HUUM CLIFF 11STU - Huum Electric Heater Package
This HUUM Cliff sauna heater package comes complete with the traditionally designed CLIFF 11kW sauna heater, UKU control (WiFi optional), and sauna stones - everything you need to build your dream sauna experience. The package has been combined for use in sauna rooms up to 566 cu. ft.
Features & materials
- Slim design
- Suitable for use in saunas with limited space
- Small safety distances
- Heats up to 25% faster due to internal air duct
- For sauna rooms from 354 to 566 cu. ft.
- Works with UKU extension box (sold separately)
- 165 lb. stone capacity (required 5 boxes sold separately)
- Removable rib(s) for more accurate stacking of stones
- Direct contact between stones and heating elements
- More exposed stones create a longer and milder heat
- Stainless steel construction
- Stainless steel, industrial quality heating elements
- Floor model
- Designed, engineered, and made in Estonia
- Dimensions: 10.6" W (270mm) x 10.6" W (270mm) x 38.4" H (975mm)
- Limited 3-year residential warranty and limited 1-year commercial warranty (excluding elements)
- Sleek Black control display panel
- Multiple Color Options available (additional charges apply)
- Settable on/off, time, temperature, and delay
- Settable temperature range of 104-230F
- Delayed start up to 48hrs in advance
- Optional Built-in Wi-Fi interface for HUUM mobile app (additional charges apply)
- 8 Language options: English, German, Russian, Italian, Finnish, Estonian, Polish and French
- Inside/outside sauna room installation
- Optional smart heating setting
- Available decorative control display panels
- Displays set temperature and room temperature
- Temperature sensor
- Door sensor to keep the heat inside the room
- Remotely located main control module
- Connects to lights and ventilation
- Overheat protection
- Child safety lock
- Control Console Dimensions: 2.2"W (55mm) x 0.9"D (22mm) x 4.1"H (105mm)
- Main Control Module Dimensions: 3.5"W (90mm) x 2.3"D (58mm) x 5.6"H (142mm)
- Olivine diabase sauna stones
- Rounded shape to complement heater design
- Durable with high-heat capacity
- Stones range from 1" to 2" (3-5 cm)
Manuals & documents
Shipping & delivery
Shipping cost: Shipping on this item is free within the contiguous US.
Most in-stock orders ship within 3–5 business days of confirmed payment, and delivery is typically 5–15 business days after shipment. Made-to-order saunas and custom-configured rooms need production time on top of that, which we confirm before the order is released. We ship within the contiguous United States.
Large items ship LTL freight on a pallet, delivered curbside — to the curb or the end of your driveway, often from a trailer up to 53 feet long. Curbside does not include unpacking, assembly, installation or electrical connection. The carrier calls to book an appointment and someone must be there to receive the shipment. Tell us at the time of order if access is limited — narrow or rural roads, steep driveways, gated communities — and ask for liftgate service if you have no dock or forklift.
Inspect the shipment before the driver leaves and before you sign. Count the cartons and pallets against the paperwork, check glass doors and panels, write any damage or shortage on the Delivery Receipt, and photograph it. Email info@plungeintosaunas.com within 48 hours of delivery with your order number, photos and the noted receipt — the same window covers concealed damage and missing items. Keep the packaging while a claim is open.
Cancellations & returns
Cancel before the order has been submitted for fulfillment and it is refunded in full — email info@plungeintosaunas.com with your order number. After that point manufacturer, carrier, return-freight or restocking fees may apply. Every return must be approved by us in writing first: products ship from different manufacturer warehouses, so the correct return address varies, and anything sent back without authorization may be refused.
Return requests are made within 30 days under our general policy; some brands run that window from the date of purchase rather than delivery. Items must be unused, uninstalled, never heated or filled, complete in their original packaging and in resalable condition. Restocking fees run up to 25% depending on the manufacturer, while Harvia, HUUM, SaunaLife, Saunum, Narvi, ThermaSol, Delta, Kohler and Mr. Steam charge no restocking fee at all, only a re-boxing fee of roughly $20–$50 if the original packaging does not come back intact. On a change-of-mind return you pay return shipping and the original outbound shipping is not refunded.
If the item arrived damaged or a manufacturer error is at fault, return shipping is covered for you. Custom, made-to-order and special-order items already in production, clearance and open-box items, heaters that have been wired or fired, tubs and generators that have been filled, assembled or heated rooms, opened consumables and all Canadian Timber Collection products cannot be returned. Ask us before you buy if you are unsure.
Complete your setup
Total for 1 item $4,341.00
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HUUM CLIFF 11STU -
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- Free shippingOn this item · contiguous US
- Authorized dealerFull manufacturer warranty
- Sized by a specialistRoom, heater and install checked
- Talk to a human(888) 739-3321
Model specifications
The figures that decide the buy. The complete sheet ships with the manual.
- Model
- CLIFF 11STU PKG
- Kilowatt Rating
- 11 kW
- Minimum Cubic Feet
- 354 cu. ft.
- Maximum Cubic Feet
- 566 cu. ft.
- Heater Weight
- 37.5 lbs (17kg)
- Shipping Weight with Sauna Stones
- 202.5 lbs (92 kg)
- 240V, Single Phase Amperage
- 37.5 A
- Width
- 10.6" (270mm)
- Depth
- 10.6" (270mm)
- Height
- 38.4" (975mm)
- Minimum Temperature Setting
- 104 F
- Maximum Temperature Setting
- 230 F

Manufacturer figures. The complete specification sheet, clearances and wiring details are in the manufacturer's installation manual. See the Manuals tab above.
Heater Size Calculator
At 11.0 kW this heater is rated for sauna rooms of 354 to 566 adjusted cu ft.
A heater that is too small never reaches temperature; one that is too big cycles on and off and gives harsh, dry heat. Match the rated range to your room's adjusted volume — the calculator does the maths in under a minute, or call us with your dimensions.
- 11.0 kW 354566
The shaded bar is the room size this heater is rated for. Work out your room's adjusted cubic feet below, then check the number lands inside the bar.
Working out your adjusted cubic feet
- Room volume — length × width × height in feet.
- Glass and stone add load — count about 4 cu ft extra per square foot of glass, tile or stone wall.
- Uninsulated or log walls — multiply the total by 1.5.
Everything in the box
Exactly what ships with this model, straight from the manufacturer's packing list.
- 11kW sauna heater
- 2 prop blocks (for removal of sauna rib slats)
- Installation and operation manual
- Limited 3-Year Residential Warranty and 1-Year Commercial Warranty (Excluding Elements)
- Black Control console
- Main control module
- Temperature sensor
- Door sensor
- Control display panel cable
- Temperature sensor cable
- Door sensor cable
- Limited 3-Year Residential Warranty and 1-Year Commercial Warranty
- 165 lbs of 1" to 2" (3-5 cm) round Olivine sauna stones
Sauna stones, water treatment and accessories are sold separately unless listed above.
Setting up
What happens between checkout and your first session.
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The CLIFF 11STU PKG weighs 37.5 lbs (17kg) on its own, and 202.5 lbs (92 kg) boxed with its sauna stones. Curbside delivery by appointment, palletized. Check the carton for damage before you sign, and keep the packaging until the heater is installed and running.

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Final electrical hookup is a licensed electrician's job. Every figure here is on the spec table above and in the installation manual.

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The CLIFF 11STU PKG is rated for rooms of 354 cu. ft. to 566 cu. ft. at 11 kW. Start with width × length × height, then adjust upward for glass, tile or stone, which all add load. Our Heater Size Calculator does the adjustment for you, or call us and we'll size it with you before you order.

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Check the What's included list above for exactly what ships in the box. Rinse and stack the stones loosely before the first heat-up, and add a bucket and ladle if you want to throw water.

Not sure your site is ready? Call (888) 739-3321 before you order and we'll walk through it with you.
Talk it through with a sauna specialist
Room size, heater match, electrical, delivery access — a ten-minute call answers most of it. No pressure, no sales script.
Daily, 8 AM to 7 PM Pacific. Or email info@plungeintosaunas.com any time.
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Sizing & fit
We'll check the footprint, ceiling height and heater match for your space. -
Electrical & site
What your electrician needs to know before you order. -
Delivery
Lead time, freight access and what to expect on delivery day.
What happens next
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We check the order
A sauna specialist reviews the configuration, the delivery address and freight access, and usually calls you to confirm it before the order is released to the manufacturer. Anything that needs changing gets changed before it ships.
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Confirmation and lead time
You get an email with the confirmed lead time, the manuals for your unit and what to prepare on site. Tracking follows within 24 hours of it leaving the warehouse.
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Delivery day and after
The freight carrier calls to book a curbside appointment — count the cartons and note any damage on the delivery receipt before you sign. Assembly, electrician and warranty questions after that come to us, and we handle them with the manufacturer on your behalf.
Frequently Asked Questions
Yes! Shop Pay Installments may be available at checkout, allowing you to split your order into installment payments, with interest-free options on eligible orders and monthly plans from 0–36% APR. Just select Shop Pay at checkout to see your options.
Warranty coverage varies by manufacturer and product. Please refer to the product page or included documentation for specific details. Warranties are provided by the manufacturer. We're happy to help connect you with the manufacturer if you have a warranty question.
We ship within the contiguous United States only. We do not currently ship to Alaska, Hawaii, PO boxes, APO/FPO addresses, or international destinations.
No. Standard curbside delivery means the carrier delivers to the curb or end of your driveway only. The driver is not required to bring items into your home, garage, or backyard, and delivery does not include unpacking, assembly, or installation.
Yes. Our store is secured with SSL encryption and all payments are processed through Shopify's secure checkout. We never store your full credit card information.
Exchanges are handled on a case-by-case basis. Contact us at info@plungeintosaunas.com with your order number and the item you'd like instead. If approved, you may be responsible for price differences, return shipping, and any applicable restocking fees.







