Click to enlargeAquastar 125BS Tankless Water Heater



The Aquastar 125BS can be connected to a solar water preheating system. The AquaStar 125BS solar back up tankless water heater features a thermostatic control for a steady output no matter what the incoming temperature is. When your solar heated water is at or above the setting on the AquaStar, the burner will not ignite at all.

With an AquaStar tankless hot water heater by Bosch,- you'll never run out of hot water again. And you'll enjoy instant savings of up to 50% on your heating bill. Once your AquaStar tankless water heater is installed, you will never have to buy another hot water heater again. If they ever do need repair, AquaStar tankless water heaters are designed so that all parts are replaceable.

Runs one major appliance (sink, shower, washer, etc.) at a time

-3.4 gallons per minute (GPM)

-Easy dial-in thermostatic control

-Dimensions: (H)29.75" x (W)18.25" x (D)8.75"

-Weight: 44 lbs

-5" exhaust vent diameter

-Pressure relief valve included

-power vent kit available for horizontal venting

Not approved for use in mobile homes, boats, or RVs

Download manuals here

Warranty: 15 years on heat exchanger if installed by a licensed professional (10 years otherwise), 2 years on all other parts. If installed in other than single-family dwelling, then heat exchanger warranty is 2 years.






Tankless Aquastar 125BS Tankless Water Heater 3.4 GPM 125BSRetail Price: $862.00Sale Price: $730.00Fuel: 

Click to enlargePower Vent KitThis power vent kit allows for horizontal venting and includes a backflow-preventing freeze protection circuit.

AQ1Retail Price: $352.00Sale Price: $290.00

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