
HUUM Cliff Mini 4: a slender wall heater for saunas from 123 to 212 cubic feet
The HUUM Cliff Mini 4 is a wall mounted electric sauna heater made in Estonia for small rooms, rated at 3.5 kW for saunas from 123 to 212 cubic feet. Its narrow stainless steel column measures about 10.6 inches wide, 6.3 inches deep, and 38 inches tall and weighs 33 pounds. It needs very little clearance, so it fits where a floor heater would not. An internal air duct helps it heat up to 25 percent faster. The front ribs come off so you can stack the stones neatly, and it holds 133 pounds of stones directly against the heating elements for soft, lasting heat.
The box holds 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 4 boxes it needs on the page. A bucket and ladle set is optional. Want the control and stones in the same order? See the HUUM Cliff Mini heater package. The HUUM Cliff Mini 4 ships free from My Cozy Outdoors with No Sales Tax (except WY) and the full manufacturer warranty.
FAQ
What size sauna is this wall-mounted model for?
Small rooms from 123 to 212 cubic feet, per the features and specification tabs – one- or two-person saunas. It is the compact end of the CLIFF Mini line, built specifically for spaces where every inch of clearance matters.
How slim is it really?
The unit is 10.6 inches wide, only 6.3 inches deep, and 38.4 inches tall, and it mounts on the wall rather than the floor. With the small safety distances the features tab describes, it tucks into layouts no floor-standing heater could manage.
Are stones included, and which ones?
Stones ship separately – the heater takes four boxes of HUUM Stones 12 extra small (3-5 cm) stones, listed in the Required Stones add-on on this page, to fill its 133-pound capacity. That is an unusually large stone mass for this power class, per the description.
How is it controlled?
Through HUUM UKU controls, available in the Sauna Heater Controls add-on on this page – from the UKU Local digital control to Wi-Fi, Mirror, and Gold versions. Pick a Wi-Fi model and the HUUM app can start the sauna before you get home.
Does it heat up quickly for its size?
The features tab lists heating up to 25 percent faster thanks to an internal air duct. In the small, snug rooms this model is rated for, that means a short wait between switching on and a sauna at full temperature.
What warranty and electrical details apply?
A limited 5-year warranty excluding heating elements, with stainless steel construction made in Estonia. The amperage row in the spec table is blank on this page, so have your licensed electrician take the circuit specification from the installation manual.