Bosch Greenstar Combi 151P - 134K BTU - 95.0% AFUE - Combi Gas Boiler - Direct Vent

Model: ZWB42-3A Item Number: 37395
Bosch Thermotechnology ZWB42-3A
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Bosch Thermotechnology ZWB42-3A
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Bosch Greenstar Combi 151P - 134K BTU - 95.0% AFUE - Combi Gas Boiler - Direct Vent
Bosch Greenstar Combi 151P - 134K BTU - 95.0% AFUE - Combi Gas Boiler - Direct Vent Model: ZWB42-3A Item Number: 37395
$3,851.00
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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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*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.
Specification Highlights
    Condition
    New Learn More
    New
    This product is new and has never been used. It's in its original packaging, which has not been opened.
    Weight
    110.2 Pounds Learn More
    110.2 Pounds
    Total weight of the product and any included accessory/components. This total is not the shipping weight, as it does not include packing material, which may increase the overall shipping weight of this product.
    Product Category
    Boiler
Capacity (BTU/h)
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Features

Overview for Bosch Thermotechnology ZWB42-3A

The Bosch greenstar boiler represents today's best efficiency technologies brought together in a single package. Astounding efficiency ratings can be achieved with the use of Bosch's condensing technology, squeezing every last BTU out of your home's gas supply. An included 3-speed Grundfos pump and a wide variety of pipe venting options allow the boiler to be installed in nearly any home imaginable. This boiler includes a domestic hot water coil, allowing the boiler to act as a tankless hot water heater as well as a hydronic boiler.
  • Condensing Technology Improves Efficiency
  • The ZWB42-3A is a condensing boiler, using the leftover energy in the boiler's flue exhaust to further heat your home. Keep your home warmer for less energy cost!
  • Fully Modulating Fan
  • The boiler includes a fully modulating fan to control the boiler's burning rate, allowing optimum efficiency to be achieved during a wide variety of outdoor conditions.
  • Small Size and Low Installation Clearances
  • Low installation clearances on all sides, wall mounting configuration, and small footprint translate into a boiler that can be installed almost anywhere.
  • Product Note
    Please note the ZWB42-3A does not include an expansion tank or controller.
    Specifications
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    Specifications

    Overview
    Product Category
    Boiler
    General Information
    Product Line
    Greenstar
    Product Category
    Boiler
    Medium Learn More
    Medium
    Medium refers to the substance that carries heat through the heating system. Systems are either designed to use either Hot Water or Steam as a medium, and components are usually specific to one or the other.
    Hot Water
    Fuel Type Learn More
    Fuel Type
    To create heat, some form of fuel is required. Fuel Type specifies what the product uses as an input to create heat.
    Natural Gas
    Combustion Type Learn More
    Combustion Type
    Condensing appliances use leftover thermal energy from combustion gases to heat water in a secondary heat exchanger, resulting in higher efficiency and lower exhaust temperature.
    Condensing
    Vent Type Learn More
    Vent Type
    Products that use combustion (burning) of fuel to create heat also create potentially dangerous gasses that need to be exhausted (AKA "Vented"). Depending on the product, venting can be done via a chimney, through a side wall, or use a second vent to provide fresh air to the appliance.
    Direct Vent
    DHW Production Learn More
    DHW Production
    DHW (Domestic Hot Water) is potable water for uses other than space heat. Some boilers are able to provide DHW "out of the box", while others can do so with the purchase of optional accessories.
    Yes
    Modulating/Staging Learn More
    Modulating/Staging
    Stages are unique speeds or levels that equipment can operate at. More stages allow for better fine-tuned control of output, which improves comfort and efficiency. Modulating equipment can operate across a range of levels, giving the highest level of fine-tuned control.
    Modulating
    Mount Type
    Wall
    Minimum Altitude
    0 Feet
    Maximum Altitude
    4500 Feet
    Assembly Type
    Packaged
    Includes Pump
    Yes
    Gas Conversion Kit
    Included
    Performance
    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.
    95 %
    Maximum Input Capacity Learn More
    Maximum Input Capacity
    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.
    151600 BTU
    Minimum Input Capacity
    36000 BTU
    DOE Heating Capacity Learn More
    DOE Heating Capacity
    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.
    134400 BTU
    Net I=B=R Capacity Learn More
    Net I=B=R Capacity
    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.
    117000 BTU
    Ultra Low NOx Emissions Learn More
    Ultra Low NOx Emissions
    NOx is a byproduct of the combustion process, and it's output is regulated in some jurisdictions. Many regulators mirror SCAQMD rules, which regulate air quality for some parts of Southern California. Ultra Low NOx appliances emit less than 10-14 ng/J (nanogram per Joule) of NOx.
    Yes
    Turndown Ratio
    5:1
    Electrical Data
    Phase
    1
    Frequency
    60 Hz
    Dimensions
    Gas Connection Size
    3/4 Inch
    Flue Connection Size
    3 Inches
    Cold Water Inlet
    3/4 Inch
    Hot Water Outlet
    3/4 Inch
    Supply Connection
    1 Inch
    Return Connection
    1 Inch
    Product Height
    33 1/2 Inches
    Product Width
    17 19/48 Inches
    Product Depth
    13 43/48 Inches
    Product Weight
    110.2 Pounds
    Shipping Weight
    118 Pounds
    Certifications
    Country of Origin
    United States
    CSA Listed
    Yes
    ASME Certified
    Yes
    AHRI Certified
    Yes
    Warranty Information
    Parts Warranty Show ACW Parts Warranty Learn More
    Parts Warranty
    A warranty is a safeguard from defects in manufacturing and can vary in length and terms. Some manufacturers require registration for extended warranty benefits, be sure to check out features and the warranty document. To see the manufacturer's warranty statement, click on the Manuals tab. Learn More
    5 Years
    Heat Exchanger Warranty
    Limited Lifetime Years
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    Reviews

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    Manuals
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    Bosch Greenstar Combi 151P - 134K BTU - 95.0% AFUE - Combi Gas Boiler - Direct Vent
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