HUUM Hive 18 kW Electric Sauna Heater — Saunas
HUUM Hive 18 kW Electric Sauna Heater
The HUUM Hive 18 kW Electric Sauna Heater is a premium electric sauna heaters. for lasting durability and natural beauty. Backed by manufacturer warranty with nationwide freight delivery.
“I’m very impressed with the efficiency. It keeps the room consistently hot.”
It's a great heater but it is very large, so it dominated the small corner we put it in.
Elena C.
I’m very impressed with the efficiency. It keeps the room consistently hot.
Greg T.
The design is very clean and the materials look very high-end.
Paula J.
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 in Free Standing Form
Hive electric sauna stove is an elegant solution for bigger saunas, for example, for spas and gyms. This floor-mounted stove holds up to 550 lb / 250 kg of stones, which ensures a long-lasting hot steam even for larger groups, without compromising on design.
The HUUM HIVE 18 is a premium quality floor-mounted 18-kilowatt electric sauna heater designed for large sauna rooms from 636 to 1236 cubic feet. The WiFi compatible HIVE 18 sauna heater is engineered for reliable daily use in commercial wellness centers such as health clubs, day spas, and gyms. Its massive 550-pound stone capacity ensures a soft, consistent, high heat and allows for better steam for larger groups. The HIVE 18 is constructed of high-grade stainless-steel and equipped with professional-quality stainless-steel heating elements. The sauna unit is designed so that its sauna stones are in direct contact with the heating elements for more efficient heat transference and can be used wet or dry.
HUUM Hive Series heaters are precision-crafted in Estonia to provide years of dependable operation. HUUM HIVE Heaters are SGS Listed to ensure quality and safety. The Hive 18 kW sauna heating unit carries HUUM’s 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.
Key Features
- Stainless steel construction
- High stone capacity (550 lb / 250 kg)
- 5-year guarantee
- Free standing heater with external control
- Size: 29.53" h × 22.05" diam.
For Saunas From 636 to 1236 ft³ / 18 to 35 m³
The organic and minimalist design of the Hive 18 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
- Pre-Installed HIVE Air Tunnel
Recommended Selections:
- Control Unit
- Stones (2-4 in / 5-10 cm)
Specifications
| Model | HIVE 18 |
|---|---|
| Kilowatt Rating | 18.0kW |
| Minimum Cubic Feet | 636 |
| Maximum Cubic Feet | 1236 |
| Heater Weight | 53.5 lbs |
| Shipping Weight with Sauna Stones | 581.5 lbs |
| 240V, Single-Phase Amperage | 75 |
| Circuit Breaker | 50 + 50 |
| Wire Size AWG | 8 + 8 |
| Diameter | 22" (560mm) |
| Height | 29.5" (750mm) |
| Model | kW | Cubic Footage Min - Max | Amps/Circuit Breaker/Wire Size | A - Safety Distance | B - Safety Distance |
| HIVE 12 | 12 | 424 - 883 | 50 / 30+30 / 10+10 AWG | 4.73" | 31.5" |
| HIVE 15 | 15 | 530 - 1060 | 62.5 / 50+50 / 8+8 AWG | 5.9" | 33.86" |
| HIVE 18 | 18 | 636 - 1236 | 75 / 50+50 / 8+8 AWG | 7.1" | 36.22" |
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 (6)
It's a great heater but it is very large, so it dominated the small corner we put it in.
I’m very impressed with the efficiency. It keeps the room consistently hot.
The design is very clean and the materials look very high-end.
Very powerful, but it’s a massive electrical load. Make sure you have the right setup for it.
Sturdy and incredibly effective. We use this daily and it never skips a beat.
18kW is perfect for my backyard sauna cabin. It heats up in no time even in freezing weather.
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Complete your setup
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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.



