tankless water heater Bosch, flow heater, flash heater - $100 (Fremont)

tankless water heater Bosch, flow heater, flash heater 1 thumbnail

Fremont near 85th Ave n

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condition: like new

make / manufacturer: Bosch

model name / number: MODEL GWH 1600 H

size / dimensions: 9 x 17 x 26

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Bosch GWH 1600-H indoor gas powered tank-less water heater. 117,000 Btu/hr input, 4.36 GPM. These are for Natural Gas only (not LPG/propane). I have three of these. They were installed briefly but barely used. It didn't work to plumb them in parallel because the water flow was not fast enough from one faucet to make them start. So I replaced them with two large tank-type water heaters which parallel nicely.

These water heaters need no electricity or batteries and they work when the power goes out. They are powered by the flow of water. Each one is 17" wide, 26" high, and 9 inches deep. Each one weighs 35 lbs. They require 5"vents and connect to 1/2" NPT pipe threads for water and 3/4" NPT for gas.

Full instructions and specifications are here: https://www.bosch-homecomfort.com/us/media/country_pool/documents/discontinued-products/discontinued-aquastar-models/201208022203210_1600h_english_05_2007.pdf

They cost about $750 each when new and it looks like parts are still available. Buy one, two or three.
$100 each.

post id: 7914177375

posted: 2026-02-09 19:24

updated: 2026-02-12 01:55

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tankless water heater Bosch, flow heater, flash heater - appliances...

Bosch GWH 1600-H indoor gas powered tank-less water heater. 117,000 Btu/hr input, 4.36 GPM. These are for Natural Gas only (not LPG/propane). I have three of these. They were installed briefly but...