HUUM Cliff Mini 3.5 kW Electric Sauna Heater — Saunas
HUUM Cliff Mini 3.5 kW Electric Sauna Heater
Elegant & Long-Lasting Steam, Perfect for Smaller Saunas The WiFi compatible HUUM Cliff Mini 3.5kw wall-mounted sauna heater is designed for home sauna rooms from 124 to 212 cubic feet. With it’s very exceptionally short safety distances, it is especially suited for smaller, modest sauna rooms.
“Solid construction and very stylish. Highly recommend for small home saunas.”
Solid construction and very stylish. Highly recommend for small home saunas.
Diane L.
Excellent heater. The small footprint is exactly what I wanted for my home design.
Mark D.
Very efficient for the size. It definitely makes for a great daily sweat.
Karen V.
Delivery & Logistics
- — Standard freight shipping
- — Carefully packaged for heavy components
- — Ships in 1–3 business days
- — Installation guide included
Final delivery options and freight quotes are confirmed at checkout based on your ZIP code.
Estimate Delivery to Your ZIP
Included with this heater
Wall or floor mounting
Mounts to the sauna wall or floor with included hardware. Straightforward installation for your electrician or contractor.
Free shipping
Ships free to the lower 48. Carefully packaged for heavy components.
Manufacturer warranty
Backed by the manufacturer's warranty. Contact us for specific coverage details.
Description
Elegant & Long-Lasting Steam, Perfect for Smaller Saunas
The WiFi compatible HUUM Cliff Mini 3.5kw wall-mounted sauna heater is designed for home sauna rooms from 124 to 212 cubic feet. With it’s very exceptionally short safety distances, it is especially suited for smaller, modest sauna rooms. The HUUM Cliff Mini 3.5 kW sauna heater’s large stone capacity creates a consistent, soft heat for an excellent sauna experience that can be wet or dry in use. The sauna unit is crafted of durable stainless-steel and features industrial-grade stainless steel heating elements and can hold up to 132 pounds of sauna stones. The unit is engineered so that the sauna stones are in direct contact with the heating elements for more efficient heat transference.
HUUM sauna heaters are precision-crafted in Estonia to provide years of dependable, efficient operation. All HUUM heaters come with a limited 5-year warranty and is fully serviceable. Choose from their standard UKU Digital Wall Control, or upgrade to the popular UKU WiFi Control options.
Features
- Stainless steel construction
- High stone capacity - 132 lb (75 kg)
- Heats 25% faster due to internal air duct
- Wall mounted with external control
- 240V 1-phase, 15 amp, 14 AWG power hookup, great for residential home saunas
- Safety Distances - A: 2" - B: 16.5"
For Saunas From 124 to 212 ft³ / 3.5 to 6 m³
The organic and minimalist design of the Cliff Mini 3.5 kW heater takes up very little space and makes a statement piece of your sauna. For controls, choose from HUUM UKU units (Local, Wi-Fi, or Glass). With a touch of dial and a range of sensors, you can easily control many aspects of your sauna experience, including temperature, steam, and lighting. Local comes in different colored plastic cases as well as a wood option made of thermo-treated ash. When you opt for UKU WiFi, you add in control of your sauna by a smartphone app, allowing you to put the sauna to work while being far from home. UKU Glass is elegant glass with integrated WiFi.
Sauna Stones
Stones aren't included, so we highly recommend adding them – unless you already have your own dedicated sauna stones. These stones available for selection are rounded and will complement your HUUM heater's design, as well as give a milder steam. In our selection, we have rounded olivine diabase stones, 5-10 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.
This Set Includes:
- Electric Stove
- Adjustable Legs
Recommended Selections:
- Control Unit
- Stones (2-4 in / 5-10 cm)
Specifications
| Model | CLIFF Mini 3.5 |
|---|---|
| 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 | -- |
| Width | 10.6" (270mm) |
| Depth | 6.3" (160mm) |
| Height | 38.4" (975mm) |
Useful Links
What's included
Specifications
SIZE & WEIGHT
POWER & ELECTRICAL
BUILD & MATERIALS
OWNERSHIP
ADDITIONAL DETAILS
Downloads
Print-Ready Documents
Download the print-ready spec sheet or brochure for this product — cleared for retail and wholesale use.
Authorized Dealer? These assets are cleared for retail use. Wholesale pricing available.
Shipping & Return Policy
Shipping
- Freight delivery to all 50 U.S. states · All rates in USD
- Curbside delivery with lift-gate service available
- Handling: 1–3 business days (Mon–Fri) · 2 p.m. PT cutoff · Transit: 2–16 business days by method
- Total delivery time = handling + transit · Professional installation available
Returns
- 30-day return window for new, unused items in original packaging
- Returns by mail — return label is the customer's responsibility
- 15% restocking fee of the product price applies
- Damaged or defective items eligible for free replacement
Professional Installation
Expert Assembly & Setup
We offer professional installation services so your sauna, hot tub, cold plunge, steam shower, or swim spa is assembled, connected, and tested by certified technicians — no need to coordinate separate contractors.
Site Assessment
We confirm your space measurements, utility requirements, and placement before scheduling — so there are no surprises on install day.
Professional Assembly
Our certified technicians assemble and position your product with precision. Pre-built panels lock together cleanly with the right tools.
Utility Connection
Licensed electricians and plumbers on our team handle dedicated circuits, water lines, and drainage — all to local code.
Testing & Walkthrough
We power on, test performance, verify safe operation, and walk you through daily use, maintenance, and care.
What's Included
- Certified technician assembly
- Electrical and plumbing connections by licensed pros
- Leveling, placement, and secure anchoring
- Performance testing and calibration
- Operational walkthrough and care guide
Add Installation
Installation is quoted separately based on your product, location, and site requirements. Add it during checkout or request a quote with your order.
Manufacturer Warranty
Backed by Quality
Every product we sell is backed by the manufacturer's warranty — so your investment is protected from day one. Coverage terms vary by product and brand, and specific details are listed in the specifications above.
Frame, shell, and cabinet integrity
Heaters, pumps, and electronics
Controls, jets, and internal fittings
Register your warranty after installation for full coverage.
Customer Reviews (10)
Solid construction and very stylish. Highly recommend for small home saunas.
Excellent heater. The small footprint is exactly what I wanted for my home design.
Very efficient for the size. It definitely makes for a great daily sweat.
The heater looks like a work of art. Excellent build and very easy to manage.
Compact and powerful. It fits perfectly in my tiny basement sauna.
Good performance, but the app interface could use some updates for better connectivity.
Love the modern design. The app works flawlessly for scheduling heat times.
Good for smaller rooms. Heats up quickly, but not meant for large spaces.
So easy to install and it takes up so little space. Exactly what I needed.
Perfect for my compact home sauna. The Wifi connectivity is a game-changer for pre-heating.
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Frequently Asked Questions
Most products ship within 1–3 business days, Monday–Friday. Order cutoff is 2 p.m. PT. Total delivery time = handling (1–3 business days) + transit. Transit times by method: Expedited 2–5, Standard Freight 5–8, Curbside 7–10, White Glove 10–14, and Free Shipping 12–16 business days. Freight items ship via curbside delivery with lift-gate service available. You'll receive tracking information once your order ships.