Is the Bosch AquaStar 125B ng the same as the original?

Our Aquastar 125B NG is older, manufactured prior to the Bosch purchase of the name, and though everything looks the same I do not know what design changes Bosch has made. It was already installed in our house when we bought it, so I have no information about the savings relative to a traditional tank water heater.

Why do I need a new Bosch 125B ng heater?

Since 2 gpm shower heads are standard nowadays, it shouldn’t be a problem. The only reason I needed a new 125B NG natural gas model was because I switched my house from propane to natural gas and the heaters can’t be converted like a stove or furnace.

What happens to my Bosch AquaStar in the winter?

I’ve found that in the winter time my Aquastar is extremely sensitive to variations in water flow unless I crank the gas knob all the way to the right on the front of the unit. This means it’s basically “off” or “on”, i.e., luke warm or scalding hot.

How big of flue do I need for Bosch 125B?

Also, on-demand heaters require at least a five inch flue. The three inch flue used with tank water heaters is not sufficient. The 125B is not an appropriate model for warm input water, such as that from solar hot water panels.

Our Aquastar 125B NG is older, manufactured prior to the Bosch purchase of the name, and though everything looks the same I do not know what design changes Bosch has made. It was already installed in our house when we bought it, so I have no information about the savings relative to a traditional tank water heater.

How does the Bosch 125b-ng tankless water heater work?

Cut water-heating costs by up to 50 percent with the Bosch AquaStar 125B-NG tankless water heater. The 125B-NG is fueled by natural gas and heats water on demand, supplying hot water at a rate of 4.3 gallons per minute–enough to meet the needs of one major application (shower, dishwasher, etc.) at a time.

What kind of gas does the Bosch 125b-ng use?

The 125B-NG is fueled by natural gas and heats water on demand, supplying hot water at a rate of 4.3 gallons per minute–enough to meet the needs of one major application (shower, dishwasher, etc.) at a time. The 125B-NG uses a standing pilot for ignition.

I’ve found that in the winter time my Aquastar is extremely sensitive to variations in water flow unless I crank the gas knob all the way to the right on the front of the unit. This means it’s basically “off” or “on”, i.e., luke warm or scalding hot.

What are the parts of an AquaStar water heater?

Aquastar Parts (part numbers 00000-30000) Part # Description Price & Quantity 22041 Screw, Water Valve Retaining Discontinued 22043 Screw Gas Valve Discontinued 22044 Screw Thermocouple Pushbutton Discontinued 22045 Screw Burner Manifold $2.07

Why is the pilot light on my water heater not working?

After cleaning, make sure you check on the thermocouple’s position. Also, check if it’s slightly bent. The thermocouple needs to be near the pilot light for it to receive heat and open the gas valve. If it’s too far away, heat will not be received and, therefore, an electric current will not be produced.

Since 2 gpm shower heads are standard nowadays, it shouldn’t be a problem. The only reason I needed a new 125B NG natural gas model was because I switched my house from propane to natural gas and the heaters can’t be converted like a stove or furnace.

Cut water-heating costs by up to 50 percent with the Bosch AquaStar 125B-NG tankless water heater. The 125B-NG is fueled by natural gas and heats water on demand, supplying hot water at a rate of 4.3 gallons per minute–enough to meet the needs of one major application (shower, dishwasher, etc.) at a time.

The 125B-NG is fueled by natural gas and heats water on demand, supplying hot water at a rate of 4.3 gallons per minute–enough to meet the needs of one major application (shower, dishwasher, etc.) at a time. The 125B-NG uses a standing pilot for ignition.

Can a Bosch 125B be used with two shower heads?

The 125B is not intended for two hot water uses at once. For that get a bigger model or install two. The 125B probably also works best with low flow shower heads, at least in places with cold water, because the hot water flow can be fairly slow when the incoming water is quite cold.