HUUM CORE Electric Sauna Heater

The HUUM CORE is a 6.5, 9 or 10.5 kW electric sauna heater for rooms of 177–566 cubic feet, supplied as an unfinished body with a black or stainless trim ring. You finish the exterior yourself in tile, stone, glass or HUUM's wood panels, and it can be recessed into a bench. It holds 66 lb of stones and requires a HUUM UKU control, sold separately.

CORE is the heater you finish yourself. The same 12.2 in column takes a black metal case, no case at all, or alder, aspen or thermo-aspen cladding, and it can be recessed into a bench so only the stones show. It is the lightest heater in the range at 41.9 lb and holds the smallest stone charge, 66 lb.

• Customizable design with choice of different inlay finishes
• Allows personalization with ceramic tiles, stone, glass, or wood
• Can be completely embedded into a sauna bench
• Direct contact between stones and heating elements
• Stainless steel, industrial quality heating elements

These are not included. You need them before the sauna will run.

Marks as supplied by HUUM: CE. Requirements vary by jurisdiction — confirm with your building department and insurer before you install.

The HUUM CORE is rated for 177–566 cubic feet.

Measure width × depth × height in feet. Add extra volume for anything that soaks up heat rather than reflecting it — glass, tile, concrete, stone and exposed log all make a room behave larger than its raw measurement. Size to the larger number: an undersized heater never gets the room right, and running it flat out shortens the elements.

Work out your room with the sauna heater size calculator

The CORE body ships unfinished. Clad it yourself in tile, stone or glass, or fit a HUUM wood panel set.

• Mount to the clearances given in the installation manual.
• HUUM specifies rounded olivine stones, not the split-face stones other brands use. Load them loosely by hand so air moves freely, and never run the heater with an empty or tightly packed stone space.
• The UKU temperature sensor mounts inside the hot room on the wall above the heater. Sensor position changes how the room behaves more than any setting on the panel does.
• Pour small ladlefuls of clean water onto the stones only — never onto the body or the elements. Mix any scented oil into the bucket first.
• This is an LTL freight item. It arrives curbside on a pallet — note any damage on the delivery receipt before you sign.

Does the HUUM CORE include a control?

No, and it cannot run without one. Every HUUM electric heater ships with no controls on the body — you add a HUUM UKU control, sold separately, which mounts outside the hot room and lets you bring the sauna up to temperature before you walk in.

What stones does the HUUM CORE take?

Rounded olivine, 5-10cm — 2 boxes, 66 lb in total. HUUM specifies rounded stones rather than the split-face stones other brands use: they suit the open HUUM basket and give a milder steam. Stones are not included.

Is the HUUM CORE certified for use in the US?

HUUM supplies it with these marks: CE. Confirm requirements with your building department and insurer before you install, and ask us if you need the certification documents.

HUUM-CORE-Sauna-Heater-IOM.pdf

HUUM-Element-Requirements.pdf

HUUM Certificate of Compliance.pdf

HUUM-Warranty.pdf