Bosch Greenstar Combi 100 ZWB28 Wall Mount Condensing Boiler 100K BTU

Overview

Bosch Greenstar Combi 100 ZWB28 – High-Efficiency Condensing Boiler

The Bosch Greenstar Combi 100 (ZWB28) is a high-efficiency wall-mounted condensing combi boiler, delivering space heating and domestic hot water from a single compact unit. Designed for residential installations where efficiency, quiet operation, and space savings matter most.

With up to 95% AFUE efficiency, a wide modulation range, and an advanced Al-Mg-Si monoblock heat exchanger, this unit provides reliable performance with reduced fuel consumption and lower emissions.

Key Features & Benefits:

• 100,000 BTU max input
• On-demand domestic hot water (2.65 GPM @ 72°F rise)
• Wall-mounted space-saving design
• Stainless steel pre-mix burner
• Sealed combustion / direct vent
• Integrated outdoor reset control
• Natural gas or LP operation
• Quiet, insulated cabinet
• Ideal for residential retrofits or new construction

Factory new, installer-ready, and built to Bosch engineering standards.

Product details

Part / SKU	7738100002

Package includes

• Bosch Greenstar Combi 100 ZWB28 Wall Mount Condensing Boiler 100K BTU

Included components and any stated pack quantity are as described in this listing. Optional accessories shown separately are sold separately unless expressly included above.