Bosch 2700ES Aquastar Indoor Tankless Water Heater

Bosch 2700ES Aquastar Tankless Natural Gas Water Heater

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Full model name: Bosch 2700ES NG Aquastar 7.2 GPM Indoor Tankless Natural Gas Water Heater

Bosch 2700ES Aquastar Tankless Natural Gas Water Heater


Never run out of hot water again in your home! Bosch 2700es is a heavy-duty water heater capable of providing 7.2 gallons of hot water per minute. This water heater is capable of supporting 2-3 major appliances simultaneously. That means you can use your shower, washing machine and dishwasher at the same time, without running out of hot water.

Bosch 2700es natural gas water heater is designed with space efficiency in mind. This tankless water heater saves much valuable space compared to the tank models. It can be installed in many different ways and comes with a built-in power vent that allows horizontal or vertical venting.

Bosch 2700ES is currently not available on Amazon.

This natural gas water heater is perfect for:

  • Medium-sized homes
  • Large-sized homes with multiple bathrooms, taps, etc.
  • People who want to use several appliances simultaneously.

Features of Bosch 2700ES water heater:

  • Can save up to 50% off utility costs annually
  • Delivers over 7 gallons per minute, enough to run 2-3 major applications at once
  • Direct vent room-sealed combustion
  • Built-in power vent allows for vertical or horizontal vent termination
  • 12-year warranty on heat exchanger – 2 years on parts
  • Provides an endless supply of hot water
  • Electronic ignition – 120V plug-in (no standing pilot)
  • Space-saving size and weighs only 67 pounds
  • Outdoor installation kit (AQOK) available for approved climates
  • Wireless Remote (TSTAT2) available for quick and easy temperature control

The life expectancy of this unit is about 20 years, according to the manufacturer. 20 years of endless hot water sounds great, not mentioning the amount of money that will be saved.

The Pros:

Never runs out of water
No fluctuations in water temperature even when used by multiple users
Space saving design
Can be installed outdoor using additional installation kits

The Cons:

It may take a while (a few seconds) for the water to get hot.

Here is one positive review from Keven M., a happy customer who bought this unit:

After researching tankless systems, and consulting several plumbers I do business with, I took a leap of faith and bought the Bosch 2700ES. Let me tell you .. amazing is the best thing I can tell you! Our home is a 4 bedroom/ 3 full bath with 2 teenagers, my wife, and myself. First morning I was a little nervous jumping into the shower as my wife was already in the shower upstairs, but like everything else Bosch we own, it stood the test, and the water was sizzling! (Keven M.)

And here is one negative review from John K:

had a problem with the gas valve on new heater, when Bosch found out i bought it from they said they would not honor warranty. I needed hot water so i had them send a new gas valve which i paid for ( $ 260.00 ) they sent wrong part. As of a week and a half latter i still do not have hot water. Would never buy a Bosch appliance or tool again. This company has been inpossible to deal with. 19 phone calls and no hot water and they could care less.

Another reviewer (Jason D.) is giving his advice:

“Microswitch can prevent igniter from sparking– easy fix!”
If there is no clicking sound, it almost always means the main ignition or control unit (box with red and green lights and wires coming from it) is not getting the supply voltage. The voltage is supplied by a generator that is getting energy from the flow of water (the “hydro generator”). First, disconnect the wire connector at the hydro-generator and check the voltage while water is running.. If you have at least 1 VAC, then check the “microswitch” that allows the hydro-generator voltage to reach the ignition unit. To check it, disconnect the other wire connector that is on the black wire coming from the hydrogenerator that is closer to the ignition unit. Then, with the water running, stick a small screwdriver in the male plug side to short the two wires in order to bypass the microswitch (per Bosch tech support instructions). You should now hear clicking and see the unit work…

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