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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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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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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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Learn More About Buderus 7746900845acw-sale-badge
Buderus Cascade Module
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Buderus - 7746900845 - Cascade Module - MCM10 - For GB142 and GB162 Boilers
Item#: 37404
Model#: 7746900845
Brand: Buderus
$939.00
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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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Buderus Cascade Module
Learn More About AIC Alliance LA14-30acw-sale-badge
AIC Single Wall Flat Plate to Plate Heat Exchanger 7.6'' L x 3.1'' W
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AIC Flat Plate to Plate Heat Exchanger Single Wall, 7.6'' L x 3.1'' W
Item#: 44973
Model#: LA14-30
Brand: AIC Alliance
$247.00
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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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AIC Single Wall Flat Plate to Plate Heat Exchanger 7.6'' L x 3.1'' W
Learn More About WSD WSD 18X20acw-sale-badge
WSD 18H x 20L Water to Air Heat Exchanger 49,000-133,000 BTU
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WSD 18H x 20L Water to Air Heat Exchanger 49,000-133,000 BTU
Item#: 45155
Model#: WSD 18X20
Brand: WSD
$419.00
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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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WSD 18H x 20L Water to Air Heat Exchanger 49,000-133,000 BTU
Learn More About WSD WSD 20X20acw-sale-badge
WSD 20H x 20L Water to Air Heat Exchanger 50,000-145,000 BTU
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WSD 20H x 20L Water to Air Heat Exchanger 50,000-145,000 BTU
Item#: 45159
Model#: WSD 20X20
Brand: WSD
$463.00
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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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WSD 20H x 20L Water to Air Heat Exchanger 50,000-145,000 BTU
Learn More About Burnham 100850-01acw-sale-badge
Burnham Replacement Fan Blower
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Burnham - Replacement Fan Blower - For Burnham SCG and PVG Hot Water Boilers - MPN: 100850-01
Item#: 72088
Model#: 100850-01
Brand: Burnham
$417.00
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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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Burnham Replacement Fan Blower
Learn More About Caleffi 546366AMacw-sale-badge
Caleffi - DirtMag®PRO with Dual Magnets - 1" Press Connections
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Item#: 117432
Model#: 546366AM
Brand: Caleffi
$234.00
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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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Caleffi - DirtMag®PRO with Dual Magnets - 1" Press Connections
Learn More About Burnham 111745-01acw-sale-badge
Burnham Altitude Electrode - For LP Fueled ALTA, Phantom II and GHE II Boilers
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Item#: 150645
Model#: 111745-01
Brand: Burnham
$70.00
Free Lift Gate
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Free Lift Gate
*This product qualifies for Free Lift Gate Service. Items over 100lbs normally ship via semi-truck. Select this service if you need the product lowered to the ground curbside. To learn more about Lift Gate Service, read our shipping policy.
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Burnham Altitude Electrode - For LP Fueled ALTA, Phantom II and GHE II Boilers
Learn More About Triangle Tube PSRKIT50acw-sale-badge
Triangle Tube MCBA5 Control Module for Prestige Solo Boilers, Revision 5
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Triangle Tube MCBA5 Control Module for Prestige Solo Boilers, Revision 5
Item#: 23114
Model#: PSRKIT50
Brand: Triangle Tube
$545.00
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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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Triangle Tube MCBA5 Control Module for Prestige Solo Boilers, Revision 5
Learn More About Caleffi 551007ACacw-sale-badge
Caleffi Discal Air Separator with 1/2" Check Valve - 1-1/4" NPT Female Connections
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Caleffi Discal Air Separator with 1/2" Check Valve, 1-1/4" NPT Female Connections
Item#: 24530
Model#: 551007AC
Brand: Caleffi
$278.00
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Free Shipping
*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.
In-Stock
Caleffi Discal Air Separator with 1/2" Check Valve - 1-1/4" NPT Female Connections