Viessmann Vitodens Classic Gas Condensing Combi Boiler 28kW – Vertical Flue

Pre-Commissioned | Energy Class A | Inox-Radial Heat Exchanger | 10-Year Warranty

The Viessmann Vitodens Classic 28kW Gas Condensing Combi Boiler is a compact, high-efficiency heating solution built for modern homes. Whether you're replacing an old boiler or installing a new system, the Vitodens Classic delivers outstanding performance, ultra-quiet operation, and exceptional energy efficiency — all in a sleek, space-saving design.

Pre-commissioned straight from the factory, this boiler is ready to install with minimal setup time, making it the ideal choice for heating engineers and homeowners looking for a fast, reliable upgrade.

Why Choose the Viessmann Vitodens Classic?

• Pre-commissioned — factory-set for quick and easy installation
• Energy efficiency class A — up to 98% seasonal efficiency (Hs gross CV) for lower energy bills
• Inox-Radial stainless steel heat exchanger — highly durable, corrosion-resistant, and built to last
• MatriX-Plus burner — delivers high efficiency and ultra-clean combustion
• 28kW output — powerful heating and hot water for medium to large homes
• Low operating noise — quiet enough for installation in living spaces and kitchens
• Compact dimensions — low installed height for easy replacement of older boilers in tight spaces
• High DHW convenience — standby function ensures hot water is always ready on demand
• Power-saving circulation pump — reduces running costs further
• LCD control unit — clear backlit display with intuitive 4-button operation
• Vertical flue included — suitable for a range of installation configurations
• 10-year heat exchanger warranty — exceptional long-term peace of mind

Key Specifications

• Brand: Viessmann
• Range: Vitodens Classic
• Part Number: PN11259901B1
• Boiler Type: Gas Condensing Combi
• Rated Heating Output: 28kW
• Flue Type: Vertical
• Energy Efficiency Class: A
• Seasonal Efficiency: Up to 98% (Hs gross CV)
• Heat Exchanger: Inox-Radial Stainless Steel
• Burner: MatriX-Plus
• Colour: White
• Pre-commissioned: Yes

What's Included

• 1 x Viessmann Vitodens Classic 28kW Gas Condensing Combi Boiler
• Vertical Flue Kit

Important Information

• Gas boilers must be installed by a Gas Safe registered engineer
• Always check local building regulations before installation
• Suitable for natural gas installations