The HUUM STEEL 9.0STU Pkg is a HUUM electric sauna heater made in Estonia, 9 kW, about 283–460 cu ft. STEEL is the slim floor pillar with an air tunnel. Looks narrow; still takes a serious pile of smaller stones.
How it heats
Electric elements inside a stone cage. You need a HUUM UKU (or compatible) control — there are no dials on the heater. Round stones are what HUUM recommends. Licensed electrician, heat-resistant cable, no guessed breaker size from us. Glass and masonry: add equivalent volume when you size kW.
What’s included
HUUM STEEL 9.0STU heater
STU/STUX package options on this listing name UKU Local or UKU Wi-Fi in black or wood — that control is part of the package choice.
STU is the dealer package code for heater + stones + UKU. Confirm today’s packing list with our team if you need it in writing.
Specs
Brand: HUUM (Estonia)
Output: 9 kW
Approx. room volume: 283–460 cu ft
Mount: Floor
Control: UKU (sold separately unless this is a UKU package)
Stone load (manufacturer): about 330 lb / 150 kg, 1.2–2 in (STEEL)
Match heater kW to insulated interior volume. Glass, stone, tile, or thin walls need more heater than a tight wood room of the same size. A licensed electrician completes the hookup from the nameplate — we do not guess breaker size. Email hello@selfcaresaunas.com to size the room first.
FAQ
Are stones included? Heater-only SKUs: no. STU packages: stones are part of the STU name; still confirm the carton with our team.
Is UKU included? Heater-only: no. Packages whose options list UKU Local / UKU Wi-Fi: yes, that control finish is the option you pick.
240V? HUUM US heaters are typically 240V hardwired. Electrician uses the HUUM table in the manual. We do not invent amps.
