Gas Tankless Water Heater Comparison  View Models >>

Gas Tankless Water Heater Comparison

Tankless Model Heating Power The Lowdown

Bosch 2400E Tankless Water Heater
Liquid Propane or Natural Gas
Heating Capacity: 2 Showers

  • 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
The Bosch 2400EO liquid propane and natural gas tankless water heaters are the most powerful and energy efficient gas model offered today. If you want a reliable, powerful tankless water heater that can heat 2 showers simultaneously, look no further. Other features include:
  • Horizontal or vertical venting options
  • Qualifies for $300 tax credit
  • Max 175,000 BTU
  • 12 Year Warranty
  • Electronic Ignition

Bosch 1600H Hydro Power Tankless Water Heater
Natural Gas or Liquid Propane
Heating Capacity: 1 Shower

  • 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
The Bosch 1600H Hydro power tankless water heater can provide ample power to run one shower at a time plus it will run with no electrical power! This unit is able to activate the gas valve by simply using water. It also qualifies for a $300 tax credit!
  • Vertical & Horizontal (With AQ4 Kit)Venting
  • Max 117,000 BTU
  • 12 Year Warranty

Bosch 1600P Pilot Ignition Tankles Water Heater
Natural Gas or Liquid Propane
Heating Capacity: 1 Shower

  • 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 gp
The Bosch 1600P gas powered tankles water heater produces the same heating output as the 1600H except that it is not as energy efficient. It uses a standing pilot ignition, so it requires no electricity.
  • Vertical & Horizontal (With AQ4 Kit)Venting
  • Max 117,000 BTU
  • 12 Year Warranty

Bosch 125FX Tankless Water Heater
Liquid Propane or Natural Gas
Heating Capacity: 1-2 Showers

  • 45°F Rise @ 4.6 gpm
  • 55°F Rise @ 3.8 gpm
  • 65°F Rise @ 3.3 gpm
  • 77°F Rise @ 2.7 gpm
  • 90°F Rise @ 2.3 gpm
The Bosch 125FX tankless hot water heater is the 2nd most powerful tankless water heater offered by Bosch and is ideal for horizontal venting applications. It can power one shower in colder climates and 2 in areas where water temperatures are warm.
  • Horizontal Venting Only
  • Electronic Ignition
  • Max 130,000 BTU
  • 12 Year Warranty

Bosch 2400EO Outdoor Tankless Water Heater
Liquid Propane or Natural Gas
Heating Capacity: 2 Showers

  • 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
The Bosch 2400EO Tankless Water heater is a powerful gas model that is used for outdoor installation. Outdoor installation may be a good option for you if you do not have the ability to vent a traditonal model.
  • Electronic Ignition
  • No ventilation required
  • 12 Year Warranty
  • Max 175,00 BTU

Bosch 100P Compact Point of Use Tankless Water Heater
Liquid Propane or Natural Gas
Heating Capacity: 1 Smaller Application (sink) or 1 shower only with very warm incomng water temperatures.

  • 45°F Rise @ 2.6 gpm
  • 55°F Rise @ 2.1 gpm
  • 65°F Rise @ 1.7 gpm
  • 77°F Rise @ 1.5 gpm
  • 90°F Rise @ 1.3 gpm
The Bosch 1000P tankless water heater is a small inexpensive unit meant for small applications. It's great for small cabins or guest houses that may only be used in warmer weather. It won't have the power to heat 1 shower year round in a normal house.
  • Standing Pilot Ignition - No electricity needed
  • Vertical venting only
  • 12 Year Warranty
  • Max 74,900 BTU
Have a question? Call 1-800-297-6076
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