Wall-mounted gas condensing boiler
Condens 8300i W
Advanced hydronic heating with premium performance
The Bosch Condens 8300iW range delivers quiet, efficient hydronic heating in a sleek, German-engineered unit. Available in 25kW, 35kW heating-only models and a 35/40kW combi model, it’s suitable for both internal and external installations. Designed for Australian conditions, the 8300iW is hydrogen-ready and backed by Bosch’s trusted local service network.
- German-made quality with proven reliability
- Available in 25kW, 35kW (heating only) and 35/40kW (heating + hot water)
- Internal and external installation options
- Whisper quiet operation
- 94% seasonal efficiency rating
- Hydrogen-blend ready (up to 20%)
- Compatible with Bosch CR50 controller for optimum efficiency
- 2-year parts & labour warranty, 5-year heat exchanger warranty
Benefits
Extremely economical
The advanced modulating burner automatically adjusts its output to match your home’s heating needs — maintaining high efficiency even when full output isn’t required, which helps reduce gas usage and energy costs.
Premium performance, made in Germany
Engineered and manufactured in Germany, every Condens 8300iW unit undergoes rigorous testing to ensure long-term durability, comfort and energy efficiency.
Quiet operation
Designed for comfort without disruption, the 8300iW operates at a near-silent level — ideal for family homes and bedrooms.
Flexible installation
Choose from internal or external installation to suit your layout. The outdoor casing is Australian-made from COLORBOND® steel for weather resistance and durability.
Smart control integration
Pair with the Bosch CR50 Controller to manage temperature and schedules for enhanced comfort and lower energy use.
Bosch quality and service
With over 100 years in Australia, Bosch offers lifetime appliance support, a dedicated local service network, and peace of mind well beyond warranty.