1/08/2012

Bosch 125B-NG AquaStar Natural Gas Tankless Water Heater Review

Bosch 125B-NG AquaStar Natural Gas Tankless Water Heater
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(More customer reviews)
Well, looks like my prior review on 4/22 has been deleted. I highly suspect that the complainers here, or one of them, "reported" me because I referred to their reviews and that probably violated policy, yada yada yada.
Ain't it the way of the world? Wonder how long this one will last.
In any event, if you are at all interested in the AquaStar, just listen to the positive reviewers, hook it up properly, and you'll be very happy with it I'm sure.
I suspect that the most common problems folks have are twofold:
1) They probably don't use the required 3/4" gas supply pipe and try to get by with the old 1/2" pipe that supplied their old tank-type hot water heater. Most 30-40 gallon tank types have a BTU input specification of 40,000 BTU's. The 1/2" supply line is adequate for that number of BTU's, but the AquaStar requires 117,000 BTU's and that's three (3) times as much. Thus you DO need to use the 3/4" supply line or you're just not feeding the thing enough fuel.
Don't give it enough gas to burn and what do you think is going to happen?
2) A lot of folks might try to get by with the old 3" vent pipe their old heater used. Again, that's not going to work. You NEED to vent the AquaStar with the proper-sized vent pipe or it's not going to breathe properly and thus not going to work properly.
Other than that, there's not much to worry about with the installation of this unit.
Install it properly and it will perform well for you and meet your expectations fully for many, many years to come.
Also, as I noted in my amended review previously -- now deleted of course -- this model here has changed from when I bought mine a few years ago. This new 125B has a standing pilot. If you want one like my old 125B, you now need to get the Model 125HX, which has the electronic ignition, as does mine. The difference between mine and that one is that mine uses 2 D-cell batteries, whereas the 125HX uses a water-powered turbine to supply the necessary electical power to fire the unit. Neato.
Also note (as I mentioned previously) that the former manufacturer, CONTROLLED ENERGY CORP., has been acquired and thus is no longer the current manufacturer. Try going to their former website and see for yourself.
I doubt this has compromised the quality or service, but it's something you should know.

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