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Aquastar Tankless Water Heaters

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Customers who have purchased water heaters have also been:
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Aquastar (by Bosch) is a leader in the tankless water heater industry.
If you are replacing your existing water heater, why not go tankless?

The Aquastar's (by Bosch) flow-through, tankless design means that your water is heated instantly, but only for as long as you need the hot water; unlike tank water heaters, which have to constantly maintain a desired hot water temperature whether or not you are using it. This translates directly into energy and cost savings. Also, the Aquastar's compact design saves space and makes it a one-person installation job.

All water components are made of solid copper, and the heaters are constructed from stainless steel and aluminum. There is virtually no mineral buildup since the unit does not store water. These models have some of the highest efficiency rating and best energy factors on the market.

Bosch (Aquastar) On-demand Water Heaters:

Bosch AquaStar 1000P Tankless Water Heater
Tankless 1000P Features:

This small gas tankless water heater is ideal for cottages, camps, and other specific applications where a small volume of hot water is desired. Its compact size means you save valuable floor space and is available in both natural gas (NG) and liquid propane (LP).

  • H 28-8/9" x W 12-1/5"" x D 8-1/2"
  • Standing pilot ignition
  • 78% average efficiency
  • Compact and lightweight
  • Modulating gas valve to control temperature
  • Pressure relief valve included
  • Specifications:

    Power Input NG: 30,735 - 74,900 Btu
    LP: 30,735 - 74,900 Btu
    Minimum Flow Rate 0.5 gpm
    Rate to Activate
    Flow Rates
    90°F rise / 1.3 gpm
    75°F rise / 1.5 gpm
    65°F rise / 1.7 gpm
    55°F rise / 2.1 gpm
    45°F rise / 2.6 gpm
    Energy Factor NG: 0.64
    LP: 64
    Thermal Efficiency NG: 78%
    LP: 78%
    Dimensions H 28-8/9" x W 12-1/5" x D 8-1/2"
    Weight 25 lbs.
    Ignition Standing Pilot
    Modulating Gas Valve Yes
    Vent Size 4"
    Note: A pressure relief valve is included with this Tankless water heaters.
    Model # Description Price & Questions
    1000P-NG AquaStar 1000P Tankless Water Heater - Natural Gas $387.50
    1000P-LP AquaStar 1000P Tankless Water Heater - Liquid Propane Gas $386.11

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    Bosch AquaStar 1600P Tankless Water Heater
    Tankless 1600P Features:

    This popular tankless water heaters offers great efficiency and excellent performance. Available in both natural gas and liquid propane gas this tankless water heater has it all.

  • H 25-3/4" x W 16-3/4"" x D 8-1/2"
  • Standing pilot ignition
  • 78% average efficiency
  • Compact and lightweight
  • Modulating gas valve to control temperature
  • Pressure relief valve included
  • Specifications:

    Power Input NG: 30,735 - 117,000 Btu
    LP: 30,735 - 117,000 Btu
    Minimum Flow Rate 0.5 gpm
    Rate to Activate
    Flow Rates
    90°F rise / 2.1 gpm
    77°F rise / 2.4 gpm
    65°F rise / 2.9 gpm
    55°F rise / 3.4 gpm
    45°F rise / 4.3 gpm
    Energy Factor NG: 0.69
    LP: 79
    Thermal Efficiency NG: 78%
    LP: 78%
    Dimensions H 25-3/4" x W 16-3/4" x D 8-1/2"
    Weight 33 lbs.
    Ignition Standing Pilot
    Modulating Gas Valve Yes
    Vent Size 4"
    Note: A pressure relief valve is included with this Tankless water heaters.
    Model # Description Price & Questions
    1600P-NG AquaStar 1600P Tankless Water Heater - Natural Gas $614.99
    1600P-LP AquaStar 1600P Tankless Water Heater - Liquid Propane Gas $614.95

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    Bosch AquaStar 1600PS Tankless Water Heater
    Tankless 1600PS Features:

    This tankless water heaters is specifically designed as a backup to preheated water produced by solar-based systems or from wood stoves. The tankless design saves floor space and with it's on demand heating only operates when your preheated water needs a boost in temperature.

  • H 29-3/4" x W 18-1/4" x D 8-3/4"
  • Standing pilot ignition
  • 80% average efficiency
  • Compact design
  • Modulating gas valve to control temperature
  • Pressure relief valve included
  • Specifications:

    Power Input NG: 23,400 - 117,000 Btu
    LP: 23,400 - 117,000 Btu
    Minimum Flow Rate 0.5 gpm
    Rate to Activate
    Flow Rates
    90°F rise / 2.1 gpm
    77°F rise / 2.4 gpm
    65°F rise / 2.9 gpm
    55°F rise / 3.4 gpm
    45°F rise / 4.3 gpm
    Energy Factor NG: 0.69
    LP: 79
    Thermal Efficiency NG: 78%
    LP: 78%
    Dimensions H 29-3/4" x W 18-1/4" x D 8-3/4"
    Weight 42 lbs.
    Ignition Standing Pilot
    Modulating Gas Valve Yes
    Vent Size 4"
    Note: A pressure relief valve is included with this Tankless water heaters.
    Model # Description Price & Questions
    1600PS-NG AquaStar 1600PS Tankless Water Heater - Natural Gas $719.12
    1600PS-LP AquaStar 1600PS Tankless Water Heater - Liquid Propane Gas $723.99

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    Bosch AquaStar 1600H Tankless Water Heater
    Tankless 1600H Features:

    This revolutionary tankless water heater utilizes a hydro-generated ignition system, allowing the water heater to operate without a standing pilot, electricity, or a battery. This innovative technology uses the energy from the flowing water to ignite the spark.

  • H 25-3/4" x W 16-3/4" x D 8-1/2"
  • 80% average efficiency
  • Compact & lightweight design
  • Modulating gas valve to control temperature
  • Pressure relief valve included
  • Specifications:

    Power Input NG: 30,735 - 117,000 Btu
    LP: 30,735 - 117,000 Btu
    Minimum Flow Rate 0.5 gpm
    Rate to Activate
    Flow Rates
    90°F rise / 2.1 gpm
    77°F rise / 2.4 gpm
    65°F rise / 2.9 gpm
    55°F rise / 3.4 gpm
    45°F rise / 4.3 gpm
    Energy Factor NG: 0.80
    LP: 80
    Thermal Efficiency NG: 80%
    LP: 80%
    Dimensions H 25-3/4" x W 16-3/4" x D 8-1/2"
    Weight 33 lbs.
    Ignition Hydro-generated
    Modulating Gas Valve Yes
    Vent Size 5"
    Note: A pressure relief valve is included with this Tankless water heaters.
    Model # Description Price & Questions
    1600H-NG AquaStar 1600H Tankless Water Heater - Natural Gas $754.87
    1600H-LP AquaStar 1600H Tankless Water Heater - Liquid Propane Gas $752.85

    - Or -Click here to view items already in your shopping cart

    Bosch AquaStar 125FX Tankless Water Heater
    Tankless 125FX Features:

    This tankless water heater features a built-in power vent, electronic ignition and no standing pilot. It is ideal for residential use when the installation calls for horizontal venting.

  • H 29-3/4" x W 18-1/4" x D 8-3/4"
  • 81% average efficiency
  • Compact & lightweight design
  • Modulating gas valve to control temperature
  • Electronic ignition
  • Pressure relief valve included
  • Specifications:

    Power Input NG: 28,000 - 130,000 Btu
    LP: 28,000 - 125,000 Btu
    Minimum Flow Rate 0.5 gpm
    Rate to Activate
    Flow Rates
    90°F rise / 2.3 gpm
    77°F rise / 2.7 gpm
    65°F rise / 3.3 gpm
    55°F rise / 3.8 gpm
    45°F rise / 4.6 gpm
    Energy Factor NG: 0.78
    LP: 81
    Thermal Efficiency NG: 80%
    LP: 82%
    Dimensions H 29-3/4" x W 18-1/4" x D 8-3/4"
    Weight 44 lbs.
    Ignition Electronic
    Modulating Gas Valve Yes
    Vent Size 4"
    Note: A pressure relief valve is included with this Tankless water heaters.
    Model # Description Price & Questions
    125FX-NG AquaStar 125FX Tankless Water Heater - Natural Gas $847.98
    125FX-LP AquaStar 125FX Tankless Water Heater - Liquid Propane Gas $844.96

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    Bosch AquaStar 2400E Tankless Water Heater
    Tankless 2400E Features:

    This heavy duty tankless water heater is great for families who need to operate two major hot water application at a time. With great energy efficiency and compact design, this tankless water heater has become very popular.

  • H 23-1/2" x W 15-3/4" x D 8-1/2"
  • 86% average efficiency
  • Compact design
  • Modulating gas valve to control temperature
  • Electronic ignition
  • Pressure relief valve included
  • Specifications:

    Power Input NG: 35,000 - 175,000 Btu
    LP: 31,000 - 175,000 Btu
    Minimum Flow Rate 0.8 gpm
    Rate to Activate
    Flow Rates
    90°F rise / 3.2 gpm
    77°F rise / 3.7 gpm
    65°F rise / 4.5 gpm
    55°F rise / 5.2 gpm
    45°F rise / 6.4 gpm
    Energy Factor NG: 0.80
    LP: 80
    Thermal Efficiency NG: 87%
    LP: 86%
    Dimensions H 23-1/2" x W 15-3/4" x D 8-1/2"
    Weight 47 lbs.
    Ignition Electronic
    Modulating Gas Valve Yes
    Vent Size 3"
    Note: A pressure relief valve is included with this Tankless water heaters.
    Model # Description Price & Questions
    2400E-NG AquaStar 2400E Tankless Water Heater - Natural Gas $1191.84
    2400E-LP AquaStar 2400E Tankless Water Heater - Liquid Propane Gas $1189.52

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    Bosch AquaStar 2400EO Tankless Water Heater
    Tankless 2400EO Features:

    Now you can install your water heater outside and eliminate the need to costly venting components. The attractive design of this tankless water heater will complement and house style and color, while freeing up precious space in your home. With an efficiency rating of 87%, the ability to supply two showers running simultaneously, and a digital temperature control, you'll be happy you went with the 2400EO tankless water heater.

  • H 26" x W 15-3/4" x D 8-1/2"
  • Freeze protection to 5°F
  • Installs outside
  • No vent pipe needed
  • 86% average efficiency
  • Compact design
  • Modulating gas valve to control temperature
  • Electronic ignition
  • Pressure relief valve included
  • Specifications:

    Power Input NG: 35,000 - 175,000 Btu
    LP: 31,000 - 175,000 Btu
    Minimum Flow Rate 0.8 gpm
    Rate to Activate
    Flow Rates
    90°F rise / 3.2 gpm
    77°F rise / 3.7 gpm
    65°F rise / 4.5 gpm
    55°F rise / 5.2 gpm
    45°F rise / 6.4 gpm
    Energy Factor NG: 0.80
    LP: 80
    Thermal Efficiency NG: 87%
    LP: 86%
    Dimensions H 26" x W 15-3/4" x D 8-1/2"
    Weight 47 lbs.
    Ignition Electronic
    Modulating Gas Valve Yes
    Vent Size N/A
    Note: A pressure relief valve is included with this Tankless water heaters.
    Model # Description Price & Questions
    2400EO-NG AquaStar 2400EO Tankless Water Heater - Natural Gas $1185.34
    2400EO-LP AquaStar 2400EO Tankless Water Heater - Liquid Propane Gas $1188.38

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    Ultraflow High BTU Stainless Steel Gas Connectors
    Ultraflow gas connectors
    These gas connectors feature:
    • Pre-assembled
    • Designed for applications with a significant BTU requirement
    • Can supply up to 1.5 million BTU (NG) or 2.4 million (LP), depending on length
    • Increases productivity by eliminating the need for pipe nipples, 90's and elbows
    • Common applications: tankless water heaters, commercial water heaters, furnaces, manufactured homes, boilers, rooftop HVAC units, and gas meters
    Description Price & Quantity
    Stainless Gasflex - 1"od (3/4"id) x 24" - with adapter to 3/4"fip x 3/4"mip $59.95
    Gas ball valve 3/4" $9.07


    to other/different gas connectors

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    to Takagi tankless water heaters

    need a higher flow rate? Click here to Takagi tankless water heaters
    need parts for your Aquastar/Bosch?

    Note: if you're replacing your existing water heater (old tank style),
    you may want to order a water heater drain pump to quickly/easily remove the water.

    frequently asked questions about Aquastar water heaters

    "Aquastar specifies the 'temp. rise' based on the GPM flow; what do you mean by this?"
    Temperature rise is the amount the heater raises the temperature of the incoming water, based on the flow rate shown of that water.

    "A friend of mine has a model 170 Aquastar. I don't see it listed on your site?"
    They are no longer available anywhere. For higher btu than the above, we recommend the very efficient Takagi tankless water heaters.

    instant water heaters"Will an instantaneous water heater save me money on my utility bills?"
    instant water heatersYes, in most applications you will see a savings. There are some variables that could reduce the amount you save. One example is you will not run out of hot water, so longer showers could cut into your savings. Also, the cost of electricity, propane and natural gas in your area will affect the amount of money saved. The higher the cost for the energy type used to heat your water, the quicker you will recover the higher initial cost of installing a tankless versus tank style water heater.

    Positives:

    Negatives:

    Summary:
    Tankless water heaters have their place. They're not "the answer" to every hot water need, but if they're used correctly they can be the solution to many of them.

    Help save our environment by saving energy.
    Stand-by heat loss wastes a LOT of energy.
    Installing tankless water heaters saves
    energy, as well as your pocket book in the
    long run. Think future! Think green.
    Think Tankless!

    We hope that we have helped you on this page with water heaters,
    and thank you for helping to make PlumbingSupply.com the most famous Internet plumbing supplier.



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