The Harvia Cilindro Wood-Burning Heater – Exceptional Steam for Every Sauna

The Harvia Cilindro wood-burning heater is our twist on the popular Harvia Cilindro electric pillar heater. This heater has a sleek, pillar-style design that looks stunning in any sauna environment.

Available in two sizes*, the Cilindro heater is designed to suit both small and large saunas. If your sauna is closer to the upper end of the heater’s capacity, opting for the larger model is recommended. This not only ensures the sauna reaches the desired temperature efficiently but also extends the heater’s lifespan by reducing strain. If a heater is too small for the sauna, it has to work extra hard to heat the space, which can wear it out faster.

You can use our Sauna Calculator to roughly estimate the size of your sauna. If in doubt, contact your local Harvia dealer for support.

• The Cilindro 16 is ideal for compact saunas ranging from 6 to 13 m³. Perfect for home saunas that typically accommodate 2-3 people, this model heats up quickly, so you can enjoy a sauna session without long wait times.

• The Cilindro 20 is designed for medium-sized saunas, between 10 and 24 m³, making it a great choice for larger home or commercial saunas.

Both models boast an impressive 120 kg stone capacity, ensuring ample and gentle steam that enhances relaxation and well-being. The larger stone volume allows the heater to retain heat longer, providing a smooth and enjoyable sauna experience.

*Currently the Cilindro 16 is available in the US. The Cilindro 20 will be available in the US later in 2025.

The Harvia Cilindro wood-burning heater is designed for long-lasting durability and ease of maintenance. Proudly designed and manufactured in Finland, it carries the Key Flag label – a mark of Finnish quality and authenticity. The Cilindro wood-burning heater is built to last, featuring a durable double-layer design that helps retain heat efficiently while protecting the heater’s components from wear and tear, making it a reliable choice for long-term use.

Regularly maintaining your heater is important to its longevity. Maintaining the Cilindo wood-burning heater is simple, thanks to easily replaceable air control panels and a convenient built-in ash pan that allows for quick and easy cleanup after each use.

• Fast heating for an exceptional sauna experience

• Elegant design that suits any sauna environment

• Durable stainless-steel structure for long-lasting performance

• Large 120 kg stone capacity ensures ample, gentle steam

• Smart accessories that enhance both function and appearance

• Proudly designed and made in Finland with the Key Flag symbol as a mark of Finnish quality and authenticity

To ensure your Harvia wood-burning heater continues to perform optimally, a regular maintenance routine is essential. Here’s a simple checklist to keep everything running smoothly:

Check the air control panels (Every 6 months)

Inspect the air control panels for any signs of wear or damage. These panels are important to maintain efficient airflow from the heater, and they are easily replaceable.

Clean the ash pan (After every use)

After each sauna session, it's important to safely dispose of the ashes. First, wait until the ashes have completely cooled - this can take a few hours or overnight. Always wear gloves and use a metal container to collect the ashes. Once they’re cool, you can either use them in your garden as a natural fertilizer or dispose of them with your regular rubbish, ensuring you follow local disposal guidelines. Don’t forget to clean the ash pan afterward to keep your heater in good condition and ready for your next session.

Inspect the stones (Annually)

Check the stone capacity to ensure there is no buildup of soot or other debris. If stones are cracked or damaged, replace them to maintain optimal heat retention and steam production.

Check the chimney (Annually)

Inspect the chimney and smoke pipe for any signs of soot buildup or blockages. Regular maintenance ensures optimal airflow and safety for your sauna heater. Clean the chimney if necessary to ensure proper ventilation and safe operation. To clean your sauna chimney, ensure it's cool, inspect for debris, use a chimney brush with extension rods to scrub from top to bottom, collect the soot, and check for blockages, disposing of debris safely afterward. Safety Tip: If you notice excessive creosote buildup or difficulty in cleaning, it’s always best to call a professional chimney sweep.

Examine the heater’s exterior (Every 6 months)

Inspect the heater’s exterior for any signs of rust, cracks, or other damage. Touching up paint and checking for structural issues will help prolong the life of the heater.

Check the water heater if installed (Every 6 months)

If you have a water heater accessory, check the water tank for any leaks or build-up. Clean and maintain the water heater to keep it working efficiently. To clean a sauna water heater, first ensure it's turned off and cool. Drain any water from the heater and inspect for mineral buildup, especially if you have hard water. Wearing gloves, use a soft cloth or sponge with mild detergent to clean the interior. For heavy buildup, apply a mixture of vinegar and water or a descaling solution, letting it sit for 1-2 hours before scrubbing. Rinse thoroughly to remove any cleaning solution, check for leaks or damage, then reassemble the heater.

By following this simple checklist, you can ensure your Harvia wood-burning heater stays in excellent condition, providing reliable performance and the best sauna experience every time you use it.