Infrared panelsiSwaps the electric heater for wall-mounted carbon-fibre infrared panels (400×1000 mm), fitted evenly behind the benches and starting 10 cm above the bench top. The wooden backrest is removed.Replaces the heater · gentle, low-voltage
Fascia IR panelsiAdds horizontal infrared panels (1000×400 mm) along the front fascia of the upper bench, spread evenly with small gaps. ฿5,200 per panel.On the bench front · ฿5,200 per panel
Red light therapyiAdds red-light therapy to the infrared panels — a warm red glow inside the cabin, often paired with infrared for skin and recovery benefits. Infrared saunas only.Red glow · infrared only
Power supply
Room 7.6 m³ — 9 kW recommended
Heater size (kW)
Heater style
Heater position
Front wall
Back walliStands the heater against the back wall. The back bench is cut around it — shortened at a corner, divided into two runs when centred.
A full-width back window with no bench behind it glazes the wall to the floor — there's nothing to stand a heater against. Add a back bench, or use a smaller window.
Touch screen sideiWith the heater centred, choose which side the heater/light touch-screen control panel sits.
Heater guardiA slatted wooden guard rail around the heater — made from the same wood as your interior. Included at no extra cost.Wooden guard · matches your wood · included
Heater / light control panel
Control panel included with the Harvia Spirit heater.
Heater / light control panel position
Mounted inside on the wall opposite the heater.
Wall
With the heater centred, choose which side wall the control panel mounts on.
Wall
Mounted on the front, opposite the heater.
Ventilation
Ventilation position
Set automatically to the opposite side of the heater.
The vent grille sits about 30 cm below the ceiling.
