 
 

            
              
              Description
            
            
          
          Thanks to its clean, compact design, the UTU wood‑burning sauna heater fits easily into saunas of various sizes. Made from durable black steel and fully cladded for a modern appearance, the UTU combines rugged construction with a sleek, contemporary aesthetic.The door of the stove can be modified to open either on the left-or right-hand side, giving more options for the placement of this heater.
Correct amount of stones to be purchased separately.
We recommend 60kg (10-15 cm) of either olivine diabase or vulcanite sauna stones.
Browse sauna flue kits and chimney parts.
Key Features of the Tulikivi Utu 20
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Finnish design and production quality with reliable performance. 
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Heater output: 20 kW, capable of heating sauna rooms from 8 to 20 m³. 
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Fully cladded in black steel, with steel frame. 
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Generous stone compartment (up to 60 kg) for rich, long‑lasting steam. 
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Adjustable feet / leveling legs included (50 mm adjustment) for stable installation. 
Technical Specifications
| Specification | Details | 
|---|---|
| Power output | 20 kW | 
| Maximum wood load | 8 kg | 
| Size of sauna room | 8‑20 m³ | 
| Height | 920 mm | 
| Weight (without stones) | 65 kg | 
| Maximum stone capacity | 60 kg | 
| Adjustment legs | 50 mm | 
Safety Distances
| From | Minimum Clearance | 
|---|---|
| Side walls | 200 mm | 
| Front (footboard/in front of heater) | 1000 mm | 
| Ceiling | 1000 mm | 
| Floor | 40 mm | 
Flue connection details:
| Location of smoke outlet, Rear (from the floor to centre of the outlet) | 770 mm | 
| Location of smoke outlet, Top (from the rear edge to the middle of the outlet) | 175 mm | 
| Smoke outlet diameter | 115 mm | 
            
              
              Technical Specification
            
            
          
          Technical Specification
Dimensions:
| Width | 500 mm | 
| Depth | 600 mm | 
| Height | 920mm | 
| Weight | 270 kg | 
| Firebox width | 300 mm | 
| Firebox depth | 400 mm | 
Heating Technology:
| Heater output | 20 kW | 
| Amount of wood | 8 kg/h | 
| Size of sauna room | 8-20 m3 | 
| Flue class | T600 | 
| Amount of stones | 60 kg | 
Safety Distances:
| Side and back | 200 mm | 
| Front | 1000 mm | 
| To the ceiling | 1000 mm | 
| To the floor | 40 mm | 
Flue connection details:
| Location of smoke outlet, Rear (from the floor to centre of the outlet) | 770 mm | 
| Location of smoke outlet, Top (from the rear edge to the middle of the outlet) | 175 mm | 
| Smoke outlet diameter | 115 mm | 
            
              
              Installation
            
            
          
          
            
              
                 Warranty
              
              Warranty
            
            
          
           Warranty
              
              Warranty
             
       
      

 
               
               
               
               
               
               
               
               
              

 
       
       
               
               
               
              



 
       
       
       
     
     
     
                 
                 
                 
                 
                 
                 
                 
                 
                 
                 
                 
                 
                 
                 
                 
                