HUUM CLIFF Mini 3.5 kW Sauna Heater Package - Compact Stainless Steel Design for Small Spaces
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Product Information
The HUUM CLIFF Mini 3.5STU Sauna Heater Package features a compact 3.5kW heater, ideal for sauna rooms up to 212 cubic feet. Its slim, space-saving design allows for easy installation in smaller saunas.
The package includes a UKU control system (WiFi optional) for precise temperature control and scheduling. With a large stone capacity, it ensures long-lasting, mild heat through direct stone contact.
Built from high-quality stainless steel, it offers durability and efficient performance. This all-in-one package provides everything needed for a premium sauna experience.
Product Features
The HUUM CLIFF Mini 3.5STU Sauna Heater features a slim, wall-mounted design, ideal for small saunas from 123 to 212 cubic feet and heats up 25% faster with an internal air duct.
With a 133-pound stone capacity, direct stone contact ensures longer-lasting, milder heat.
The UKU control system (WiFi optional) offers advanced temperature control and smart heating features.
Large stone capacity
Fast heating
Slender, space-saving design
Designed in Estonia
HUUM CLIFF Mini 3.5STU Pkg CLIFF Mini Series 3.5kW Sauna Heater Package
- Wall-mounted model: Maximizes floor space and offers easy installation.
- Ideal for small saunas: Suitable for rooms from 123 to 212 cubic feet.
- Delayed start option: Program sauna activation up to 48 hours in advance.
- Flexible installation: Can be installed inside or outside the sauna room.
What’s Included?
CLIFF Mini 3.5kw Sauna Heater
- 3.5kW sauna heater
- 2 prop blocks (for removal of sauna rib slats)
- Installation and operation manual
- 5-Year limited warranty (excluding elements)
UKU
- Black Control console
- Main control module
- Temperature sensor
- Door sensor
- Control display panel cable
- Temperature sensor cable
- Door sensor cable
- Installation and operation manual
- 5-Year limited warranty
Stones 12
- 132 lbs of 1" to 2" (3-5 cm) round Olivine sauna stones
Additional Features
The HUUM CLIFF Mini 3.5STU Sauna Heater offers a slim, wall-mounted design, perfect for compact sauna
spaces.
It heats up 25% faster with an internal air duct for efficiency. The large 133-pound stone capacity
ensures milder, longer-lasting heat.
With stainless steel construction, Wi-Fi-enabled UKU controls (optional), smart heating, and safety
features, it delivers an exceptional sauna experience.
Customizable temperature settings
Temperature range from 104°F to 230°F.
Wi-Fi Connectivity
Optional built-in Wi-Fi for remote control via the HUUM mobile app.
Size Range
Stones vary from 1" to 2" (3-5 cm) for optimal heat absorption.
Child Safety & Overheat Protection
Ensures secure operation.
About HUUM
HUUM is an innovative Estonian company creating high-quality sauna heaters that blend exquisite design, smart technology, and traditional craftsmanship.
Founded by Siim Nellis, a third-generation sauna stove producer, HUUM draws on decades of expertise and Nordic sauna traditions.
Their award-winning designs, like the DROP heater, prioritize gentle steam, efficiency, and sustainability. Made in Estonia, HUUM brings the authentic sauna experience to the world.
Why Choose Us?
Choose Peak Primal Wellness for a personalized, community-driven approach to health. We prioritize your well-being with high-quality products, tailored solutions, and 24/7 support.
As a family-owned business, we build lasting relationships, offering authentic, effective solutions to help you achieve your wellness goals.
Join our thriving community and embark on a journey toward optimal health with passionate professionals who genuinely care. At Peak Primal Wellness, you're not just a customer—you're family.
Specifications
| Brand | HUUM |
| SKU | CLIFF Mini 3.5 |
| Model | CLIFF Mini 3.5STU PKG |
| CLIFF Mini 3.5STU | |
| Kilowatt Rating | 3.5 KW |
| Minimum Cubic Feet | 123 CF |
| Maximum Cubic Feet | 212 CF |
| Heater Weight | 33 lbs |
| Shipping Weight with Sauna Stones | 166 lbs |
| 240V, Single Phase Amperage | -- |
| Dimensions (W x D x H) | 10.6" W (270mm) x 6.3" D (160mm) x 38.4" H (975mm) |
| UKU | |
| Minimum Temperature Setting | 104 F |
| Maximum Temperature Setting | 230 F |
| Shipping Weight | 20 lbs |
| Console Dimensions (W x D x H) | 2.2" W (55mm) x 0.9" D (22mm) x 4.1" H (105mm) |
| Main Module Dimensions (W x D x H) | 3.5" W (90mm)x 2.3" D (58mm) x 5.6" H (142mm) |
| Display Panel Cable | |
| Length | 9.8 ft |
| AWG | 22 |
| Temp Sensor Cable | |
| Length | 16.4 ft |
| AWG | 24 |
| Door Sensor Cable | |
| Length | 16.4 ft |
| AWG | 24 |
| Manuals | |
| Installation and Operational Manual | Cliff IOM |
| Spec Sheet | Cliff Spec Diagram |
| Elements Required | HUUM ER |
| UKU | |
| Installation and Operational Manual | UKU IOM |
| Install Diagram | UKU Installation HUUM Glass & Mirror Diagram |
| Stones | |
| Stone Requirment | HUUM SR |
| Extension Box | Extension Box IM |
Warranty & Returns
Return Policy
Bathing Brands accepts returns of new, uninstalled items within 30 days of purchase. Contact us
promptly for a Return Authorization Number. For shipping damage, include photos and note if damage was
recorded upon delivery. Bathing Brands covers return shipping for damages or errors. For
change-of-mind returns, restocking fees are case-by-case, and customers cover shipping both ways. We
recommend insured shipping via the original method (Ground or LTL). Once returned, items are
inspected, and if damaged, you’ll be notified to file a claim with your shipper. Refunds are processed
after inspection. Custom or special-order items are non-returnable.
To request a return or refund, customers can use our contact form, email
(info@peakprimalwellness.com) , or phone
- (877) 689-4898. Once the product is inspected and confirmed to be in brand new condition, we will initiate the
refund, which typically takes 5-7 business days to post back to the original payment method. Refunds
can be applied via the customer’s preferred method, including card or bank transfer. Shipping
instructions and the return address will be provided upon contacting customer service. Please include
photos if the product arrives damaged.
Click here
to view our complete return policy for more details.
Shipping Policy
Customers may contact us by phone or email anytime to inquire about the status of their order. While we may not always have a tracking link available before the order ships, we are happy to check its current status for you. If an item is never received, please contact us immediately. We will promptly file a claim on your behalf and ship a replacement to ensure you receive your product as soon as possible. Click here to view our complete Shipping policy for more details.
Frequently Asked Questions
What is the HUUM CLIFF Mini 3.5STU Sauna Heater Package?
It’s a 3.5kW wall-mounted sauna heater designed for small saunas up to 212 cubic feet.
What type of sauna is this heater best suited for?
It is designed for compact home saunas, providing a traditional sauna experience with soft heat.
How fast does the heater warm up?
It heats up 25% faster due to its internal air duct that improves airflow efficiency.
Is this heater floor-mounted or wall-mounted?
The CLIFF Mini 3.5STU is a wall-mounted sauna heater, saving floor space.
What is the UKU control system?
The UKU control system is a digital controller that allows temperature adjustment, scheduling, and smart heating.
Can I operate the sauna remotely?
Yes, with the Wi-Fi-enabled UKU control system, you can manage your sauna via the HUUM mobile app.
Can I install the control panel outside the sauna?
Yes, the UKU control system can be installed inside or outside the sauna.
