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Number of Zones Learn More
Number of Zones
A zone is a room or area within a building that has its own temperature control.
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Type
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DOE Heating Capacity (BTU) Learn More
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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Net I=B=R Capacity (BTU) Learn More
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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Heating BTU
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Cooling BTU
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Capacity (Tons) Learn More
Capacity (Tons)
Tonnage, or tons of cooling, is a short hand method for describing the capacity of cooling equipment. One ton is equal to approximately 12 kBTU/hr.
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Maximum Number of Zones
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Maximum Input Capacity (BTU) Learn More
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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AFUE (%) Learn More
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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Efficiency (%)
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Style
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Casing
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Refrigerant Type
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Buderus - 7750103609 - 6,104 BTU - Hydronic Panel Radiator - 24" Height x 36" Width x 4" Depth
Item#: 79637
Model#: 7750103609
Brand: Buderus
$507.00
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Buderus - 7750102309 - 4,070 BTU - Hydronic Panel Radiator - 20" Height x 36" Width x 2.5" Depth
Item#: 79647
Model#: 7750102309
Brand: Buderus
$413.00
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$1,148.00
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$609.00
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Wall Mounted, Condensing Combi Boiler with Modulating Gas Valve. Ships Packaged. Ratings: 155K BTU Gross Input, 144K BTU DOE Capacity, 125K BTU Net IBR Capacity. Includes Circulator.
Item#: 94361
Model#: 383100050
Brand: Weil-McLain
$2,675.00
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$600.00
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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.
Item#: 102567
Model#: 204EN-G0
Brand: Burnham
$3,061.00
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*This product qualifies for Free Shipping 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 map apply, see our full shipping policy for more details.
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Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Included Taco Circulator and LWCO. Ratings: 103K BTU Gross Input, 87K BTU DOE Capacity, 76K BTU Net IBR Capacity.
Item#: 102568
Model#: 204EN-T0
Brand: Burnham
$3,061.00
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Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Included Grundfos Circulator and LWCO. Ratings: 172K BTU Gross Input, 145K BTU DOE Capacity, 126K BTU Net IBR Capacity.
Item#: 102571
Model#: 206EN-G0
Brand: Burnham
$3,934.00
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$681.00
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$213.31
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High Efficiency Upflow/Horizontal Blower with 1200 Max CFM. Natural Gas with Low NOx Emissions. 14 Cabinet Width.
Item#: 117112
Model#: GM9S960403AN
Brand: Goodman
Originally $1,535.00
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High Efficiency Upflow/Horizontal Blower with 1200 Max CFM. Natural Gas with Low NOx Emissions. 17.5 Cabinet Width.
Item#: 117613
Model#: GM9C960603BN
Brand: Goodman
Originally $1,771.00
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$1,912.50
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Modine - PTP250AS0121 - 250,000 BTU - Gas Fired Unit Heater - Single-Stage Natural Gas Burner* - 82% Thermal Efficiency - Power Vented - Aluminized Steel Heat Exchanger - Propeller Driven - 115V/60Hz/1 Phase*
Item#: 152242
Model#: PTP250AS0111
Brand: Modine
$1,970.00
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Reznor - UDXC-125 - 120,000 BTU - Gas Fired Unit Heater - Power Vented - Natural Gas - Aluminized Heat Exchanger - 1,537 CFM - 115V
Item#: 157236
Model#: UDXC-125
Brand: Reznor
Sale: $1,552.00
On Sale Through 04/30
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Reznor - UDXC-175 - 175,000 BTU - Gas Fired Unit Heater - Power Vented - Natural Gas - Aluminized Heat Exchanger - 2,242 CFM - 115V
Item#: 157238
Model#: UDXC-175
Brand: Reznor
Sale: $1,859.00
On Sale Through 04/30
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