Product Information
Return Unit
Compatible with 8 equipment models
- KWB28 Bosch Greenstar KWB28 Floor Boiler
- KWB35 Bosch Greenstar KWB35 Floor Boiler
- KWB42 Bosch Greenstar KWB42 Floor Boiler
- ZWB28 Bosch Greenstar ZWB28 Wall Boiler
- ZWB28-3A Bosch Greenstar Pro ZWB28-3A Wall Boiler
- ZWB35 Bosch Greenstar ZWB35 Wall Boiler
- ZWB42 Bosch Greenstar ZWB42 Wall Boiler
- ZWB42-3A Bosch Greenstar Pro ZWB42-3A Wall Boiler
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Fast Shipping
In-stock orders ship within 1 business day to anywhere in Canada.
Code-Compliant
All products meet Canadian HVAC and gas code standards.
Wholesale Pricing
Trade pricing for licensed contractors. 40+ years in the industry.
Bosch Return Unit (Part No. 87161068440) is a factory replacement component for Bosch HVAC and home-comfort systems, intended to manage return-air pathways and help maintain proper airflow and system balance. Designed for streamlined field service, the unit simplifies installation and parts replacement while supporting compatibility across Bosch equipment. Official Bosch North America documentation for part 87161068440 was not found; description is based on product name/category. (bosch-homecomfort.com)
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