Mondex Klapi Wood Sauna Stoves

For smaller to medium saunas, the fully Finnish Mondex Klapi stands out with its round design, impressive stone capacity (154 lbs) for plenty of steam (löyly), and requires smaller clearances than many competitors, making it a perfect fit for tighter spaces.

Mondex Klapi’s three-channel combustion technology makes it heat quickly. Its firebox ceiling height is on the thicker side (8 mm), which extends the stove’s longevity.

With a 71% efficiency score, Klapi stove heats your sauna with less wood than many competitors, such as Harvia Linear 22 whose corresponding score is 62.3%.

Mondex was founded in 1992 in Ylivieska, Finland where they design, engineer, and make all their sauna products. The model name Klapi is Finnish and means chopped wood.

Capacities & Dimensions

For sauna rooms from 283 to 565 cubic feet
Nominal heating capacity: 13 kW
Stone capacity: 154 lbs
Efficiency: 71%
Dimensions: 18 W × 18 D × 29.5 H in (460 × 460 × 750 mm)
Heater weight without stones: 115 lbs

🔶 Not sure about sizing? Use our sauna heater size calculator.

Clearances to Combustibles

Ceiling clearance: 49 in (1 250 mm)
Side clearance: 10 in (250 mm)
Front clearance: 20 in (500 mm)
Rear clearance: 10 in (250 mm)

🔶 If you want to reduce these minimum safety distances, metal sheets and cement boards are viable options.

Check out a real-world example: How to Reduce Clearances
📄 Installation manual: Mondex Klapi

Features

2-year warranty (in home use)
Made in Finland
Certifications & quality marks: Finnish Key Flag, CE marking
2 color options: steel or black
Material: steel
Floor model with adjustable feet: 0–30 mm
Reversible glass door (left- or right-hinged)
Stone size: Ø 2–4 in (5–10 cm) AND 4–6 in (10–15 cm), half & half, required for operation & sold separately
Fireplace ceiling thickness: 8 mm
Flue connection location: top/rear
Flue connection diameter: 4.5 in (115 mm) (see our chimney kits)

🔶 Need sauna stones? As they’re hard to find in the US & expensive to ship, we’ve partnered with North Shore Sauna that sells proper sauna stones mined in Minnesota & offers free shipping for orders over $100. When you buy through us, we get a commission and you get a discount code: if you buy six or more boxes, you get $50 off with the code SAUNAIS50.

Complete your setup: Buy real sauna stones