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Williams (83)
Caleffi (22)
Goodman (9)
Pensotti (73)
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Number of Zones
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Number of Zones
A zone is a room or area within a building that has its own temperature control.
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1 (1)
3 (1)
6 (1)
Type
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Adapter Kit (1)
Air Purger (1)
Air Vent (4)
Baseboard (414)
Blower (5)
Cable (2)
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Towel Warmer (583)
Vent Cap (4)
Vent Kit (1)
Venting Accessories (3)
Zone Control (2)
Zoning Circulator (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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Enter Net I=B=R Capacity (BTU) Range Minimum Value
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Enter Net I=B=R Capacity (BTU) Range Maximum Value
30000 - 49999 (2)
50000 - 69999 (10)
70000 - 89999 (20)
90000 - 109999 (18)
110000 - 129999 (14)
130000 - 149999 (6)
150000 - 169999 (7)
170000 - 189999 (7)
190000 - 209999 (1)
210000 - 229999 (2)
230000 - 249999 (3)
250000 - 269999 (1)
310000 - 329999 (1)
330000 - 349999 (2)
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DOE Heating Capacity (BTU)
×
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.
-
Enter DOE Heating Capacity (BTU) Range Minimum Value
To
Enter DOE Heating Capacity (BTU) Range Maximum Value
50000 - 69999 (5)
70000 - 89999 (16)
90000 - 109999 (11)
110000 - 129999 (15)
130000 - 149999 (17)
150000 - 169999 (3)
170000 - 189999 (8)
190000 - 209999 (7)
210000 - 229999 (1)
230000 - 249999 (2)
250000 - 269999 (2)
270000 - 289999 (3)
290000 - 309999 (1)
370000 - 389999 (2)
450000 - 469999 (1)
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Heating BTU
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1000 - 10999 (1262)
11000 - 20999 (32)
21000 - 30999 (17)
31000 - 40999 (33)
41000 - 50999 (16)
51000 - 60999 (29)
61000 - 70999 (12)
71000 - 80999 (10)
81000 - 90999 (8)
91000 - 100999 (11)
101000 - 110999 (2)
111000 - 120999 (2)
121000+ (5)
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Maximum Input Capacity (BTU)
×
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.
+
10000 - 39999 (11)
40000 - 69999 (11)
70000 - 99999 (10)
100000 - 129999 (31)
130000 - 159999 (22)
160000 - 189999 (12)
190000 - 219999 (14)
220000 - 249999 (5)
250000 - 279999 (5)
280000 - 309999 (8)
310000 - 339999 (2)
340000 - 369999 (2)
370000 - 399999 (2)
400000 - 429999 (4)
580000 - 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.
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+
58 - 60 (3)
64 - 66 (10)
67 - 69 (26)
70 - 72 (29)
73 - 75 (10)
76 - 78 (22)
79 - 81 (6)
82 - 84 (40)
85 - 87 (12)
91 - 93 (6)
94 - 96 (50)
97 - 99 (3)
Efficiency (%)
+
77 - 78 (1)
93 - 94 (1)
Product Status
Available (825)
Discontinued (1767)
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Pensotti DD - Double Panel Wall Radiator - 36" H x 24" W - 6,814 BTU
Model: DD36.24DBL
(11)
Q&As
(2)
$560.00
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Pensotti DD - Double Panel Wall Radiator - 36" H x 32" W - 9,083 BTU
Model: DD36.32DBL
(11)
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(2)
$616.00
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Free Lift Gate
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Williams Vent Starter Kit
Model: 9929
(12)
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$309.00
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Noritz NRCB180 - 92K BTU - 95% AFUE - Combi Gas Boiler - Direct Vent
Model: NRCB180DV-NG
(12)
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(1)
2% Check Discount
$2,866.00
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Williams Monterey - 35,000 BTU - Gas Fired Wall Furnace - NG - 66% AFUE - Single Sided
Model: 3509622A
(10)
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(1)
2% Check Discount
$1,003.00
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Noritz NRCB180 - 92K BTU - 95% AFUE - Combi Propane Boiler - Direct Vent
Model: NRCB180DV-LP
(10)
Ask a Question
2% Check Discount
$3,073.70
Free Freight
Free Lift Gate
Factory-Direct!
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Williams Monterey - 25,000 BTU - Gas Fired Wall Furnace - LP - 70% AFUE - Single Sided
Model: 2509621A
(9)
Ask a Question
$941.00
Free Freight
Free Lift Gate
In-Stock
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Williams Monterey - 35,000 BTU - Gas Fired Wall Furnace - LP - 66% AFUE - Single Sided
Model: 3509621A
(9)
Ask a Question
2% Check Discount
$1,003.00
Free Freight
Free Lift Gate
In-Stock
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Williams Monterey - 50,000 BTU - Gas Fired Wall Furnace - NG - 70% AFUE - Double Sided
Model: 5009622A
(9)
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2% Check Discount
$1,362.00
Free Freight
Free Lift Gate
In-Stock
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Goodman GCVC96 - 40k BTU - Two-Stage Gas Furnace - 96% AFUE
Model: GCVC960403BN
(8)
Q&A
(1)
2% Check Discount
$2,374.00
Add to Cartfor Price
Free Freight
Free Lift Gate
Only 1 In-Stock
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Modine HSB - 86,000 BTU - Hot Water/Steam Unit Heater - Horizontal - Copper Heat Exchanger - Top/Bottom Connections
Model: HSB86S01
(7)
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2% Check Discount
$1,142.00
Free Shipping
In-Stock
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Williams - 50K BTU - Room Heater - LP - 68% AFUE
Model: 5001521A
(8)
Ask a Question
2% Check Discount
$1,651.00
Free Freight
Free Lift Gate
Only 2 In-Stock
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Grundfos UPS - 1/2 HP - 3-Speed Circulation Pump - Cast Iron - GF 15/26 Flange
Model: 96402708
(6)
Q&A
(1)
2% Check Discount
$1,428.00
Free Shipping
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Grundfos UPS - 3/4 HP - 3-Speed Circulation Pump - Cast Iron - GF 40/43 Flange
Model: 96402730
(6)
Q&A
(1)
2% Check Discount
$1,944.00
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Grundfos UPS - 3/4 HP - 3-Speed Circulation Pump - Cast Iron - GF 40/43 Flange
Model: 96402762
(6)
Q&A
(1)
2% Check Discount
$1,951.00
Free Shipping
Only 2 In-Stock
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Grundfos UPS - 3/4 HP - 3-Speed Circulation Pump - Cast Iron - GF 40/43 Flange
Model: 96402782
(6)
Q&A
(1)
2% Check Discount
$2,450.00
Free Shipping
Only 1 In-Stock
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Runtal EB3 - 1,500 BTU - Electric Baseboard Radiator - 10.125" H - 36" W - 2.25" D - Direct Wire
Model: EB3-36-120D-9010R
(6)
Q&A
(1)
$821.00
Free Shipping
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Runtal EB3 - 1,500 BTU - Electric Baseboard Radiator - 10.125" H - 36" W - 2.25" D - Direct Wire
Model: EB3-36-240D-9010R
(6)
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(1)
$821.00
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Runtal EB3 - 2,000 BTU - Electric Baseboard Radiator - 10.125" H - 48" W - 2.25" D - Direct Wire
Model: EB3-48-120D-9010R
(6)
Q&A
(1)
$864.00
Free Shipping
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Runtal EB3 - 2,000 BTU - Electric Baseboard Radiator - 10.125" H - 48" W - 2.25" D - Direct Wire
Model: EB3-48-208D-9010R
(6)
Q&As
(2)
$864.00
Free Shipping
Factory-Direct!
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Runtal EB3 - 2,000 BTU - Electric Baseboard Radiator - 10.125" H - 48" W - 2.25" D - Direct Wire
Model: EB3-48-240D-9010R
(6)
Q&A
(1)
$864.00
Free Shipping
Factory-Direct!
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Runtal EB3 - 2,500 BTU - Electric Baseboard Radiator - 10.125" H - 60" W - 2.25" D - Direct Wire
Model: EB3-60-120D-9010R
(6)
Q&A
(1)
$926.00
Free Shipping
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Runtal EB3 - 2,500 BTU - Electric Baseboard Radiator - 10.125" H - 60" W - 2.25" D - Direct Wire
Model: EB3-60-208D-9010R
(6)
Q&A
(1)
$926.00
Free Shipping
Factory-Direct!
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Runtal EB3 - 2,500 BTU - Electric Baseboard Radiator - 10.125" H - 60" W - 2.25" D - Direct Wire
Model: EB3-60-240D-9010R
(6)
Q&A
(1)
$926.00
Free Shipping
Factory-Direct!
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