Full steam ahead towards circular economy

A simple and powerful way to restore body and mind, sauna has been part of Northern European culture for over 4,000 years. Harvia, the globally leading Finnish sauna and spa manufacturer, makes its sauna heaters from Outokumpu stainless steel with high recycled content. This choice reflects Harvia’s commitment to place sustainability at the heart of the sauna experience.

In 2025, Harvia has named Outokumpu its Supplier of the Year, recognizing a partnership that combines product quality, supply reliability, cost efficiency and sustainability in challenging and rapidly changing markets conditions.

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Global spa and sauna expertise

With over 70 years of experience, Harvia is the world’s leading sauna manufacturer. It produces over 200,000 heaters and 20,000 saunas annually and exports them to over 80 countries. 

In Finnish culture, sauna and respect for nature have long gone hand in hand. More than a place to relax and bathe, the sauna is a space for healing, reflection and community. For Harvia, this connection makes environmental responsibility central both to its philosophy as a company and to the sauna experience it creates. Reliable performance, safety, design, and innovative products made to last are all part of that vision.

Stainless steel is a natural fit: it offers excellent heat and corrosion resistance, lends itself to elegant product design, and delivers the durability required in demanding sauna environments. Since 2017, Harvia’s factory in Muurame has used only Outokumpu stainless steel, made from over 90% recycled material

 

Production of Cilindro sauna heater by Harvia 

 

Pride in quality and tradition

Harvia draws on a 70-year heritage as a family business, rooted in values that continue to shape the company today. By designing and manufacturing most of its products in-house, Harvia helps ensure both high quality and cost-efficiency. From the early days of the company, its founder Tapani Harvia was committed to making equipment built to last. That same long-term thinking is reflected in Harvia’s environmental focus, which extends from design and production to logistics, use and recycling

Harvia's environmental policy is based on the ISO 14001 standard. The company requires from all wood material suppliers a valid chain of custody certificate. Harvia is also an active expert studying and instructing the cleaner burning of wood. Low-emission Harvia GreenFlame wood-burning heaters were introduced already in 2009. No wonder Harvia expects the highest standards from its supplier of stainless steel, too.

Harvia Cilindro Sauna heater in Kämp

 

Driving the circular economy

With sustainability at its core, Harvia’s use of stainless steel goes beyond product longevity – it drives a circular economy. Stainless steel is 100% recyclable and can be melted down and reused infinitely, making every sauna part of a sustainable cycle. All stainless steel leftovers produced at Harvia’s Muurame factory are processed by the recycling company Kuusakoski. Outokumpu then uses the recycled material to create new stainless steel products. 

Using the world's most sustainable stainless steel reduces Harvia's carbon footprint considerably – the equivalent of driving over 32 million kilometers by car. The manufacturing process of stainless steel at Outokumpu has 70% lower emissions than the industry average. 

Production of Cilindro sauna heater by HarviaAll stainless steel leftovers from production are collected and eventually returned to Outokumpu for re-use.

Known for their quality and reliability, Harvia heaters typically last up to 15 years in private use, making them a sustainable choice in themselves. At the end of their service life, they are fully recyclable.  

 

 

Outokumpu is Harvia 2025 Supplier of the Year

Each year, Harvia selects one Supplier of the Year from among hundreds of domestic and international partners. In 2025, that recognition goes to Outokumpu. The award reflects successful collaboration and strong performance in both operational and strategic cooperation, as well as a meaningful overall impact on Harvia’s supply chain and business. This year’s key selection criteria included high product quality, the ability to manage supply chain risks, cost efficiency and sustainability.

“On behalf of myself and the entire Harvia Group, a big thank you. By many measures, the past year has been strong, and despite challenging conditions, the entire 2020s have been highly successful for our mutual business,
Through seamless collaboration and mindset of continuous improvement, we are well positioned to meet future market challenged together”

Matti Kivimäki, Purchasing Director, Harvia

Harvia’s saunas merge tradition with innovation. They stand as a model of how cultural heritage can lead the way in the green transition. Better materials, lower emissions and improved energy efficiency are all helping evolve the sauna experience for modern sauna-goers.

Image gallery

Production of Cilindro sauna heater by Harvia

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