain (96)
Bosch Thermotechnology (8)
Electro Industries (57)
Burnham (50)
Crown Boiler Co. (49)
ProSelect Force Boilers (3)
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Triangle Tube (5)
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Kit (1)
Manifold Kit (1)
Net I=B=R Capacity (BTU)
×
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.
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Enter Net I=B=R Capacity (BTU) Range Minimum Value
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Enter Net I=B=R Capacity (BTU) Range Maximum Value
20000 - 39999 (4)
40000 - 59999 (13)
60000 - 79999 (31)
80000 - 99999 (26)
100000 - 119999 (25)
120000 - 139999 (21)
140000 - 159999 (15)
160000 - 179999 (16)
180000 - 199999 (4)
200000 - 219999 (6)
220000 - 239999 (5)
240000 - 259999 (5)
260000 - 279999 (1)
300000 - 319999 (1)
320000 - 339999 (3)
340000+ (1)
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DOE Heating Capacity (BTU)
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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.
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Enter DOE Heating Capacity (BTU) Range Minimum Value
To
Enter DOE Heating Capacity (BTU) Range Maximum Value
30000 - 49999 (2)
50000 - 69999 (15)
70000 - 89999 (31)
90000 - 109999 (12)
110000 - 129999 (26)
130000 - 149999 (26)
150000 - 169999 (5)
170000 - 189999 (17)
190000 - 209999 (16)
210000 - 229999 (3)
230000 - 249999 (7)
250000 - 269999 (5)
270000 - 289999 (3)
290000 - 309999 (4)
350000 - 369999 (1)
370000 - 389999 (3)
450000 - 469999 (1)
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Maximum Input Capacity (BTU)
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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.
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30000 - 49999 (2)
50000 - 69999 (8)
70000 - 89999 (15)
90000 - 109999 (28)
110000 - 129999 (9)
130000 - 149999 (20)
150000 - 169999 (15)
170000 - 189999 (15)
190000 - 209999 (8)
210000 - 229999 (12)
230000 - 249999 (12)
250000 - 269999 (1)
270000 - 289999 (11)
290000 - 309999 (6)
310000 - 329999 (1)
330000 - 349999 (2)
350000 - 369999 (1)
390000 - 409999 (4)
590000 - 609999 (1)
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AFUE (%)
×
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
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81 - 82 (38)
83 - 84 (52)
85 - 86 (17)
87 - 88 (13)
91 - 92 (6)
93 - 94 (8)
95 - 96 (41)
Efficiency (%)
+
77 - 78 (1)
93 - 94 (1)
Vent Type
×
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.
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Chimney or Direct Vent (3)
Chimney Vent (161)
Direct Vent (63)
Power Vent (5)
Fuel Type
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Fuel Type
To create heat, some form of fuel is required. Fuel Type specifies what the product uses as an input to create heat.
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Electric (55)
Liquid Propane (37)
LP to NG (5)
Natural Gas (114)
NG to LP (9)
Oil (60)
Product Status
Available (319)
Discontinued (19)
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Weil-McLain Oil Burner for GO-3 - EZ-1 - 0.95 GPH - Chimney Vent
Model: 386700428
(2)
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$627.09
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Only 2 In-Stock
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Weil-McLain Oil Burner for GO-4 - Beckett AFG - 1.2 GPH - Chimney Vent
Model: 386700400
(2)
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$597.00
Free Shipping
In-Stock
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Weil-McLain Oil Burner for GO-5 - Beckett AFG - 1.45 GPH - Chimney Vent
Model: 386700404
(2)
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$597.00
Free Shipping
In-Stock
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Weil-McLain Oil Burner for GO-6 - Beckett AFG - 1.75 GPH - Chimney Vent
Model: 386700408
(2)
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$597.00
Free Shipping
Only 1 In-Stock
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Weil-McLain Oil Burner for GO-7 - Beckett AFG - 2.0 GPH - Chimney Vent
Model: 386700412
(2)
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$785.33
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Weil-McLain Oil Burner for GO-8 - Beckett AFG - 2.3 GPH - Chimney Vent
Model: 386700416
(2)
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$627.09
Free Shipping
Factory-Direct!
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Weil-McLain Oil Burner for GO-9 - Beckett AFG - 2.55 GPH - Chimney Vent
Model: 386700420
(2)
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$700.93
Free Shipping
Factory-Direct!
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Weil-McLain Ultra - Maintenance Kit
Model: 383500605
(2)
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$61.00
Free Shipping
In-Stock
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Weil-McLain WTGO - Tankless Water Heater Coil
Model: 590921612
(2)
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$294.00
Free Shipping
Only 2 In-Stock
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Weil-McLain NG to LP Conversion Kit CGa-25, CGa-3, CGa-4, CGa-5, Cga-6, SPDN Only
Model: 510-811-362
(2)
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$276.59
Free Shipping
Factory-Direct!
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Weil-McLain Williamson-Thermoflo Freestyle - NG to LP - Gas Conversion Kit - For FS-80, FS-80 COMBI and AB-80
Model: 640000024
(1)
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$137.00
Free Shipping
Only 1 In-Stock
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Burnham ALP210B - 194K BTU - 95.0% AFUE - Hot Water Gas Boiler - Direct Vent
Model: ALP210BW-4T02
(1)
Q&As
(2)
2% Check Discount
$5,713.00
Free Freight
Free Lift Gate
Factory-Direct!
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Burnham ALP285B - 262K BTU - 95.0% AFUE - Hot Water Gas Boiler - Direct Vent
Model: ALP285BF-4T07
(1)
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2% Check Discount
$7,900.00
Free Freight
Free Lift Gate
Factory-Direct!
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Burnham ALP399 - 377K BTU - 94.0% Thermal Efficiency - Hot Water Gas Boiler - Direct Vent
Model: ALP399BF-4L07
(1)
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2% Check Discount
$11,775.00
Free Freight
Free Lift Gate
Factory-Direct!
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Bosch Greenstar 79 - ZBR21 - 71K BTU - 95.0% AFUE - Hot Water Gas Boiler - Direct Vent
Model: ZBR21-3
(2)
Q&A
(1)
2% Check Discount
$2,624.00
Free Freight
Free Lift Gate
Factory-Direct!
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Weil-McLain Ultra 80 - 71K BTU - 93.5% AFUE - Hot Water Gas Boiler - Direct Vent
Model: 383500732
(2)
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2% Check Discount
$3,342.00
Free Freight
Free Lift Gate
Factory-Direct!
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Weil-McLain Ultra 80 - 71K BTU - 93.5% AFUE - Hot Water Propane Boiler - Direct Vent
Model: 383500733
(2)
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2% Check Discount
$3,458.00
Free Freight
Free Lift Gate
Factory-Direct!
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Weil-McLain Ultra 299 - 270 BTU - 92.5% AFUE - Hot Water Gas Boiler - Direct Vent
Model: 383500737
(2)
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2% Check Discount
$6,873.00
Free Freight
Free Lift Gate
Only 4 In-Stock
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Weil-McLain Ultra 399 - 364 BTU - 91.7% Thermal Efficiency - Hot Water Gas Boiler - Direct Vent
Model: 383500738
(2)
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2% Check Discount
$8,663.00
Free Freight
Free Lift Gate
In-Stock
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Weil-McLain AquaBalance™ - NG to LP - Gas Conversion Kit - For WMB-155/WMB-155C
Model: 640000083
(2)
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$99.00
Free Shipping
Factory-Direct!
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Weil-McLain EVG 155 - 143K BTU - 95.1% AFUE - Hot Water Gas Boiler - Direct Vent
Model: EVG 155
(2)
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2% Check Discount
$4,428.00
Free Freight
Free Lift Gate
In-Stock
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Crown Boiler Aruba 5 - 117K BTU - 84% AFUE - Hot Water Propane Boiler - Chimney Vent
Model: AWR140BLST3PSU
(2)
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2% Check Discount
$2,550.00
Free Freight
Free Lift Gate
Factory-Direct!
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Crown Boiler Aruba 5 - 205K BTU - 84% AFUE - Hot Water Propane Boiler - Chimney Vent
Model: AWR245BLST3PSU
(2)
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2% Check Discount
$3,600.00
Free Freight
Free Lift Gate
Factory-Direct!
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Weil-McLain CGa-5-PIDN - 113K BTU - 84.0% AFUE - Hot Water Gas Boiler - Chimney Vent
Model: 381359076
(2)
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2% Check Discount
$2,970.03
Free Freight
Free Lift Gate
In-Stock
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