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Williams (83)
Caleffi (22)
Goodman (9)
Pensotti (73)
Ecostyle (38)
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Weil-McLain (28)
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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)
Ceiling Unit Heater (1)
Circulator (16)
Clamp (1)
Connection Adapter (1)
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Deflector (6)
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Electric Wall Furnace (6)
Gas Conversion Kit (3)
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Panel (285)
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Smoke and CO Alarm (1)
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Temperature Gauge (1)
Thermostat (1)
Towel Warmer (583)
Vent Cap (3)
Vent Kit (1)
Venting Accessories (3)
Zone Control (1)
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 (19)
90000 - 109999 (18)
110000 - 129999 (13)
130000 - 149999 (5)
150000 - 169999 (7)
170000 - 189999 (7)
190000 - 209999 (1)
210000 - 229999 (2)
230000 - 249999 (2)
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 (15)
90000 - 109999 (11)
110000 - 129999 (15)
130000 - 149999 (16)
150000 - 169999 (2)
170000 - 189999 (8)
190000 - 209999 (7)
210000 - 229999 (1)
230000 - 249999 (2)
250000 - 269999 (2)
270000 - 289999 (2)
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 (10)
40000 - 69999 (13)
70000 - 99999 (10)
100000 - 129999 (27)
130000 - 159999 (23)
160000 - 189999 (10)
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.
Learn More
+
58 - 60 (3)
64 - 66 (10)
67 - 69 (26)
70 - 72 (29)
73 - 75 (10)
76 - 78 (22)
79 - 81 (6)
82 - 84 (38)
85 - 87 (12)
91 - 93 (4)
94 - 96 (50)
97 - 99 (3)
Efficiency (%)
+
77 - 78 (1)
93 - 94 (1)
Product Status
Available (819)
Discontinued (1767)
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Runtal Omnipanel - 3,000 BTU - Hydronic Towel Warmer - 26.1" H - 30" W - 3.8" D
Model: TW9-30-9010R
(7)
Q&As
(3)
$861.00
Free Shipping
Factory-Direct!
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Runtal Omnipanel - 3,520 BTU - Hydronic Towel Warmer - 61.1" H - 16" W - 3.8" D
Model: TW21-16-9010R
(7)
Q&As
(3)
2% Check Discount
$1,346.00
Free Freight
Free Lift Gate
Backordered
Estimated Ship Date June 22on new orders
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Grundfos UPS - 1/6 HP - 3-Speed Circulation Pump - Bronze - GF 40/43 Flange - Check Valve
Model: 52722520
(7)
Q&A
(1)
$907.00
Free Shipping
Factory-Direct!
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Grundfos UPS - 1/6 HP - Single-Speed Circulation Pump - Bronze - GF 40/43 Flange
Model: 52722370
(7)
Ask a Question
$551.00
Free Shipping
In-Stock
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Bosch Greenstar Combi 151P - 134K BTU - 95.0% AFUE - Combi Gas Boiler - Direct Vent
Model: ZWB42-3
(6)
Q&As
(2)
2% Check Discount
$3,785.00
Free Freight
Free Lift Gate
Factory-Direct!
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Grundfos UPS - 1/3 HP - 3-Speed Circulation Pump - Cast Iron - GF 40/43 Flange
Model: 95906636
(6)
Q&A
(1)
$511.00
Free Shipping
In-Stock
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Grundfos UPS - 1/2 HP - 3-Speed Circulation Pump - Stainless Steel - GF 40/43 Flange
Model: 95906638
(6)
Q&A
(1)
$796.00
Free Shipping
In-Stock
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Grundfos UPS - 1/6 HP - 3-Speed Circulation Pump - Cast Iron - GF 15/26 Flange - Check Valve
Model: 52722513
(6)
Q&A
(1)
$508.00
Free Shipping
In-Stock
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Grundfos UPS - 1/6 HP - 3-Speed Circulation Pump - Cast Iron - GF 40/43 Flange - Check Valve
Model: 52722514
(6)
Q&A
(1)
$620.00
Free Shipping
In-Stock
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Grundfos UPS - 1/6 HP - 3-Speed Circulation Pump - Cast Iron - GF 15/26 Flange - Check Valve
Model: 52722512
(5)
Q&A
(1)
$464.00
Free Shipping
In-Stock
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Burnham IN4 - 65K BTU - 82.0% AFUE - Steam Gas Boiler - Chimney Vent - Packaged with Trim
Model: PIN4SNI-ME2
(5)
Q&A
(1)
2% Check Discount
$4,103.00
Free Freight
Free Lift Gate
Factory-Direct!
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Modine Hot Dawg HD - 75,000 BTU - Unit Heater - LP - 80% Thermal Efficiency - Power Vented - Aluminized Steel Heat Exchanger
Model: HD75AS0121
(51)
Q&As
(3)
2% Check Discount
$1,247.00
Free Freight
Free Lift Gate
In-Stock
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Modine Hot Dawg HD - 75,000 BTU - Unit Heater - NG - 80% Thermal Efficiency - Power Vented - Aluminized Steel Heat Exchanger
Model: HD75AS0111
(45)
Q&As
(3)
2% Check Discount
$1,247.00
Free Freight
Free Lift Gate
In-Stock
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Ecostyle - 4,551 BTU - Hot Water Panel Radiator - 24"H x 24"W - White
Model: B-24.24 ECO
(43)
Q&As
(8)
$419.00
Free Shipping
Factory-Direct!
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Modine Hot Dawg HD - 100,000 BTU - Unit Heater - LP - 80% Thermal Efficiency - Power Vented - Aluminized Steel Heat Exchanger
Model: HD100AS0121
(42)
Q&As
(3)
2% Check Discount
$1,444.00
Free Freight
Free Lift Gate
In-Stock
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Modine PDP - 200,000 BTU - Unit Heater - NG - 83% Thermal Efficiency - Power Vented - Aluminized Steel Heat Exchanger - Propeller
Model: PDP200AE0130
(42)
Q&As
(2)
2% Check Discount
$2,154.00
Free Freight
Free Lift Gate
In-Stock
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Ecostyle - 2,610 BTU - Hot Water Panel Radiator - 20"H x 16"W - White
Model: B-20.16 ECO
(40)
Q&As
(8)
$314.00
Free Shipping
Factory-Direct!
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Ecostyle - 3,916 BTU - Hot Water Panel Radiator - 20"H x 24"W - White
Model: B-20.24 ECO
(40)
Q&As
(8)
$367.00
Free Shipping
Factory-Direct!
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Ecostyle - 3,037 BTU - Hot Water Panel Radiator - 24"H x 16"W - White
Model: B-24.16 ECO
(40)
Q&As
(8)
$356.00
Free Shipping
Factory-Direct!
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Ecostyle - 6,069 BTU - Hot Water Panel Radiator - 24"H x 32"W - White
Model: B-24.32 ECO
(40)
Q&As
(8)
$484.00
Free Freight
Factory-Direct!
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Ecostyle - 2,562 BTU - Hot Water Panel Radiator - 12"H x 24"W - White
Model: B-12.24 ECO
(39)
Q&As
(8)
$305.00
Free Shipping
Factory-Direct!
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Ecostyle - 4,266 BTU - Hot Water Panel Radiator - 12"H x 40"W - White
Model: B-12.40 ECO
(39)
Q&As
(8)
$382.00
Free Shipping
Factory-Direct!
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Ecostyle - 3,254 BTU - Hot Water Panel Radiator - 16"H x 24"W - White
Model: B-16.24 ECO
(39)
Q&As
(8)
$344.00
Free Shipping
Factory-Direct!
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Ecostyle - 2,167 BTU - Hot Water Panel Radiator - 16"H x 16"W - White
Model: B-16.16 ECO
(39)
Q&As
(8)
$294.00
Free Shipping
Factory-Direct!
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