


12kW Heat Output with 81% Efficiency
The Henley Severn 12kW Eco Multi-Fuel Stove combines a 12kW heat output, 81% efficiency and an A+ energy rating. It offers a heating option for larger spaces, with suitability dependent on the room’s size, insulation and heating requirements.
Clean Burn Technology with Airwash
The Clean Burn system introduces pre-heated secondary air above the fire to help combustion gases burn more completely. An Airwash system directs air across the inside of the glass, helping reduce soot build-up and maintain a clearer view of the flames.
Multi-Fuel Heating with External Air Connection
Designed for wood logs and approved smokeless fuels, the Severn ST452 provides flexibility when choosing fuel. Its external air connection allows combustion air to be supplied from outdoors when appropriately installed.
Description
The Henley Severn 12kW Eco Multi-Fuel Stove in Matt Black | ST452 combines substantial heating output with understated styling. With 81% efficiency and an A+ energy rating, it provides a practical option for rooms with higher heating requirements, subject to an installer’s assessment.
Clean Burn technology supports more complete combustion, while the Airwash system helps keep the viewing glass clearer during use. Primary and secondary air controls allow combustion to be managed according to the manufacturer’s operating instructions.
The Severn ST452 accommodates wood logs and approved smokeless fuels, offering a choice of heating fuels. An external air connection provides an option for drawing combustion air directly from outside, with compatibility assessed for your property and ventilation system. Its matt black finish complements both traditional fireplaces and contemporary interiors.
FAQ
What is the heat output of the Henley Severn ST452?
The Henley Severn ST452 has a listed heat output of 12kW. An installer should assess whether this output matches your room’s heat loss, dimensions and insulation.
How efficient is the Henley Severn 12kW stove?
The Henley Severn 12kW stove has a listed 81% efficiency and an A+ energy rating. Actual heating performance depends on the fuel, installation, maintenance and correct operation.
What fuels can the Henley Severn ST452 burn?
The Severn ST452 is designed for wood logs and approved smokeless fuels. Follow the manufacturer’s instructions for the specific fuels suitable for this model.
How does the Clean Burn system work?
The Clean Burn system introduces pre-heated secondary air above the main fire. This helps remaining combustion gases burn more completely, supporting efficient combustion.
Does the Henley Severn 12kW stove have an Airwash system?
Yes. The Severn 12kW includes an Airwash system that directs air across the inside of the viewing glass to help reduce soot deposits. Periodic glass cleaning is still required.
Can the Severn ST452 connect to an external air supply?
Yes. The Henley Severn ST452 has an external air connection for supplying combustion air from outdoors. An installer should assess the installation, particularly in airtight homes or properties with mechanical ventilation.
What size is the flue connection on the Henley Severn ST452?
The supplied specifications list a 127mm flue connection. Your installer should confirm the complete flue requirements against the manufacturer’s instructions before installation.
What is the difference between the Severn 8kW and 12kW models?
Based on the supplied specifications, the Severn ST452 delivers 12kW with 81% efficiency and an A+ energy rating, while the Severn ST312 delivers 8kW with 79% efficiency and an A energy rating. Choose the output that matches your property’s heating requirements.
Technical Data
| Feature | Specification |
|---|---|
| Brand | Henley |
| Model | Severn |
| Product Code | ST452 |
| Product Type | Eco Multi-Fuel Stove |
| Finish | Matt Black |
| Fuel Type | Wood Logs and Approved Smokeless Fuels |
| Heat Output | 12kW |
| Efficiency | 81% |
| Energy Rating | A+ |
| Flue Connection Size | 127mm |
| Primary Air Control | Yes |
| Secondary Air Control | Yes |
| Clean Burn System | Yes |
| Airwash System | Yes |
| External Air Connection | Yes |