
HUUM Cliff 10.5: the biggest Cliff floor heater, for saunas up to 600 cubic feet
The HUUM Cliff 10.5 is the most powerful of the Cliff floor standing electric sauna heaters, rated at 10.5 kW for rooms from 353 to 600 cubic feet. Made in Estonia, this stainless steel column measures just 10.6 inches square and 38 inches tall. It weighs 37.5 pounds and needs only a few inches of clearance from the wall. An internal air duct helps it heat the room up to 25 percent faster. The front ribs lift off so you can stack the stones neatly, and it holds 165 pounds of stones directly on the heating elements for gentle heat and lasting steam.
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 10.5 heater package. The HUUM Cliff 10.5 ships free from My Cozy Outdoors with No Sales Tax (except WY) and the full manufacturer warranty.
FAQ
What size sauna can it heat?
This 10.5kW heater covers sauna rooms from 353 to 600 cubic feet, and the description notes it reaches temperature in a very short time for rooms in that range. Compare your room volume against the ranges in the CLIFF series to pick the right size.
Why is the CLIFF good for tight spaces?
It has a slim 10.6 by 10.6 inch footprint standing 38.4 inches tall, and the series is designed with remarkably small safety distances from the walls. That lets it fit saunas where a wider floor-model heater simply would not have the required clearance.
How fast does it heat up?
The features tab notes it heats up to 25 percent faster thanks to an internal air duct, and the description highlights rapid heat-up as a signature of this model given its 10.5kW capacity relative to the room sizes it serves.
What stones does it use?
It holds 165 pounds of stones and uses the smaller HUUM Stones 12 extra small (3-5 cm) size, listed as a five-box Required Stones add-on on this page. Removable ribs let you stack the stones more accurately around the heating elements during setup.
Does it come with a control?
No – it works with UKU controls, which are sold separately but offered directly on this page under Sauna Heater Controls, from the UKU Local digital control up to Wi-Fi, Mirror, and Gold versions that add HUUM app control from your phone.
Is there a safety rail available?
Yes. The Safety add-on section on this page offers the HUUM Rail C safety rail made for this series, plus a Reflect C reflector panel and a CLIFF/STEEL embedding flange, so you can add guarding hardware to the same order as the heater.
What warranty does it carry?
It carries a limited 5-year warranty excluding heating elements. The heater is stainless steel throughout, with industrial-quality elements, and like the rest of the HUUM line it is designed, engineered, and made in Estonia. Register your paperwork in case service is ever needed.