The AquaStar Model 2400E-NG (Natural Gas) tankless hot water heater has quickly become the tankless water heater of choice for families needing to operate two major hot water applications at a time. With average life expectancy of more than 20 years, energy savings of up to 50% and, an endless supply of hot water, your family will thank you for years to come. This unit is easy to install and has multiple venting options. It is approved for up to a $300 tax credit by the U.S. Department of Energy and comes with a 12 year warranty on its heat exchanger.


Bosch 2400E tankless gas water heater can supply 2 showers at the same time at a rate of 6.3 gallons per minute at a 45º F rise. The Bosch Aquastar 2400E features direct vent room-sealed combustion and electronic ignition. The Bosch AquaStar 2400E can be vented vertically or horizontally to the outside. The unit requires a 3" stainless steel single wall vent pipe. Other vent types will void the warranty and present a health hazard.

Why Buy Bosch Tankless Water Heaters from CompactAppliance.com?

Brand Name Quality
Bosch has been manufacturing tankless water heaters for over 60 years. Their gas tanklesswater heaters are made in Portugal by a German manufacturing plant. Bosch's gas tankless water heaters feature a 12 year warranty on its heat exchanger and 2 years on parts. Bosch tankless water heaters feature heavy copper heat exchangers that feature a rifled intererior. This prevents wear and tear as well as material build up in the pipe.

Authorized Retailer

We are an authorized retailer which means in the unlikely even that you should have a problem with your tankless water heater you'll be supported by an authorized Bosch servicer. Buying from an unauthorized dealer may lead to you getting incorrect information and could void your warranty.

Expert Sales And Service
We are the tankless water heater experts. Should you have any questions concering your purchase simply call us
at 800 297-6076 and we'll make sure you get the information you need and the right product
for your application.

Temperature Rise / Gallons Per Minute:

• 90º F rise / 3.2 gpm
• 77º F rise / 3.7 gpm
• 65º F rise / 4.5 gpm
• 55º F rise / 5.2 gpm
• 45º F rise / 6.4 gpm

Height: 23 1/2"

Width: 15 3/4"

Depth: 8 1/2"

Primary Description

• Manufacturer: Bosch
• Model: 2400E-NG (Natural Gas)
• Delivers over 6 gallons per minute, enough to run two showers at once
• Electronic ignition: plugs into 120V (no standing pilot)
• Smaller than a suitcase and weighs only 47 pounds
• Saves up to 50% off utility costs
• Direct vent room-sealed combustion
• Warranty: 12 Years on Heat Exchanger, 2 Years Parts
• Built-in power vent allows for vertical or horizontal venting
• Provides ENDLESS supply of hot water
• Wireless remote thermostat (TSTAT2) available to digitally control output temperature.
• Qualifies for $300 tax credit
• Optional Accessories: Horizontal Vent Kit (AQ3) & Remote Thermostat (TSTAT2)
• Weight: 47 pounds
• Dimensions: 23 1/2"h x 15 3/4"w x 8 1/2"d

Venting (Exhaust):

• Diameter: 3 inch
• Material: Stainless Steel (AL29-4C) sealed
• Minimum length: 3 ft.
• Maximum length: 26 ft. (8m) with one 90 degree elbow. Less 2.5 ft. for each additional 90 degree elbow (1.25 ft for each 45 degree elbow)
  

Venting (Intake) (Room-sealed installation):

• Diameter: 3 inch
  
• Material: PVC, Aluminum or Galvanized
  
• Minimum length: 3 ft.
  
• Maximum length: 26 ft. (8m) with one 90 degree elbow. Less 2.5 ft. for each additional 90 degree elbow (1.25 ft for each 45 degree elbow)

Technical Specifications:

• # Of Applications: 2 showers concurrently
  
• External Venting: Horizontal or vertical. Minimum of 3 ft, maximum of 26 ft. Material required: 3 inch wide stainless steel
  
• Combustion Type/Venting - External Venting. Minimum of 3 ft., maximum of 26 ft. Material required: 3 inch wide PVC
  
• Power type: Natural Gas - 35,000 - 175,000 BTU
  
• Efficiency; .80 energy factor; 87% energy efficiency
  
• Exhaust vent - 3 inches. Requires stainless steel pipe
  
• Water fittings: 3/4" Male NPT
  
• Gas Connection: 3/4" Male NPT
  
• Internal combustion vent - 3 inches diameter. PVC/Galvanized pipe
  
• Liquid Propane Pressure Minimum: 11" WC; Liquid Propane Pressure Maximum: 14" WC
  
• Water Pressure Minumum: 30 PSI; Water Pressure Maximum: 150 PSI

Energy Requirements

• Ignition: Electronic (120V plugs in)
  
• Power Liquid Propane: 31,000 - 175,000 BTU´s
  
• Energy Factor: .80
  
• Thermal Efficiency: 87%

***Our Recommended Accessories

• Horizontal Vent Kit For Bosch 2400E Tankless Water Heaters - Required for venting 2400E tankless water heaters horizontally through a wall.
• Sioux Chief Gas Tankless Water Heater Connector Set - Required to connect all gas tankless water heaters to the corresponding water and gas lines. Includes pressure relief valve.
• Aqua Pure Hot Water Filter System - Recommended to prevent scale build up in all tankless water heaters.

You may download an owner's manual and quick spec sheet below. Please note you will need Adobe Acrobat.

2400E Installation Manual

2400E Quick Specs Guide

You may download a product owner's manual below:

• Download Product Sell Sheet(PDF)

• Download Product Installation Manual(PDF)

• Get Adobe Acrobat Reader

**Please note, Adobe Acrobat Reader is required to view pdf files

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This product has been Discontinued.

This item ships UPS or FedEx ground. Delivery times related to these ship methods are usually between 2 and 5 business days once the product leaves the warehouse. We will email you tracking information once the product leaves our warehouse. UPS or FedEx ground deliveries do not require a signature and may be left at the ship to location. All deliveries will occur Monday through Friday.

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