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HUUM Cliff Mini 4 (3.5kW)

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CLIFF/STEEL are slim electric sauna heaters with remarkably small safety distances, which makes them perfect for saunas with limited spaces. Thanks to its well-optimized structure, the safety distances from the walls are brought down to 2"for the HUUM CLIFF Mini and down to 2.5" for the HUUM STEEL Mini .


  • Stainless steel construction
  • High stone capacity - 132 lb (75 kg)
  • Heats 25% faster due to internal air duct
  • Wall mounted with external control
  • CLIFF:  Size 10.6" w × 6.3" d × 38.4" h
  • STEEL:  Size 12.6" w × 6" d × 38.4" h
  • 240V 1-phase, 15 amp, 14 AWG power hookup, great for residential home saunas
  • Cubic Feet Room Min/Max - 123/212
  • CLIFF:  Safety Distances - A: 2" - B: 16.5"
  • STEEL:  Safety Distances - A: 2.5" - B: 15.5"
  • CLIFF Installation Manual
  • STEEL Installation Manual
  • UKU Installation & Wiring Diagram
CLIFF Safety Distance Diagram

UKU Control

Superior Sauna Sauna UKU Control

The UKU control comes in two variations; A local version and a Wi-Fi version.

UKU Local sauna controller makes sauna heating easy and comfortable. You can connect it with lights/ventilation and steamer functions of your sauna and regulate all of them from the remote control. To ensure a safe sauna experience, UKU is equipped with door sensor, overheating protection and child safety lock.

UKU Wi-Fi sauna controller makes sauna heating very easy and comfortable. With UKU you can heat your sauna on the spot or do it from your phone through HUUM mobile app. In order to use the mobile app solution, UKU needs to be connected to a Wi-Fi network. UKU comes with several safety and extra features for a pleasant sauna experience.

Heater Stones

Superior Sauna Sauna Round Stones

We highly recommend using rounded stones in HUUM heaters to complement the design and have milder steam. In our selection, we have rounded olivine-diabase stones: 3-5 cm. The stones are durable and have high heat capacity. You can also use other types of stones in HUUM heaters, except decorative stones because they can break easily.

Return, Exchange FAQs

Read below for more information or please visit our FAQs page for anything about Saunas or returns, shipping and delivery here.

Product Guarantees

At Superior Saunas we hand pick the best products, we hold pride for our amazing customer service, one of the largest distributers in the USA for all things Sauna and include education materials in our site along with additional information for every product we sell. Please read below for more information on our guarantees and FAQs.

Informative Sauna Articles
HUUM Cliff Mini 4 (3.5kW)
HUUM Cliff Mini 4 (3.5kW)
HUUM Cliff Mini 4 (3.5kW)
HUUM Cliff Mini 4 (3.5kW)
HUUM Cliff Mini 4 (3.5kW)
HUUM Cliff Mini 4 (3.5kW)


  • Quality Assurance

    We use high-quality materials and construction methods in all of our hand-made sauna kits, and offer warranties across our carefully selected brands.

  • Amazing Customer Service

    Our knowledgeable Design Consultants are headquartered along the shores of Lake Superior, ready to help you with your sauna build project pre & post-purchase.

  • Wide Range of Products

    From DIY sauna kits to steam rooms and accessories, we provide a comprehensive range of products to make your sauna dreams a reality.

  • Educational Resources

    We provide extensive information and resources about sauna installation & maintenance. Our team is very helpful and resourceful for both new & experienced sauna-goers.


What is the timeline for shipping?

Depending on the product orders will ship from the warehouse within 1 to 5 business days with typically 3 to 5 days in transit. Only occasionally orders may take up to 3 weeks depending on very heavy sales volumes and product availability. Superior Sauna currently ships by U.S. Postal Service Priority Mail and FedEx Ground, daily Mon-Fri. We do not ship on weekends or holidays.

Otherwise for FedEx Express: Orders placed before 1pm Central Standard Time should allow for us to schedule an Express pickup before the daily cutoff, otherwise next scheduled Express pickup day.

What is the return window?

Returns must be made within 30 days of receiving your goods.

What should I expect with freight orders?

For pallet shipping of orders: sauna kits, large Do-It-Yourself parts, commercial sauna heaters, sauna or steam room doors, etc., the U.S. Special freight company will pick up the order from our factory and transfer the order to beyond carrier if outside the Midwest. Sauna kit and custom DIY parts order delivery lead time is usually 2-4 weeks, depending on how many custom sauna orders are currently in production. Freight orders ship weekdays typically 3 to 7 days in transit in the US. Your order is delivered to your driveway, which can be unloaded by hand in bundles with 2 people or with fork lift at delivery site. Most bundles are between 10 and 40 lbs, sauna doors approx. 80 lbs., and wood sauna stoves are approx. 130 lbs.

Can't find the answer you are looking for?

Check out our FAQ's page or contact our customer service team via email or phone.

FAQ Page

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