Dry room
- Working rule
- ≈ 1 kW per m² of floor area
Guide 02
How much heater output does the room need?
A dry room and a far infrared room are worked out differently, and both start from the floor area. Here is the working rule we use, applied to our own published cabin footprints.
- MOQ
- 1 unit (accessories 50 pcs)
- Production
- ≈ 40 days
- Warranty
- 1 year
- Fabrication
- Non-standard sizes
01
The working rule
From the room rather than from the model name. As a working rule, a dry room takes roughly 1 kW per square metre of floor area, and a far infrared room roughly 0.8–0.9 kW per square metre.
It is a rule and not a table because it is a starting point: the figure is confirmed against the room as it will be built, and the model is fixed on the fabrication drawing before anything is produced.
| Room type | Working rule |
|---|---|
| Dry room | ≈ 1 kW per m² of floor area |
| Far infrared room | ≈ 0.8–0.9 kW per m² of floor area |
Far infrared room
- Working rule
- ≈ 0.8–0.9 kW per m² of floor area
02
Worked from our own cabins
Our dry sauna cabins are published with their footprints, so the rule can be applied to them directly. The output column is the rule above applied to that footprint.
| Model | Footprint L × W × H (mm) | Floor area (m²) | Heater class at ≈ 1 kW/m² |
|---|---|---|---|
| KA-4026 | 1600 × 1600 × 2100 | 2.56 | ≈ 2.6 kW |
| KA-4027 | 2000 × 1500 × 2100 | 3.00 | ≈ 3.0 kW |
| FY-4011 | — | — | — |
KA-4026
- Footprint L × W × H (mm)
- 1600 × 1600 × 2100
- Floor area (m²)
- 2.56
- Heater class at ≈ 1 kW/m²
- ≈ 2.6 kW
KA-4027
- Footprint L × W × H (mm)
- 2000 × 1500 × 2100
- Floor area (m²)
- 3.00
- Heater class at ≈ 1 kW/m²
- ≈ 3.0 kW
FY-4011
- Footprint L × W × H (mm)
- —
- Floor area (m²)
- —
- Heater class at ≈ 1 kW/m²
- —
Derived, not published: the footprint is ours, the ≈ 1 kW/m² rule is ours, and the multiplication between them is arithmetic. Read it as the class of heater the room falls into, not as a substitute for the drawing. FY-4011 has no published footprint, so its row is left blank rather than estimated.
03
Far infrared rooms
Our far infrared cabins are published by seating and timber rather than by footprint, so the rule is applied to the room you are building rather than to one of our rows. Bring the finished dimensions and the figure is worked from those.
The range runs 1 person to 4 person, in Canadian hemlock, red cedar or Finnish pine, with low-EMF and full-spectrum emitter options.
04
The heaters we supply
Sauna heaters are supplied with external controllers, powder-coated steel bodies and stone baskets.
One controller drives the generator and can also drive linked units, so a large commercial room can be run from a single panel.
05
Voltage, and the mistake that costs a board
A 220 V unit must not be connected to a 380 V supply: the over-voltage damages the heating element and the circuit board. A 380 V unit on a 220 V supply is the safe direction, but it runs well below its rated output.
The supply at the destination is confirmed against the order before production rather than assumed. European installations are commonly 230 V.
06
Checked before it is packed
Every electrical unit is powered up and run before it is packed. Earthing has to be correct, with a conductor of at least 4 mm².
- Electrical
- Powered up and run before packing
- Earthing
- Correct earthing, conductor of at least 4 mm²
- Records
- A pre-shipment inspection record is kept with the order
07
What to send
Two figures fix the heater:
- Floor area
- Finished length × width, in metres
- Room type
- Dry or far infrared — they are worked out differently
- Supply on site
- Voltage, phase and frequency as it will actually be wired
- Destination
- Country and port
Where this leads
The pages behind this guide.
Send the room. We will do the arithmetic.
The volume in cubic metres, the floor area, or just the dimensions you have — and the destination. We reply with the model, the drawing step and the lead time within one working day, Guangzhou time.