
HEART OF FIRE
This is a space to welcome visitors to the site. Grab their attention with copy that clearly states what the site is about, and add an engaging image or video.
.png)
pure and timeless warmth

HEART OF FIRE
This is a space to welcome visitors to the site. Grab their attention with copy that clearly states what the site is about, and add an engaging image or video.
pure and timeless warmth
.png)
We build fire pits from edge to edge.
mainly on my own
Ecological pioneer
At the heart of low emissions
High-quality and truly ecological fireplaces, tailor-made.
High-
classy
and truly
ecological
fireplaces
tailor-made
At the heart of low emissions
Fire has always been a part of the northern lifestyle. It provides warmth, brings people together and calms the mind for a moment. At Tulisydän, we have been manufacturing fireplaces and heaters since 1989, combining Finnish craftsmanship, ecology and timeless design.
We specialize in fire pits that burn particularly cleanly and efficiently.
We are driven by the desire to create warmth that feels good – at home, in the sauna, and in the environment.
HEART OF FIRE
since 1989
Fire has always been a part of the northern lifestyle. It provides warmth, brings people together and calms the mind for a moment. At Tulisydän, we have been manufacturing fireplaces and heaters since 1989, combining Finnish craftsmanship, ecology and timeless design.
We specialize in fire pits that burn particularly cleanly and efficiently.
We are driven by the desire to create warmth that feels good – at home, in the sauna, and in the environment.
.jpg)

Firebox Ek0 fireplace core
At the heart of low emissions
The Firebox ek0 fireplace insert is a technical innovation developed by Tulisydä, which maximizes combustion efficiency and minimizes emissions.
Firebox
Ek0
fireplace hearth
At the heart of low emissions
The Firebox ek0 fireplace insert is a technical innovation developed by Tulisydä, which maximizes combustion efficiency and minimizes emissions.
Firebox is the result of years of research and development.
It was born from the need to create a combustion chamber for heat-saving fireplaces with the lowest possible emissions and efficiency. Its design has utilized international research data and collaboration with Tampere University of Technology, the University of Stuttgart and the Finnish fireplace industry.
The result is an innovation that optimizes combustion and minimizes emissions – for the benefit of the environment and the user.
A good fire burns brightly.
The Firebox fireplace insert controls combustion so that the wood burns cleaner and more efficiently.
Fewer emissions, more heat – on nature's terms.


OUR OPERATING PRINCIPLES
Every fireplace and heater manufactured by Tulisydämi is designed according to the space and user's needs.
The manufacturing is based on careful design and long-lasting materials.

At the heart of low emissions
Our destinations
The Firebox ek0 fireplace insert is a technical innovation developed by Tulisydä, which maximizes combustion efficiency and minimizes emissions.
Fire pits,
that
will be done
to endure
At the heart of low emissions
We manufacture and install fireplaces and heaters for homes, businesses and public spaces. We have designed and implemented all kinds of fireplaces for traditional log houses as well as modern architecture, large complexes and unique small homes.
We are chosen by those who value – extreme cleanliness, uncompromising quality, and individual design. Each of our implementations is made with care, respecting the environment, and always tailored to the customer's needs.
Fire pits that are made to last
We have designed and implemented all kinds of fireplaces for traditional log houses as well as modern architecture, large complexes, and unique small homes.
We are chosen by those who value – extreme cleanliness, uncompromising quality, and individual design. Each of our implementations is made with care, respecting the environment, and always tailored to the customer's needs.

We are trusted by:

![64635bd73c547e7eabe3cdb4_loyly-white[5643]_edited.png](https://static.wixstatic.com/media/6426cb_33fb0e49c2404b3ba52fa558cba3b74b~mv2.png/v1/fill/w_980,h_376,al_c,q_90,usm_0.66_1.00_0.01,enc_avif,quality_auto/64635bd73c547e7eabe3cdb4_loyly-valkoinen%5B5643%5D_edited.png)


We are trusted by:
![64635bd73c547e7eabe3cdb4_loyly-white[5643]_edited_edited.png](https://static.wixstatic.com/media/6426cb_33fb0e49c2404b3ba52fa558cba3b74b~mv2.png/v1/fill/w_980,h_376,al_c,q_90,usm_0.66_1.00_0.01,enc_avif,quality_auto/64635bd73c547e7eabe3cdb4_loyly-valkoinen%5B5643%5D_edited_edited.png)




At the heart of low emissions
The Story of the Fireheart
The Firebox ek0 fireplace insert is a technical innovation developed by Tulisydä, which maximizes combustion efficiency and minimizes emissions.
Heart of Fire
story
At the heart of low emissions
Tulisydän was founded in 1989 by architect and fireplace researcher Heikki Hyytiäinen. Heikki, who had worked on a new type of heat-saving fireplace at Tiilikeskus Oy, founded the company to develop an extremely clean-burning and heat-saving eco-fireplace. The first prototypes were completed in the mid-1990s.
We build fire pits from edge to edge.
mainly on my own
Tulisydän was founded in 1989 by an architect and fireplace researcher.
By Heikki Hyytiäinen. A new type of energy-saving fireplace
Heikki, who worked at Tiilikeskus Oy, founded the company to develop an extremely clean-burning and energy-saving eco-fireplace.


At the heart of low emissions
Iiro Sahramaa
The Firebox ek0 fireplace insert is a technical innovation developed by Tulisydä, which maximizes combustion efficiency and minimizes emissions.
IRO SAFFRON
At the heart of low emissions
The story of Fireheart continues.
Based on the technology developed by Heikki Hyytiäinen, Iiro Sahramaa is taking the company forward – developing fireplaces and heaters that are more ecological, more sustainable and more visually beautiful.
The story of Fireheart continues.
Based on the technology developed by Heikki Hyytiäinen, Iiro Sahramaa is taking the company forward – developing fireplaces and heaters that are more ecological, more sustainable and more visually beautiful.
.jpeg)
The story of Fireheart continues.
Based on the technology developed by Heikki Hyytiäinen, Iiro Sahramaa is taking the company forward – developing fireplaces and heaters that are more ecological, more sustainable and more visually beautiful.
.jpeg)

fireplace or stove, modern
or traditional
Contact us and let's discuss YOUR FIREPLACE DREAM.

Let's Work
Together
.png)
© 2025 Firebox Heat Oy