Bosch AquaStar Indoor Natural Gas Tankless Water Heater with Vent Hood #125 "aq125b" Questions

my bosch gas water heater does not give out my bosch AQ125b gas water heater does not give out consistent warm water it's either hot or cold. any ideas what might be going on? This sometimes happens ...

Pilot light on bosch aq125b will only stay lit as long as I hold down button, turns off as soon as I let go of button. I was having the same problem-it was caused by a defective gas flue sensor, which

I bought a AQ125BNG from my neighbor and when I read the instructions it says to use a gas pressure regulator on the AQ125B but I dont know if I need it on my AQ125BNG too is not that clear. I will ap

I have an AQ125B-NG not producing hot water.. Replaced Heat Exchanger after a leak was discovered. Leak problem resolved now. But now water will not get above luke warm with shower or sink. Flame ...

water not hot enough I have a Aquastar AQ125B how do I increase the water temp? Often this is a problem of gas piping. It is likely too small. The pipe should be 5/8" copper or larger, or 1/2" Black ...