What is HUUM Core?
HUUM Core is a floor-standing heater with floor brackets from HUUM with 6.5-10.5 kW output and 88 lbs stone capacity.
Current heater
HUUM Core
Compare electric heaters
HUUM sauna heater specs
HUUM Core sauna heater specs and 3D room planner
Use this manual-checked HUUM Core product page to compare US and EU power options, adjusted room volume, clearances, UKU controls, rocks, and the shared HUUM 3D body before choosing the correct regional electrical package.
HUUM Core is a floor-standing heater with floor brackets from HUUM for 177-566 cu ft adjusted sauna rooms. Key planning facts: 6.5-10.5 kW output, 88 lbs stone capacity, and 80" minimum finished ceiling guidance, controller guidance: HUUM UKU certified controls, and separate US 240/208V 2~; EU 400V 3/N~ regional electrical rows that share the 3D body only for layout planning.
Design with HUUM Core Buy in North America at Sauna Marketplace
Quick answers
What sauna room size fits HUUM Core?
The published adjusted room-volume range is 177-566 cu ft. Add glass, tile, stone, brick, concrete, or log exposure before choosing the final kW row.
What clearances does HUUM Core need?
Plan 2.00" side/back clearance, 2.00" front clearance, and a 80" minimum finished ceiling check before placing benches or glass.
Which controller works with HUUM Core?
Current controller guidance: HUUM UKU certified controls. Match the controller, relay or power unit, and voltage to the selected kW row before ordering.
Are US and EU HUUM Core heaters the same for 3D planning?
HUUM Core uses the same 3D heater body/envelope in SaunaDesignPro for US and EU planning, but the electrical SKUs are separate. CORE 6 is 6.5 kW in the US table and 6 kW in the EU table; CORE 9 and CORE 11 match 9 kW and 10.5 kW nominal output across the regional tables. Match the final phase, voltage, breaker, cable, controller, listing, and warranty to the regional manual before ordering.
Can HUUM CORE go in a tight bay or inside a bench?
Yes — this is the CORE's specialty. The wood-clad shell carries roughly 2 inch (50 mm) combustible clearances, and the manual allows the heater to be partially or fully embedded in the sauna bench along its entire height, as long as it sits no deeper than the bench surface and air can move under the bench. That makes the CORE the go-to floor unit for narrow alcove bays and knee-wall pockets where 9-plus-inch-clearance heaters physically cannot fit. The shell is available in aspen, thermo-aspen, or alder to match the room's cladding.
Where should I start with HUUM Core?
Use the 3D designer to validate the room, benches, openings, clearances, and material schedule, then use Sauna Marketplace for the current package and buying path.
HUUM Core size and clearance table
| Variant | Power | Room volume | Dimensions | Rocks | Side/back | Front | Minimum ceiling | Controller |
|---|---|---|---|---|---|---|---|---|
| CORE 6CORE 6 | 6.5 kW | 177-318 cu ft | 15.2" W x 15.2" D x 32.7" H | 88 lb | 2.00" | 2.00" | 80" | HUUM UKU certified controls |
| CORE 9CORE 9 | 9 kW | 283-460 cu ft | 15.2" W x 15.2" D x 32.7" H | 88 lb | 2.00" | 2.00" | 80" | HUUM UKU certified controls |
| CORE 11CORE 11 | 10.5 kW | 354-566 cu ft | 15.2" W x 15.2" D x 32.7" H | 88 lb | 2.00" | 2.00" | 80" | HUUM UKU certified controls |
Best fit
- 6.5-10.5 kW HUUM heater family for 177-566 cu ft adjusted hot rooms.
- Floor-standing with floor brackets layouts where the heater footprint, front clearance, and bench approach are planned before ordering.
- 88 lbs stone capacity with HUUM UKU certified controls controller guidance.
- Rooms that can meet the 80" minimum finished ceiling check for the selected size row.
- Floor space, service access, guard rail planning, and cold-surface sizing should be checked with the full room layout.
Designer checks
- Size the room by adjusted volume, including the 3.3 cu ft per sq ft (1 m3 per 1 m2) for uninsulated brick, tile, glass, or similar surfaces rule where it applies.
- Validate side/back clearance 2.00", front clearance 2.00", and bench setback before finalizing benches.
- Check the 80" minimum finished ceiling against the room height.
- Carry the selected HUUM UKU certified controls package into the material schedule and heater placement notes.
- US electrical rows: CORE 9 draws 37.5A at 240V on a 50A breaker with 8 AWG Cu minimum; CORE 11 (10.5 kW) draws 43.75A, also on a 50A breaker with 8 AWG. Existing oversized feeds usually just need the breaker set to the manual value.
- If embedding the CORE in a bench, follow the manual conditions: immerse no deeper than the bench surface and keep air moving under the bench; the wood shell stays touch-safe but stone-surface clearances still apply above.
- Retail two-box stone packages (~66 lb) run lighter than the manual's 40 kg / 88 lb capacity — verify the stone fill against the manual so the elements stay fully surrounded.
Package notes
- Sauna heater body
- 88 lb; Rocks for HUUM Core
- Installation and operation manual
- Rocks for HUUM Core
Manual-backed facts
Source
HUUM Core US installation and operation manual
source: HUUM Core Installation and Operation Manual (240V US manual; checked May 18, 2026)
Mounting
Floor-standing with floor brackets
Floor-standing sizes use their own body height and top clearance.
Model numbers
CORE 6 / CORE 9 / CORE 11
Useful when the store name and manual model number are not identical.
Room volume range
177-566 cu ft
Use adjusted sauna volume after cold surfaces, not just geometric room volume.
Cold-surface adder
3.3 cu ft per sq ft (1 m3 per 1 m2) for uninsulated brick, tile, glass, or similar surfaces
The calculator applies the brand-family coefficient before selecting a heater size.
Minimum finished ceiling
80"
Computed from body height, floor clearance, top clearance, and the manual minimum room height.
Maximum room height
Not listed for these sizes
Verify with the selected manual when designing unusually tall rooms.
Electrical/control
US: 6.5 kW at 240V 2~; 208V 2~ derates to 4.8 kW, EU: 6 kW at 400V 3/N~ (3 x 10A); HUUM UKU certified controls / US: 9 kW at 240V 2~; 208V 2~ derates to 6.75 kW, EU: 9 kW at 400V 3/N~ (3 x 16A); HUUM UKU certified controls / +1 more
Use the selected kW row and SKU when matching breakers, phases, relays, and controller packages.
Critical differences
Certified control system required Add glass/tile/brick penalty before sizing
3 more notes shown below.
Regional electrical SKUs
US 240/208V 2~; EU 400V 3/N~
CORE 6 is 6.5 kW in the US table and 6 kW in the EU table; CORE 9 and CORE 11 match 9 kW and 10.5 kW nominal output across the regional tables.
3D model basis
Shared HUUM body/envelope for US and EU planning
HUUM Core US and EU rows use the same SaunaDesignPro 3D body/envelope for placement. Do not treat that as the same electrical SKU; use the selected regional manual for output, phase, breaker, cable, controller, listing, and warranty.
- Certified control system required
- Add glass/tile/brick penalty before sizing
- US and EU HUUM electrical packages use separate regional specs/listings; share the 3D body model only after confirming the exact market SKU
- HUUM publishes UKU Classic and UKU Glass/Mirror/Gold controller 3D resources; SaunaDesignPro places the selected UKU controller outside the hot room in 3D planning.
- CORE 6, 9, and 11 kW sizes use floor brackets and certified HUUM UKU controls.