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Williams (87)
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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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Weil-McLain CGi-4-PIL - 77K BTU - 84.0% AFUE - Hot Water Propane Boiler - Power Vent
Model: 381359018
(1)
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2% Check Discount
$3,595.00
Free Freight
Free Lift Gate
In-Stock
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Electro Industries EZB-ECO® - Two Stage - 5 kW - 17,000 BTU - Modulating Electric Hot Water Boiler - 208/240 Volt
Model: EZB-T1-05-240-1
(1)
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2% Check Discount
$3,798.00
Free Freight
Free Lift Gate
Factory-Direct!
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ProSelect® Force™ Boilers - 107k BTU - 82.1% AFUE - Steam Gas Boiler - Chimney Vent
Model: FORCESTEAM06NH
(1)
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2% Check Discount
$3,756.00
Free Freight
Free Lift Gate
In-Stock
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Weil-McLain - Easy-Up Manifold Kit For Eco-Tec Boilers 80-199
Model: 383-700-343
(1)
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$356.00
Free Shipping
In-Stock
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Reznor UDX Power Vented Gas Fired Unit Heater, Low Static Axial Fan, NG, Aluminized Heat Exchanger - 200,000 BTU
Model: UDX-200
(1)
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2% Check Discount
$1,871.40
Free Freight
Free Lift Gate
Factory-Direct!
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Goodman GM9S80 - 80k BTU - Gas Furnace - 80% AFUE
Model: GM9S800803BN
(1)
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$1,035.00
Add to Cartfor Price
Free Freight
Free Lift Gate
In-Stock
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Goodman GM9S80 - 80k BTU - Gas Furnace - 80% AFUE
Model: GM9S800804BN
(1)
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2% Check Discount
$1,092.00
Add to Cartfor Price
Free Freight
Free Lift Gate
In-Stock
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Goodman GM9C96 - 40k BTU - Gas Furnace - 96% AFUE
Model: GM9C960403AN
(1)
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2% Check Discount
$1,558.00
Add to Cartfor Price
Free Freight
Free Lift Gate
In-Stock
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Goodman GM9C96 - 60k BTU - Gas Furnace - 96% AFUE
Model: GM9C960603AN
(1)
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2% Check Discount
$1,624.00
Add to Cartfor Price
Free Freight
Free Lift Gate
In-Stock
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Goodman GM9C96 - 60k BTU - Gas Furnace - 96% AFUE
Model: GM9C960603BN
(1)
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2% Check Discount
$1,674.00
Add to Cartfor Price
Free Freight
Free Lift Gate
In-Stock
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Electro Industries EMB Mini-Boiler™ - 9 kW - 30.7K BTU - Hot Water Electric Boiler - 240V - 1 Phase - Staging
Model: EMB-R1-09-240-1
(1)
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2% Check Discount
$1,624.00
Free Shipping
Factory-Direct!
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Runtal Radiator Valve Set - 1/2" NPT - Straight - Shut-Off - Chrome Plated
Model: VALVE-PC SET
(1)
Ask a Question
$103.00
Free Shipping
Backordered
Estimated Ship Date December 27on new orders
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Runtal Vertical Pipe Cover - 10"
Model: PC-10-9010R
(1)
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$24.00
Free Shipping
Backordered
Estimated Ship Date December 27on new orders
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Runtal Neptune - 1,536 BTU - Electric Towel Warmer - 37.4" H - 19.5" W - 4.2" D - Direct Wire - Integrated Control
Model: NTRED-3320-9010R
(1)
Ask a Question
2% Check Discount
$1,482.00
Free Shipping
Backordered
Estimated Ship Date January 03on new orders
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Williams Direct-Vent - 30,000 BTU - Gas Direct-Vent Wall Furnace - LP - 66% AFUE - Up To 2,000 Ft Altitude
Model: 3003821
(26)
Q&As
(2)
Offer Ends Tuesday, December 31
2% Check Discount
$1,341.00
$1,273.95
Free Freight
Free Lift Gate
In-Stock
View Details
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Williams Direct-Vent - 30K BTU - Gas Direct-Vent Wall Furnace - NG - 66% AFUE - Up To 2,000 Ft Altitude
Model: 3003822
(25)
Q&As
(2)
Offer Ends Tuesday, December 31
2% Check Discount
$1,341.00
$1,273.95
Free Freight
Free Lift Gate
In-Stock
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Williams Forsaire - 65k BTU - Gas Top-Vent Wall Furnace - 76% AFUE - Standing Pilot
Model: 6508632
(16)
Ask a Question
Offer Ends Tuesday, December 31
2% Check Discount
$2,321.00
$2,204.95
Free Freight
Free Lift Gate
In-Stock
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Williams Direct-Vent - 22K BTU - Gas Direct-Vent Wall Furnace - LP - 67% AFUE - Up To 2,000 Ft Altitude
Model: 2203821
(15)
Q&A
(1)
Offer Ends Tuesday, December 31
2% Check Discount
$1,258.00
$1,195.10
Free Freight
Free Lift Gate
Only 2 In-Stock
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Williams Direct-Vent - 14K BTU - Gas Direct-Vent Wall Furnace - NG - 65% AFUE - Up To 2,000 Ft Altitude
Model: 1403822
(15)
Q&A
(1)
Offer Ends Tuesday, December 31
$1,047.00
$994.65
Free Freight
Free Lift Gate
Backordered
Estimated Ship Date January 27on new orders
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Pensotti DD - Double Panel Wall Radiator - 20" H x 20" W - 3,593 BTU
Model: DD20.20DBL
(12)
Q&As
(2)
$405.00
Free Shipping
Factory-Direct!
View Details
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Noritz NRCB199 - 111K BTU - 95% AFUE - Combi Propane Boiler - Direct Vent
Model: NRCB199DV-LP
(11)
Ask a Question
2% Check Discount
$2,757.59
Free Freight
Free Lift Gate
Factory-Direct!
View Details
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Williams - 50K BTU - Room Heater - LP - 68% AFUE - With Blower
Model: 5001921A
(12)
Ask a Question
Offer Ends Tuesday, December 31
2% Check Discount
$1,736.00
$1,649.20
Free Freight
Free Lift Gate
Only 3 In-Stock
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Williams - Automatic Blower - 150 CFM - 120V
Model: 2102
(11)
Ask a Question
$457.00
Free Shipping
In-Stock
View Details
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Williams Monterey - 25,000 BTU - Gas Fired Wall Furnace - NG - 70% AFUE - Single Sided
Model: 2509622A
(8)
Ask a Question
Offer Ends Tuesday, December 31
$883.00
$838.85
Free Freight
Free Lift Gate
Only 5 In-Stock
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