Harvia's wood-fired pillar heater, launched in October 2024 and headlining its 75th anniversary year.
P.02Flagship
Cilindro WKPC16 / WKPC20
Specs from harvia.com and Harvia Plc materials, in US units. Check the current Harvia manual before you wire or install.
The Cilindro pillar format, now wood-fired: about 265 lbs of stones, a glass hatch for firelight, and what Harvia calls a unique rear ventilation duct. A new product, not a refresh.
The wood-burning Cilindro is a new product. Harvia completed its development in Q3 2024, launched it to the public in October 2024, and started sales in early 2025; its January 30, 2025 release named it the first highlight of the company's 75th anniversary year. It takes the cylindrical pillar of the electric Cilindro and rebuilds it as a wood-fired heater: ~265 lbs of stones, a stainless steel shell, a cast-iron firebox with a glass hatch showing flame through the column, and a rear ventilation duct that Harvia says speeds up heating. Finnish Key Flag product, designed and built in Harvia's Muurame factory.
Off-grid cabins, rural residential wood-fired builds, destination commercial properties where the visible flame is part of the guest experience. Lots that are already zoned for wood-burning appliances and owners who know how to source a year of firewood and pay a chimney sweep once a year.
Editorial analysis for context, not a purchase recommendation.
Room sizes in cubic feet, stone loads in pounds.
From earnings calls, investor presentations, annual reports, and the Harvia catalog.
“One highlight of this milestone year is the expansion of the popular Harvia Cilindro series to include wood-burning heaters. Designed and manufactured in Finland, the heater features a generous stone capacity for excellent steam production, a unique ventilation duct for fast heating, and a durable stainless-steel shell that ensures quiet operation.”
Harvia Plc press release, 75th anniversary announcement
Official product launch statement
“The Harvia Cilindro wood-burning pillar heater is a Finnish Key Flag product, designed and manufactured in Harvia's heater factory in Muurame, Finland with over 70 years of experience.”
harvia.com Cilindro wood-burning product page
Made-in-Finland positioning
“We want to be an active market maker to grow the sauna market and create exciting innovations in sauna solutions, products, accessories, and digital services to deliver great sauna experiences.”
CEO Matias Järnefelt, Harvia strategy release issued at its Capital Markets Day 2024
Strategic positioning preceding the wood-burning Cilindro and MyHarvia Sensor launches
“The company is headquartered in Muurame, Finland, adjacent to its largest sauna and sauna component manufacturing facility.”
Harvia Q4 2025 press release
On the Muurame facility where the Cilindro wood-burning is produced
Check each note against the current Harvia manual and your local code.
N.01
Electric PC-series and wood-burning WKPC-series are different products inside the same visual family. Different firebox (none vs cast-iron), different base, different chimney requirements, different shell internals. Retailers sometimes cross-list. Always confirm the model code (PC-series and US HPCS part numbers = electric; WKPC16/WKPC20 = wood) before ordering.
N.02
Harvia says the ventilation ducting at the back of the heater helps heat the sauna quickly and efficiently.
N.03
The Cilindro wood-burning ships with Harvia's native 4.5" flue collar. North American code typically requires 6" minimum insulated Class A chimney. Use Harvia's specified flue components and adapters through a qualified installer; skipping certified chimney hardware on a wood-fired heater is both a code violation and a real fire-safety risk.
N.04
A large mass of new stones benefits from a gradual introduction to high heat. Harvia's installation guidance calls for preliminary moderate burns before full-intensity sessions. Stones that have not been seasoned can pop or crack during the first high-output burns.
Product, detail, and technical images from the Harvia Media Bank.
Images: Harvia Media Bank, courtesy of Harvia Plc, unless the caption says otherwise.
Cilindro PC series (electric)
Harvia's pillar-format electric heater with an open stainless stone lattice
Pro 20 / Pro 36 (WK-series)
Harvia's wood-burning stoves for large saunas
Product data comes from Harvia Plc investor materials, earnings call transcripts, harvia.com, and harviagroup.com. Quotes carry their source where a public one exists. SaunaNews is not affiliated with Harvia Plc; this page is a product record for news coverage, not a sales page. Spot an error or an outdated spec? Tell the newsroom .
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