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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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30000 - 49999 (2)
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310000 - 329999 (1)
370000+ (2)
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Net I=B=R Capacity (BTU)
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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.
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20000 - 39999 (6)
40000 - 59999 (11)
60000 - 79999 (21)
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220000 - 239999 (2)
260000 - 279999 (1)
320000 - 339999 (2)
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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.
30000 - 59999 (2)
60000 - 89999 (18)
90000 - 119999 (15)
120000 - 149999 (17)
150000 - 179999 (24)
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240000 - 269999 (13)
270000 - 299999 (14)
300000 - 329999 (2)
330000 - 359999 (1)
360000 - 389999 (1)
390000+ (2)
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AFUE (%)
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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.
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81 (3)
82 (23)
83 (1)
84 (63)
85 (15)
86 (4)
87 (6)
93 (1)
94 (2)
95 (14)
96 (2)
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Efficiency (%)
82 (3)
94 (1)
Vent Type
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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 (117)
Direct Vent (37)
Power Vent (4)
Medium
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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 (104)
Steam (34)
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.
Liquid Propane (41)
Natural Gas (95)
NG (2)
NG to LP (16)
Oil (19)
Modulating/Staging
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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.
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Modulating (20)
Single Stage (118)
Brand
Burnham (257)
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Alpine (17)
Aspen (19)
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IHC (2)
Independence (38)
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IQ (4)
K2 (7)
K2 Combi (4)
MegaSteam (6)
MPO-IQ (26)
Series 2 (25)
Series 3 (14)
X-2 (28)
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Burnham K2 - 112K BTU - 95% AFUE - Combi Gas Boiler - Direct Vent
Model: K2WTC-135B-6T00
Wall Mounted Condensing Combi Boiler with Modulating Gas Valve. Ships Packaged. Domestic Hot Water Priority. Includes Taco Circulator. Low Nox. Ratings: 120K BTU Gross Input, 112K BTU DOE Capacity, 97K BTU Net IBR Capacity.
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$2,299.00
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Burnham K2 - 169K BTU - 95% AFUE - Combi Gas Boiler - Direct Vent
Model: K2WTC-180B-6T02
Wall Mounted Condensing Combi Boiler with Modulating Gas Valve. Ships Packaged. Domestic Hot Water Priority. Includes Taco Circulator. Low Nox. Ratings: 180K BTU Gross Input, 169K BTU DOE Capacity, 147K BTU Net IBR Capacity.
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$2,794.00
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2% Check Discount
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Burnham IN5 - 86K BTU - 82.0% AFUE - Steam Gas Boiler - Chimney Vent - Packaged with Trim
Model: PIN5SNI-ME2
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 140K BTU Gross Input, 115K BTU DOE Capacity, 86K BTU Net IBR Capacity.
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$3,199.00
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2% Check Discount
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Burnham 3" - 45 Degree - Stainless Steel Elbow
Model: 8116292U
Burnham - 3" Vent Size - 45 Degree - Stainless Steel Elbow - For ALP080B, ALP105B, ALP150B, ALP210B, ESC3, ESC4, ESC5, ESC6, ESC7, PVG3, PVG4, PVG5, PVG6, PVG7, and Independence PV Boilers - MPN: 8116292U
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$67.00
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Burnham Independence - Natural Gas - Replacement Pilot Burner - Standing Pilot
Model: 8236022
Burnham - Natural Gas - Replacement Pilot Burner - Standing Pilot - Honeywell Q327A1006 - For Burnham IN10, IN11, and IN12 Steam Boilers - MPN: 8236022
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$36.00
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Burnham Alpine - Replacement Blower
Model: 105758-01
Burnham - Replacement Blower - For ALP210B Hot Water Boilers - MPN: 101529-01
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$789.00
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Burnham Aspen Light Commercial - 304K BTU - 95% AFUE - Hot Water Gas Boiler - Direct Vent
Model: ASPN-320
Wall/Floor Mounted Condensing Boiler with Modulating Gas Valve. Ships Packaged. Low Nox. Ratings: 320K BTU Gross Input, 304K BTU DOE Capacity, 264K BTU Net IBR Capacity.
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$6,999.00
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2% Check Discount
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Burnham NG to LP - Gas Conversion Kit - For 120-150K BTU K2WT Boilers
Model: 107874-01
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$59.00
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Burnham Auto Reset - Low Water Cut-Off Kit
Model: 104083-01
Burnham - Automatic Reset - Low Water Cut-Off Kit - Hydrolevel 1100-H6 - For Burnham Series 2 and PVG Hot Water Boilers - MPN: 104083-01
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$103.00
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Burnham Independence - Replacement Blocked Vent Switch Assembly
Model: 6016067
Burnham - Replacement Blocked Vent Switch Assembly - For Burnham IN3, IN4, IN5, IN6, IN7, IN8, and IN9 Steam Boilers - MPN: 6016067
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$16.00
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Burnham Series 2 - 87k BTU - 84% AFUE - Hot Water Gas Boiler - Chimney Vent
Model: 204EN-G0
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Included Grundfos Circulator and LWCO. Ratings: 103K BTU Gross Input, 87K BTU DOE Capacity, 76K BTU Net IBR Capacity.
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$2,100.00
In-Stock
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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
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Burnham IN6 - 108K BTU - 82.1% AFUE - Steam Gas Boiler - Chimney Vent - Packaged with Trim
Model: PIN6SNI-ME2
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 175K BTU Gross Input, 144K BTU DOE Capacity, 108K BTU Net IBR Capacity.
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$3,599.00
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2% Check Discount
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Burnham ES24 - 89K BTU - 85.0% AFUE - Hot Water Gas Boiler - Chimney Vent
Model: ES24BNI-T
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 105K BTU Gross Input, 89K BTU DOE Capacity, 77K BTU Net IBR Capacity. Includes Circulator.
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$2,303.00
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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
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Burnham 306 - 146K BTU - 84.0% AFUE - Hot Water Propane Boiler - Chimney Vent
Model: 306BPI-T
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 175K BTU Gross Input, 146K BTU DOE Capacity, 127K BTU Net IBR Capacity. Includes Circulator.
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$2,674.00
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2% Check Discount
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Burnham MPO-IQ115 - 101K BTU - 87.0% AFUE - Hot Water Oil Boiler - Chimney Vent
Model: MPO-IQ115-TB
Floor Mounted, Cast Iron Boiler. Ships Packaged. Ratings: 0.82 GPH Gross Input, 101K BTU DOE Capacity, 88K BTU Net IBR Capacity. Includes Circulator.
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$2,600.00
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2% Check Discount
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Burnham MPO-IQ189 - 167K BTU - 87.0% AFUE - Hot Water Oil Boiler - Chimney Vent
Model: MPO-IQ189-TB
Floor Mounted, Cast Iron Boiler. Ships Packaged. Ratings: 1.35 GPH Gross Input, 167K BTU DOE Capacity, 145K BTU Net IBR Capacity. Includes Circulator.
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$3,200.00
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2% Check Discount
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Burnham MPO-IQ231 - 203K BTU - 87.0% AFUE - Hot Water Oil Boiler - Chimney Vent
Model: MPO-IQ231-TB
Floor Mounted, Cast Iron Boiler. Ships Packaged. Ratings: 1.65 GPH Gross Input, 203K BTU DOE Capacity, 177K BTU Net IBR Capacity. Includes Circulator.
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$3,650.00
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Burnham MST396 - 95K BTU - 86.0% AFUE - Steam Oil Boiler - Chimney Vent
Model: MST396SL-HB
Floor Mounted, Cast Iron Boiler. Ships Packaged. Ratings: 1.05 GPH Gross Input, 127K BTU DOE Capacity, 95K BTU Net IBR Capacity.
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$3,010.00
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2% Check Discount
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Burnham NG to LP - Gas Conversion Kit - For 180K BTU K2WT Boilers
Model: 107875-01
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$59.00
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Burnham Natural Gas - Replacement Pilot Assembly - Intermittent Pilot (163423)
Model: 106125-01
Burnham - Natural Gas - Replacement Pilot Assembly - Intermittent Pilot - Honeywell Q3481B1206 - For Burnham Series 2, Independence, Independence PV, and PVG Boilers - MPN: 103704-01
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$65.00
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Burnham Independence - Steam - EZSMM Controls and Trim with Low Water Cut-Off
Model: 108526-01
Burnham - Steam - EZS Controls and Trim with Low Water Cut-Off - McDonnell & Miller 67 Float LWCO - For Knockdown & Semi-Pak Burnham Independence Steam Boilers - MPN: 60110023
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$493.00
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Burnham Outdoor Temperature Sensor - 10k Ohm Resistance
Model: 102946-01
Burnham - Outdoor Temperature Sensor - 10k Ohm Resistance - For ALP080B, ALP105B, ALP150B, ALP210B, ALP285B, ES2, and Series 3 Hot Water Boilers - MPN: 102946-01
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$33.00
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Burnham ESC4C - 78K BTU - 85.2% AFUE - Hot Water Gas Boiler - Direct Vent
Model: ESC4CNI-TS
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 91K BTU Gross Input, 90K BTU DOE Capacity, 68K BTU Net IBR Capacity. Includes Circulator.
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$2,459.00
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Burnham IN4PVNI - 65K BTU - 82.2% AFUE - Steam Gas Boiler - Power Vent - Packaged with Trim
Model: IN4PVNI-M2
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 105K BTU Gross Input, 87K BTU DOE Capacity, 65K BTU Net IBR Capacity.
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$2,962.00
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