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Aquastar 2400ES Whole House Tankless Water Heater AquaStar Model 2400ES LP Whole house tankless direct vent gas water heater, 175,000 Btu input, electronic ignition, with built in power vent for vertical or horizontal venting. Provides endless hot water for two major applications at once (two showers running simultaneously). Can replace 75-gallon storage tank water heater. Natural Gas or Liquid Propane. Optional Accessories: Horizontal Vent Kit and Remote Thermostat. THIS UNIT MUST BE VENTED USING CATEGORY III STAINLESS STEEL VENTING.
Capacity: 2 to 3 Bathrooms
Dimensions: H: 30" W: 17" D: 11"
Weight: 67
Max GPM @ 45¦F Rise: 6.4
Energy Factor: NG .85 LP .86
Minimum Input: 19,900
Maximum Input: 175,000
Vent Size: 3" (stainless steel)
Gas Connection: 3/4"
Water Connections: 3/4"
Warranty: 12-year on heat exchanger, 2-years on parts

  • Endless hot water
  • Delivers up to 6.4 gallons per minute
  • Supplies hot water for 2 applications
  • Direct vent room-sealed combustion
  • Built-in power vent for horizontal or vertical venting
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Manuals (1)
Fuel Type:

Natural Gas

Product Type:

Tankless Heater


2 Showers

Energy Factor:


Gas Input:

4" W.C.


12 Year on Heat Exchanger/ 2 Year on Parts


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