The HUUM Cliff Mini 3.5 kW collection includes the Cliff Mini 4 heater and the Cliff Mini 4 heater package. This wall-mounted sauna heater suits small sauna rooms from 123 to 212 cubic feet. Its slim shape and small safety distances help it fit into a small sauna where a floor heater would not. Choose the bare heater if you already have a suitable control and stones, or the package when starting from nothing.


What is the HUUM Cliff Mini?

The Cliff Mini 4, rated 3.5 kW, is a wall mounted version of the Cliff made in Estonia. Its stainless steel construction is a slim column about 10.6 inches wide and 6.3 inches deep, with lift-off front ribs for stacking 133 pounds of stones directly on the heating elements. Its internal air duct helps it heat up to 25 percent faster. You can browse the HUUM range or compare our electric sauna heater collection.

A heater for one or two people

The Mini suits a one or two person sauna. For rooms over 212 cubic feet, consider the floor standing Cliff. The plain sided Steel Mini serves the same room range and is 6 inches deep. For another wall heater, the Drop range covers rooms from 106 to 530 cubic feet.

The control, stones and package

The bare Cliff Mini 4 heater needs a HUUM UKU control and four boxes of sauna stones added on the page. The Cliff Mini 4 sauna heater package includes the control, sensors, cables and 132 pounds of rounded olivine stones. Choose standard, Wi-Fi, Mirror or Gold control versions. The Wi-Fi version lets you start the sauna from your phone with the HUUM mobile app. The control mounts outside the hot room.

Why buy from My Cozy Outdoors?

We are an authorized HUUM dealer, and every listing carries the full manufacturer warranty. We can discuss your room size, heater and control by phone. Call us and we will talk it through.

Your questions answered

How small a sauna is the HUUM Cliff Mini for?

It suits rooms from 123 to 212 cubic feet, a one or two person sauna. It hangs on the wall, is 6.3 inches deep and needs very little clearance. For a larger room, consider the floor standing Cliff 6, and call us with your room measurements.

HUUM Cliff Mini or HUUM Steel Mini?

Both are 3.5 kW wall heaters for 123 to 212 cubic feet, with an air duct and 133 pounds of stones. The Cliff Mini has lift-off ribs and measures 10.6 inches wide and 6.3 inches deep. The plain sided Steel Mini measures 12.6 inches wide and 6 inches deep.

How do I stack the stones and add water on a HUUM Cliff Mini?

Lift the front ribs off with the two prop blocks. Follow the manual and take your time stacking 133 pounds of stones so none presses on a heating element. Users report ladling water a little at a time. Add four boxes on the page or choose the package.

Does the HUUM Cliff Mini come with a control and stones?

The bare heater includes prop blocks and a manual, with a HUUM UKU control and four stone boxes added on the page. The package includes the control, sensors, cables and 132 pounds of rounded olivine stones. Choose your control version on either Cliff Mini listing.