
HUUM Cliff 6: a 10.6 inch square floor heater for saunas from 176 to 353 cubic feet
The HUUM Cliff 6 is a floor standing electric sauna heater made in Estonia, rated at 6 kW for rooms from 176 to 353 cubic feet. It is the slimmest of HUUM’s floor columns, with a stainless steel tower that measures just 10.6 inches square and 38 inches tall. It weighs 35 pounds and needs only a few inches of clearance from the wall. An internal air duct heats the room up to 25 percent faster. The front ribs lift off so you can stack the stones neatly. It holds 165 pounds of stones directly against the heating elements for gentle heat and steam that lasts.
You get the heater, two prop blocks for removing the ribs, and the manual. It needs a HUUM UKU control to run, and you add that on the page. Choose the Wi-Fi version and you can start the sauna from your phone. Sauna stones are sold separately, so add the 5 boxes it needs on the page. A safety rail, a reflector panel, an embedding flange, and a bucket and ladle set are optional. Prefer the control and stones in one order? See the HUUM Cliff 6 heater package. The HUUM Cliff 6 ships free from My Cozy Outdoors with No Sales Tax (except WY) and the full manufacturer warranty.
FAQ
What size sauna does this 6kW model heat?
Rooms from 176 to 353 cubic feet, per the features and specification tabs. It is the entry size in the slim CLIFF series, which runs up to 10.5kW, so measure your room volume in cubic feet and pick the matching range.
Will it fit a really tight sauna layout?
That is its specialty. The footprint is just 10.6 by 10.6 inches on a 38.4-inch column, and the description notes safety distances from the walls come down to about 12 cm on the larger models – so it slots into rooms a wide heater cannot.
How do the stones work on this heater?
It holds 165 pounds of the smaller HUUM Stones 12 extra small (3-5 cm) stones, sold as a five-box Required Stones add-on on this page. Removable ribs and the included prop blocks let you stack the stones accurately around the heating elements.
What control does it use?
HUUM UKU controls, sold separately but offered right on this page under Sauna Heater Controls – UKU Local, Wi-Fi, Mirror, or Gold. A Wi-Fi version adds HUUM mobile app operation, so the slim heater can still be started from your phone.
Is guarding hardware available for it?
Yes – the Safety add-on section on this page lists the HUUM Rail C safety rail for this series, the Reflect C reflector panel, and the CLIFF/STEEL embedding flange, so protective hardware can ride along on the same order as the heater.
What warranty and electrical notes should I know?
It carries a limited 5-year warranty excluding heating elements and is made in Estonia from stainless steel. The amperage row in this page’s spec table is blank, so have your licensed electrician size the circuit from the installation manual before rough-in.