The Biasi Rinnova 25kW Combi Boiler is a high-efficiency, wall-mounted condensing boiler designed to provide reliable central heating and instant hot water for small to medium-sized homes. Supplied with a standard horizontal flue and backed by a 7-year manufacturer warranty, it offers a cost-effective and space-saving solution for modern domestic heating systems.
Key features
- 25kW output – Ideal for 2–3 bedroom homes with moderate hot water demand
- Supplied with standard flue – Includes horizontal flue kit for straightforward installation
- 7-year warranty – Reliable long-term cover (subject to manufacturer terms)
- A-rated energy efficiency – Helps reduce fuel consumption and energy bills
- Gas Adaptive technology – Automatically adjusts combustion for optimal efficiency and lower emissions
- Compact wall-mounted design – Suitable for kitchen cupboards and tight spaces
- Low NOx (Class 6) – Environmentally friendly operation with reduced emissions
Performance & specifications
- Central heating output: up to 25kW
- Domestic hot water flow rate: approx. 12.8 L/min (ΔT 30°C)
- Efficiency: up to ~98–109% (condensing operation)
- Modulation ratio: up to 1:9 for improved efficiency and control
- Fuel type: Natural gas / LPG compatible
- Dimensions (approx.): 700 x 400 x 300 mm
Design & installation benefits
The Rinnova range features an advanced condensing heat exchanger that captures and reuses heat from flue gases, improving overall efficiency and reducing running costs.
Its adaptive combustion control continuously adjusts to gas quality, ensuring consistent performance without manual intervention. Combined with a lightweight, compact casing, this makes installation and servicing straightforward for engineers while saving valuable space in the home.
What’s included
- Biasi Rinnova 25kW combi boiler
- Standard horizontal flue kit
- Installation fittings and mounting components
Why choose the Biasi Rinnova 25kW?
- Excellent balance of performance and affordability
- Strong hot water flow for everyday household use
- Compact size ideal for modern homes
- Advanced gas adaptive technology for efficiency and reliability
The Biasi Rinnova 25kW Combi Boiler is a dependable and energy-efficient heating solution, combining compact design, smart technology, and solid warranty support—perfect for homeowners seeking reliable comfort at an affordable price point.








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