ᐅ KfW 40 house with a 10 kW wood stove—too large or appropriate?

Hello everyone,

We are currently planning to install a 10 kW wood stove in our open living, cooking, and dining area. It is intended solely to create a cozy atmosphere and will be lit in the evenings only; there is no water heat exchanger. My question is whether this capacity is oversized or appropriate? The area is about 80 m² (860 sq ft), see attached photos of the floor plan and excerpts from the stove manufacturer. Thanks in advance for your answers.
Best regards

No, it’s not too large. But please avoid installing heat-retaining bricks anywhere. The heat will just be blown straight out through the chimney.

We also had a similarly large fireplace (but as a tunnel fireplace) in our previous house a few years ago (built to KfW 55 standard). It was an open living/dining area of about 75m² (800 sq ft).
Yes, the room did get warmer. But not uncomfortably so.

PMW1993 schrieb:

We are currently planning to install a 10 kW wood-burning stove in our open living/kitchen/dining area. It is intended only to create a cozy atmosphere and will be lit in the evening; it will not have a water heat exchanger. Question: is this size too large or acceptable?

I don’t think you can size a real fireplace stove small enough not to overheat a new build (especially one built to Passive House standard EH40!). Better to install a set of flat screens in the stove instead; any typical thirteen-year-old can program authentic flickering with surround sound on a Raspberry Pi.

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nordanney schrieb:

No, it’s not too big. But please don’t install storage stones anywhere. They blow the heat straight out through the chimney.

We also had a similarly large fireplace (but as a tunnel fireplace) in our last house a few years ago (KfW 55 standard). Open living/dining area of about 75m² (807 sq ft).
Yes, the room got warmer. But not uncomfortably so.

Thanks! That’s how it’s currently planned.

We have a KfW55 standard, an open living-dining-hall area of around 65sqm (700 sq ft), also with a vaulted ceiling, and I have to say our 4kW Olsberg stove is more than enough. We easily reach 25 degrees Celsius (77°F) with regular use. I think 10kW would be oversized if you have underfloor heating like we do.

Are there any experiences with KFW40?
Silly question, but can I run the 10 kW stove at only 5 kW by using less wood?