HUUM CLIFF Electric Sauna Heater 6/9/10.5kW
The HUUM CLIFF is a slim, floor-standing electric sauna heater with remarkably small safety distances, which makes it a good fit for saunas with limited space. An internal air duct heats the room up to 25% faster, and the removable ribs make it easy to stack the 165 lbs. of stones the heater holds. It is offered in three sizes: CLIFF 6 (6 kW, order no. H1004012), CLIFF 9 (9 kW, order no. H1004022) and CLIFF 11 (10.5 kW, order no. H1004032).
The heater does not run on its own: it requires a HUUM UKU control and sauna stones, both sold separately. See What to Order With It below.
Package Contents
- HUUM CLIFF sauna heater
- 2 prop blocks for removing the heater ribs
- Floor fastening brackets
- Installation and operation manual
Key Features
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Model / Order #: CLIFF 6 / H1004012, CLIFF 9 / H1004022, CLIFF 11 / H1004032
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Slender Design: Suitable for small saunas with limited space.
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Small Safety Distances: As little as 2.36 in (60 mm) to the side walls on the CLIFF 6.
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Faster Heat-Up: Heats up to 25% faster due to the internal air duct.
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Three Sizes: 6, 9 and 10.5 kW for sauna rooms from 176 to 600 cu. ft.
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240V / 1-Phase: Hardwired 240V single-phase operation. Can also run on 208V single-phase at reduced output.
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165 lb Stone Capacity: Requires 5 boxes of stones, sold separately.
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Removable Ribs: Ribs come off for more accurate stacking of the stones.
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Direct Stone Contact: Direct contact between the stones and heating elements; more exposed stones create a longer and milder heat.
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Stainless Steel: Stainless steel construction with stainless steel, industrial-quality heating elements.
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Floor Model: Stands on the floor and is fastened to it with the included brackets.
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Control: Works with HUUM UKU controls, sold separately.
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Origin: Designed, engineered and made in Estonia.
What to Order With It
The heater ships without a control or stones. Both are required for operation.
Required (choose one UKU control):
Required (sauna stones, order 5 boxes):
Optional:
Specifications
| Model |
CLIFF 6 |
CLIFF 9 |
CLIFF 11 |
| Order number |
H1004012 |
H1004022 |
H1004032 |
| UPC |
4745090270365 |
4745090270396 |
4745090271300 |
| Output at 240V |
6 kW |
9 kW |
10.5 kW |
| Sauna room size at 240V |
176-353 cu. ft. |
317-529 cu. ft. |
353-600 cu. ft. |
| Current at 240V |
25 A |
37.5 A |
43.75 A |
| Circuit breaker at 240V |
30 A |
50 A |
50 A |
| Wire size at 240V |
10 AWG |
8 AWG |
8 AWG |
| Output at 208V |
4.8 kW |
7.1 kW |
8.5 kW |
| Sauna room size at 208V |
142-248 cu. ft. |
212-354 cu. ft. |
265-424 cu. ft. |
| Current at 208V |
21.63 A |
32.45 A |
37.98 A |
| Circuit breaker at 208V |
30 A |
40 A |
50 A |
| Wire size at 208V |
10 AWG |
8 AWG |
8 AWG |
| Heater weight (empty) |
35 lbs. |
35 lbs. |
37.5 lbs. |
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Heater Type: Electric sauna heater, floor-standing inside the sauna room
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Electrical Service: 240V, 1-phase, hardwired (208V, 1-phase at the reduced outputs shown above). Must be connected by a licensed electrician.
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Control: HUUM UKU control required, sold separately
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Stone Capacity: 165 lbs.
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Stone Size: 1.2-1.9 in (3-5 cm)
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Maximum Temperature Setting: 230 F (110 C)
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Construction: Stainless steel, brushed stainless steel finish
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High Temperature Limit: At the sensor
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Listing: SGS listed, CE, IPX4
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Location: Indoor sauna room use
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Delivery: Ships by LTL freight.
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Warranty: 3-year limited residential, 1-year limited commercial, excluding heating elements
Dimensions & Weight
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Heater Dimensions (W x D x H): 10.6" x 10.6" x 38.4" (270 x 270 x 975 mm), all sizes
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Heater Weight (empty): CLIFF 6: 35 lbs. CLIFF 9: 35 lbs. CLIFF 11: 37.5 lbs.
Installation Requirements
Minimum safety clearances (letters refer to the diagram below):
| Model |
CLIFF 6 |
CLIFF 9 |
CLIFF 11 |
| A: heater to side walls |
2.36 in (60 mm) |
9.45 in (240 mm) |
15 in (380 mm) |
| B: clear width |
15.35 in (390 mm) |
29.5 in (750 mm) |
40.5 in (1030 mm) |
| H: heater height |
38.4 in (975 mm) |
38.4 in (975 mm) |
38.4 in (975 mm) |
| Top of heater to ceiling |
47.3 in (1200 mm) |
47.3 in (1200 mm) |
47.3 in (1200 mm) |
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Fastening: The CLIFF 6, 9 and 11 are attached to the floor with the included brackets, one on a heater leg, fixed with a 6 x 40 mm screw.
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Power connection: The power cable enters through the bottom cover of the heater.
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Stones: Use 1.2-1.9 in (3-5 cm) stones. Stack them sparsely between the heating elements and tightly on the outside so the elements are not visible. A stone container filled too sparsely is a fire hazard.
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Sauna room height: The manual calls for a ceiling height of 86.6-91 in (2200-2300 mm).
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Surface temperature: Installing the heater closer to flammable construction than the clearances above may cause a fire hazard.
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Wiring: Use heat-resistant power cable that meets UL 62; cable with PVC insulation is not allowed. A circuit breaker that disconnects all poles must be installed on the power circuit ahead of the sauna control. HUUM recommends connecting the heater without a GFCI breaker. Breaker and wire sizes above are from the installation manual; your electrician sizes the circuit to local code.
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Junction box: Must be waterproof and located no more than 19.7 in (50 cm) from the floor.
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Uninsulated walls: For any uninsulated brick, tile or glass wall, add 3.3 cu. ft. to the room volume for each 1 sq. ft. of that wall before choosing a size.
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One heater per room: Do not install more than one heater in the sauna room.
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Installation: Electrical work must be carried out by a licensed electrician, following the installation manual and local codes.
Documents
Installation & Operation Manual (CLIFF 6 / 9 / 11 and CLIFF Mini 4)
Warranty
3-Year Limited Residential Warranty, 1-Year Limited Commercial Warranty: HUUM covers the CLIFF with a 3-year limited warranty in residential use and a 1-year limited warranty in commercial use. Heating elements are not covered; they are treated as consumable parts. The warranty applies only when the heater is installed and used according to the manual, and it is void if the heater and sauna room are sized incorrectly.
