Choosing the right heater for your sauna
Harvia Top Steel M60
6.0 kW Electric
Best For
First-time sauna owners or outdoor saunas on a budget
First-time sauna owners or outdoor saunas on a budget
Heat-Up Time
~25–45 min (based on 5–8 m³ sauna)
~25–45 min (based on 5–8 m³ sauna)
Max Temp Up to 90°C+
Sauna Size 5–8 m³
Power Source 230V 1-phase / 400V 3-phase
Controls Built-in timer & thermostat
Stones ✓ Included (25 kg)
Standout Feature
Compact, affordable & simple – no separate controller needed
Compact, affordable & simple – no separate controller needed
Sentiotec Viking
9.0 kW Electric
Best For
Families, frequent users and larger cabins that need fast, powerful heat
Families, frequent users and larger cabins that need fast, powerful heat
Heat-Up Time
~20–35 min (based on 5–8 m³ sauna)
~20–35 min (based on 5–8 m³ sauna)
Max Temp Up to 105°C
Sauna Size 9–14 m³
Power Source 230V 1-phase / 400V 3-phase
Controls Built-in digital control
Stones ✓ Included
Standout Feature
Highest power electric option – heats large spaces fast with serious performance
Highest power electric option – heats large spaces fast with serious performance
Harvia M3 Wood-Burning Set
13 kW Wood-Fired
Best For
Sauna purists, off-grid setups and anyone who loves the ritual of a real wood fire
Sauna purists, off-grid setups and anyone who loves the ritual of a real wood fire
Heat-Up Time
~20–50 min (based on 5–8 m³ sauna)
~20–50 min (based on 5–8 m³ sauna)
Max Temp Up to 110°C+
Sauna Size 4.5–13 m³
Power Source Wood – no electricity
Controls Manual – real fire
Stones ✓ Included (40 kg) + chimney
Standout Feature
Glass door with flame view – the full traditional Finnish experience, complete package
Glass door with flame view – the full traditional Finnish experience, complete package
