Opus Calypso SE Woodburner | 8.3kW DEFRA Exempt Boiler Stove

The Opus Calypso SE is an 8.3 kW woodburning boiler stove designed to provide both room heat and hot water, with full DEFRA Exempt approval for use in smoke-control areas.

Delivering around 3.4 kW to the room and 4.9 kW to the water, it can support radiators, towel rails or domestic hot water while still offering the atmosphere of a real fire.

The stove comes pre-plumbed for easier integration into an existing heating or hot water system. Its tall cylindrical body and wide curved glass window offer an impressive view of the flames, creating a strong focal point while delivering reliable heat output. The full-glass design suits modern interiors and open living spaces.

With an efficiency of approximately 83.9%, the Calypso SE is engineered for clean, efficient combustion. The air-wash system helps to keep the glass clear, and the clean-burn firebox reduces emissions while making excellent use of each log. Its SE approval ensures it meets the strict standards required for burning wood in designated smoke-control zones.

Built from high-quality materials, the Calypso SE offers durability and dependable performance for everyday use. Simple and intuitive controls make it easy to light, operate and maintain steady heat for both the room and the water system.

The Opus Calypso SE offers the practicality of a boiler stove, the elegance of a modern cylindrical design and the freedom to burn wood cleanly and legally in smoke-control areas.

Technical Data

• Height: 1166mm
• Width: 565mm
• Depth: 462mm
• Flue Diameter: 150mm
• Fuel: Wood
• Nominal Heat Output: 8.3kW
• Efficiency: 83.9%
• Nominal Output to Water: 4.9kW
• Nominal Output to Room: 3.4kW
• Eco Design A+