01
Start.
Switch on M4 remotely before planned use.
M4
M4 thermal.
Start warming before you arrive.
A warmer starting condition.
Start M4 remotely before use, or run it during suitable periods to maintain baseline warmth.
In both modes, M4 supports a warmer starting condition before the stove is used.
The stove completes the lift to bathing temperature and remains responsible for stones, steam, and löyly.
How M4 works
Start.
Baseline.
Stove.
Bathe.
02
Baseline.
Run M4 during suitable periods to maintain lower-temperature warmth.
03
Stove.
The stove brings the cabin from its starting condition to bathing temperature.
04
Bathe.
The stove remains responsible for stones, steam, and löyly.
Heat routing
Direct heat where it is useful.
Heat supply and sauna use may happen at different times. M4 retains a safe heat path whenever the sauna or another suitable load cannot use it.
Sauna shell
A warmer starting condition before the stove is used.
Changing room
Baseline warmth for the changing room.
Water / thermal loop
Recovered heat can support a pool or another suitable thermal load.
Two heat systems
Start M4 remotely.
Bathe with the stove.
Heat source
A controllable source of lower-temperature heat.
M4
Control, retention, and routing of that heat as optional baseline warmth.
Stove
Bathing temperature, stones, steam, and löyly.
Controls
Independent controls manage remote operation, airflow, sensors, and safe heat routing.
M4 does not remotely start or control the sauna stove.
Thermal study
Readiness basis.
The thermal readiness study compares a cold start with remote pre-warming and maintained baseline warmth. It records preparation time and total electricity use across each starting condition.
View thermal readiness study.Available heat
Use energy where it has more than one purpose.
M4 works with a controllable source of useful heat. Where useful electrical work produces that heat, the same energy can support both the work and a real thermal demand.
Recovered compute heat is one available implementation. It does not define M4 or its customer value.
Application
Where M4 fits.
M4 is relevant where its heat has a useful destination: the sauna shell, changing room, water, or another suitable thermal load.
Heat source, controls, airflow, safe heat rejection, acoustics, and service access are defined for each installation.