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Includes

What Is Included

Includes the product and configuration selected above. Hardware, controls, stones, venting, and accessories are not included unless specifically listed.

See How It Fits for required and compatible products.

How It Fits

How This Product Fits the System

What it is used for

An automatic water-dispensing accessory for Saunum heaters. It meters water onto the stones and requires the specified Saunum Leil control components, water connection, sensor, and installation setup.

What to plan

Start with the heater, chimney, or control model—not brand alone—then confirm the accessory part number and configuration.
Optional accessories are not required unless the selected product or installation manual says otherwise.
Replacement and installation parts must follow the current system manual, clearances, and local code.

Designed to work with

Model-specific replacements and compatible system components.

Saunum AIR Closed Basket Climate Equalizing Sauna Heaters, Black | 5KW 7KW 10KW Saunum lists AutoLeil for Saunum heaters; confirm the required Leil control generation before installation.
Saunum AIR L - Professional Sauna Heater with Air Equalization and Himalayan Salt Therapy | 10KW 13KW 15KW Saunum lists AutoLeil for Saunum heaters; confirm the required Leil control generation before installation.
Saunum AIR Stainless Open Basket Climate Equalizing Sauna Heater Saunum lists AutoLeil for Saunum heaters; confirm the required Leil control generation before installation.
2026 Saunum Air Perfect Air Blending Sauna Heater Package Saunum lists AutoLeil for Saunum heaters; confirm the required Leil control generation before installation.
Saunum Air L Stainless - Heat-Equalizing Sauna Heater with Himalayan Salt Saunum lists AutoLeil for Saunum heaters; confirm the required Leil control generation before installation.
Saunum Air Perfect 7 kW Heater Body Saunum lists AutoLeil for Saunum heaters; confirm the required Leil control generation before installation.
Saunum Air Perfect 10 kW Heater Body Saunum lists AutoLeil for Saunum heaters; confirm the required Leil control generation before installation.

Attachments

Current US Manual - Saunum Air IQ control unit - V_26_08.1

Current official Saunum US Air IQ control unit manual (V_26_08.1, August 2026), verified by Sauna Marketplace on 2026-08-19. Covers software 1.2.0: the redesigned control panel, the five-step fan button cycle, the fan-during-cooling view, and daylight-saving-aware scheduling. Rated 240V N~, heater power to 15.2 kW, to UL 875 and CSA C22.2 No. 164. This is the US document; the Saunum Leil manual is a separate EU control unit and does not apply to US installations.

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Manual

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Gallery

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Saunum Auto Leil, Auto Water Dispensing Unit for Saunum Heaters

Enhance your sauna experience with the innovative Saunum AutoLeil – a smart, self-learning device that automatically controls water supply to your heater, creating and maintaining an even sauna climate according to your preferences. In a modern relaxation sauna, all you have to do is simply enjoy a good, moist sauna – no need to throw water on the heated stones yourself.

Easy Install
Pre-set 3 different types of steam
Automatic humidity control mode
- sets the target room temperature (104–212 °F) and relative humidity (10–60% depending on temperature) to specific values.

Build Your Quote:

$1,441.00

Pipe

The Saunum Pre-Bent Pipe is required for use with the AutoLeil Water Dispensing System. This pipe is designed to integrate smoothly with the other components of the AutoLeil, ensuring optimal air flow and humidity regulation. Because the pipe is pre-bent, it allows for easier installation in various sauna room configurations.

Zero Interest Payments:

Pay with HSA/FSA:

Saunum

NEW! Smart water dispensing system

saunum auto leil

In a good sauna, humidity is just as important as temperature. Saunum AutoLeil is an additional device for the heater that automatically throws water on it and helps you control the humidity in the sauna room.

Saunum AutoLeil is designed for Saunum heaters and is controlled through the Saunum Leil control unit. With the Saunum Leil control panel, you can pre-set 3 different types of steam and enable the use of AutoLeil.

The automatic humidity control mode sets the target room temperature (104 to 212 °F) and relative humidity (10–60% depending on temperature) to specific values. In this mode, you cannot set the frequency or water quantity of the automatic dispensing.

The manual control mode sets the target sauna room temperature (104 to 212 °F), water quantity (valve opening time 0.3–4 sec), and water throwing interval (1–10 min) to specific values. In this mode, you cannot set the humidity level.

AutoLeil can also be set to ensure that the sauna user enters a comfortably moist sauna room at the designated time. When the sauna room is heated to the desired temperature, AutoLeil ensures water dispension to the heater according to desired settings.

The AutoLeil kit also includes a button with LED lighting for throwing water in the sauna room. It is also possible to turn automatic water throwing on or off with this button while in the sauna. The length of one water dispensing cycle is set to 30 minutes by default. It can be changed up to 12 hours, for example, for public saunas. Water can be taken from any household tap (up to 4 bar).

2023 (1)

Requirements/restrictions: Only works together with Saunum Leil control unit.

Included in the package: Controller, humidity sensor with cable (4 m), spray nozzle with tube fittings, electric water valve, water throwing button with cable (4 m).

Add-ons: Pre-bent tube for Primary or Professional heater, additional sauna interior water dispensing button if you want to connect more than one button.

Pre-bent tube (additional accessory)
Humidity sensor with cable (4m)
Spray nozzle with tube fittings
Controller
Water dispensing button with cable (4m)

In a good sauna humidity is just as important as temperature. Saunum AutoLeil is an additional device for the heater that automatically throws water on it and helps you control the humidity in the sauna room.

AutoLeil can also be set to ensure that the sauna user enters a comfortably moist sauna room at the designated time. When the sauna room is heated to the desired temperature, AutoLeil ensures water dispension to the heater according to desired settings

Easy Install
Pre-set 3 different types of steam
Automatic humidity control mode
- sets the target room temperature (104 to 212 °F) and relative humidity (10–60% depending on temperature) to specific values.
Manual control mode
- sets the target sauna room temperature (104 to 212 °F), water quantity (valve opening time 0.3–4 sec), and water throwing interval (1–10 min) to specific values.

Pipe Dimensions

Product Length	34.4″
Product Width	10.2″
Product Height	4.3″ (10.9)

Model	Auto Leil
Humidity adjustment range	5–60 %RH.
Water output period adjustment range	0.3–4 sec.
Automatic water dispensing interval adjustment range	1–10 min.
Automatic water dispensing function duration adjustment range	1– 30 min or 1–12 hrs settings.


Main Unit
Supply voltage	230V 1N
Length of outlet hose	4.9′
Dimensions	2.8″ × 2.8″ × 0.6″


Humidity Sensor
Length of cable	13.1′
Dimensions	1.2″ × 2″ × 0.8″