The HUUM HIVE 12 is a HUUM electric sauna heater made in Estonia, 12 kW, about 424–636 cu ft. Full HIVE is the big floor basket. Huge stone mass, floor standing, UKU control — not a wall heater.
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 HIVE 12 heater
Stones sold separately (HUUM is explicit: stones, UKU, and power cable are not in the heater box)
UKU control sold separately
Specs
Brand: HUUM (Estonia)
Output: 12 kW
Approx. room volume: 424–636 cu ft
Mount: Floor
Control: UKU (sold separately unless this is a UKU package)
Stone load (manufacturer): about 551 lb / 250 kg, 2–4 in (HUUM HIVE 12/15/18)
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.
