Power vent option illustrating the side wall vent option that allows horizontal venting up to 100' and elimination of the chimney. Use power vent AQ1 for models 125BS, 125B, and 125HX.
NOTE:
For Massachusetts Residences considering installing the AQ1 with their Bosch Tankless Water Heater,
please read this document: Sidewall Venting Information for Commonwealth of Massachusetts
[PDF].