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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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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 (12)
60000 - 79999 (30)
80000 - 99999 (24)
100000 - 119999 (25)
120000 - 139999 (21)
140000 - 159999 (15)
160000 - 179999 (16)
180000 - 199999 (4)
200000 - 219999 (6)
220000 - 239999 (5)
240000 - 259999 (3)
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 (14)
70000 - 89999 (30)
90000 - 109999 (12)
110000 - 129999 (24)
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 (2)
350000 - 369999 (1)
370000 - 389999 (3)
450000 - 469999 (1)
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Heating BTU
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1000 - 10999 (1133)
11000 - 20999 (30)
21000 - 30999 (10)
31000 - 40999 (30)
41000 - 50999 (13)
51000 - 60999 (20)
61000 - 70999 (10)
71000 - 80999 (15)
81000 - 90999 (2)
91000 - 100999 (10)
101000 - 110999 (1)
111000 - 120999 (2)
121000+ (3)
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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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10000 - 39999 (28)
40000 - 69999 (51)
70000 - 99999 (46)
100000 - 129999 (81)
130000 - 159999 (54)
160000 - 189999 (39)
190000 - 219999 (41)
220000 - 249999 (21)
250000 - 279999 (25)
280000 - 309999 (29)
310000 - 339999 (7)
340000 - 369999 (15)
370000 - 399999 (5)
400000 - 429999 (12)
490000 - 519999 (3)
580000 - 609999 (1)
610000 - 639999 (1)
940000 - 969999 (1)
1000000+ (1)
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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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58 - 60 (3)
64 - 66 (8)
67 - 69 (21)
70 - 72 (25)
73 - 75 (8)
76 - 78 (17)
79 - 81 (13)
82 - 84 (93)
85 - 87 (25)
91 - 93 (12)
94 - 96 (56)
97 - 99 (9)
Efficiency (%)
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77 - 78 (1)
93 - 94 (1)
Style
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Curved (14)
Panel (25)
Slab (1)
Slab Coil (2)
Straight (36)
Product Status
Available (1525)
Discontinued (1475)
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Burnham ALP210B - 194K BTU - 95.0% AFUE - Hot Water Gas Boiler - Direct Vent
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Burnham ALP285B - 262K BTU - 95.0% AFUE - Hot Water Gas Boiler - Direct Vent
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Burnham ALP399 - 377K BTU - 94.0% Thermal Efficiency - Hot Water Gas Boiler - Direct Vent
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Bosch Greenstar 79 - ZBR21 - 71K BTU - 95.0% AFUE - Hot Water Gas Boiler - Direct Vent
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Runtal UHX - 1,680 BTU - Hot Water Panel Radiator - 36" H - 11.5" W - 2" D
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Runtal UHX - 3,360 BTU - Hot Water Panel Radiator - 72" H - 11.5" W - 2" D
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Runtal UHX - 2,520 BTU - Hot Water Panel Radiator - 36" H - 17.2" W - 2" D
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Runtal UHX - 5,040 BTU - Hot Water Panel Radiator - 72" H - 17.2" W - 2" D
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Runtal Neptune - 2,228 BTU - Hydronic Towel Warmer - 33.1" H - 19.5" W - 4.2" D
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Runtal Neptune - 2,766 BTU - Hydronic Towel Warmer - 45.7" H - 19.5" W - 4.2" D
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Runtal Radia - 2,136 BTU - Hydronic Towel Warmer - 28.4" H - 23.6" W - 3.6" D
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Runtal Solea - 3,108 BTU - Hydronic Towel Warmer - 53.3" H - 19.7" W - 5.5" D
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Runtal Solea - 1,536 BTU - Electric Towel Warmer - 38.1" H - 19.7" W - 5.5" D - Direct Wire - Integrated Control
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Runtal Solea - 3,072 BTU - Electric Towel Warmer - 57.6" H - 19.7" W - 5.5" D - Direct Wire - Integrated Control
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Runtal Solea - 3,072 BTU - Electric Towel Warmer - 57.6" H - 19.7" W - 5.5" D - Plug-In - Integrated Control
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Model: 383500738
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Offer Ends Sunday, December 22
2% Check Discount
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