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Home  ▸  Electric Sauna Heaters  ▸  HUUM  ▸  Hive Series

HUUM Hive Sauna Heaters

6 - 18 kW   ◆   Free-Standing   ◆   External Control Unit

Shop HUUM HIVE sauna heater options for residential sauna projects where a freestanding electric heater and substantial stone mass fit the room design and heating requirements. The HUUM HIVE family includes multiple outputs and configurations, so the correct model should be selected according to sauna-room volume, uninsulated surfaces, electrical requirements, controls, and manufacturer specifications. Compare the HIVE models below to find the right fit for a new sauna, replacement heater, or heating-system upgrade.  [read more]

HUUM Hive Sauna Heaters

The HUUM Hive is available in your choice of six powers: 6.0 kW, 9.0 kW, 10.5 kW, 12.0 kW, 15.0 kW or 18.0 kW.

Model          Model
Power      Power
Adj. VolumeAdjusted Sauna Volume

This column shows the adjusted sauna volume range for which each sauna heater is rated.

"Adjusted sauna volume" is the volume (i.e. Width  x  Depth  x  Height) of the interior of the sauna PLUS an adjustment for cold surfaces in the sauna (i.e. glass, tile, stone, etc. — but not including the floor). This adjustment is typically around +20% but can be more (for example, if your sauna has multiple large windows).

Want to verify your sauna's adjusted volume?  Use this 20-second CALCULATOR to make sure the heater you buy has the correct power (measured in kilowatts, or kW).
Adj. Vol.Adjusted Sauna Volume

This column shows the adjusted sauna volume range for which each sauna heater is rated.

"Adjusted sauna volume" is the volume (i.e. Width  x  Depth  x  Height) of the interior of the sauna PLUS an adjustment for cold surfaces in the sauna (i.e. glass, tile, stone, etc. — but not including the floor). This adjustment is typically around +20% but can be more (for example, if your sauna has multiple large windows).

Want to verify your sauna's adjusted volume?  Use this 20-second CALCULATOR to make sure the heater you buy has the correct power (measured in kilowatts, or kW).
Sauna SizeMaximum Sauna Size

This column provides a quick-reference estimate of the maximum sauna capacity (i.e. 3-person sauna, 4-person sauna, etc.) for which each sauna heater is rated.

Again, this is only an estimate based on average sauna sizes, layouts & interior cold surfaces. Your sauna may differ. We strongly recommend taking 20 seconds to verify your sauna's adjusted volume (which is much more precise) to make sure the heater you buy has enough power (measured in kilowatts, or kW).
Sauna SizeMaximum Sauna Size

This column provides a quick-reference estimate of the maximum sauna capacity (i.e. 3-person sauna, 4-person sauna, etc.) for which each sauna heater is rated.

Again, this is only an estimate based on average sauna sizes, layouts & interior cold surfaces. Your sauna may differ. We strongly recommend taking 20 seconds to verify your sauna's adjusted volume (which is much more precise) to make sure the heater you buy has enough power (measured in kilowatts, or kW).
Control Unit Controller
Price Price
View Product
Hive Mini 6 6.0 kW 177 - 318 ft³ 3-4 people Any UKU controller $2,502 Heater view Bundle bundle
Hive Mini 9 9.0 kW 283 - 460 ft³ 5-6 people Any UKU controller $2,657 Heater view Bundle bundle
Hive Mini 11 10.5 kW 354 - 566 ft³ 6-7 people Any UKU controller $2,785 Heater view Bundle bundle
Hive 12 12.0 kW 424 - 636 ft³ 7-8 people Any UKU controller + ext box $2,848 Heater view Bundle bundle
Hive 15 15.0 kW 530 - 813 ft³ 8-9 people Any UKU controller + ext box $3,088 Heater view Bundle bundle
Hive 18 18.0 kW 636 - 989 ft³ 9-10 people Any UKU controller + ext box $3,356 Heater view Bundle bundle

Key Features:

  • Free-standing (i.e. floor heater)
  • 330 (Mini) or 528 pound stone capacity
  • Connects to a 240-Volt electric line
  • Reaches temperatures up to 230° F
  • Nature-inspired beehive shape
  • Made and designed in Estonia
  • 18.1" (Mini) or 22.0" diam. x 29.5" height
  • Backed by a 3-year warranty
Not sure how much power you need?

Use this calculator to tell us about your sauna, and we’ll tell you how many kilowatts (kW) your heater needs.

Other HUUM Designs

HUUM HIVE Sauna Heaters: Models, Design & Key Features

HUUM HIVE sauna heaters are freestanding electric heaters designed for traditional sauna rooms. Within the HIVE family, individual models differ in heating output, physical dimensions, stone requirements, room-size recommendations, controls, and installation specifications, making model selection an important part of planning the sauna.

Freestanding HUUM HIVE Electric Sauna Heaters

The HIVE line uses a freestanding configuration rather than a compact wall-mounted format. This makes the heater a prominent part of the sauna interior and allows the surrounding stone structure to become part of both the heating system and the visual design of the room.

Freestanding placement can work well in many medium and larger sauna layouts, but the heater must still be positioned according to the required safety clearances for the specific model. Shoppers comparing other formats can browse freestanding sauna heaters or the broader selection of HUUM sauna heaters.

HUUM HIVE and HIVE Mini Models

HUUM HIVE Mini sauna heater installed in a traditional saunaThe HIVE family includes different heater configurations intended for different sauna-room requirements. HIVE Mini models provide a more compact option within the same general product family, while larger HIVE models may be appropriate where room size, heater output, and installation conditions call for a larger unit.

The correct choice should be based on the manufacturer's rated sauna-volume range rather than the heater's appearance or physical size alone.

Stone-Based Traditional Sauna Heating

Like other traditional electric sauna heaters, HUUM HIVE heaters use electric heating elements to heat sauna stones and the surrounding room. The heated stones store thermal energy and allow water to be applied according to manufacturer instructions to create temporary increases in steam and perceived humidity.

Stone quantity and loading requirements vary by model. Use only appropriate sauna stones that meet the requirements for the specific heater.

Different Outputs for Different Sauna Rooms

HUUM HIVE heaters are available in multiple heating capacities. A higher-output model is not automatically a better choice; heater output should be matched to the effective volume and construction of the sauna.

Glass, tile, masonry, stone, concrete, and other uninsulated surfaces can affect sizing calculations, so always compare the sauna room with the published specifications for the individual HIVE model.

HUUM HIVE vs. HIVE Mini: What’s the Difference?

HUUM HIVE and HIVE Mini heaters belong to the same freestanding heater family, but they are intended to accommodate different space, output, and installation requirements. The most useful comparison is not simply which model is “better,” but which one fits the sauna room correctly.

Heater Size and Footprint

HIVE Mini models are designed around a more compact heater format, which may make them easier to incorporate into sauna layouts where usable floor area is more limited. Larger HIVE models occupy more space and should be evaluated carefully against the manufacturer's required clearances.

Heating Output and Sauna Capacity

The HIVE family includes multiple outputs intended for different sauna-volume ranges. Choosing between HIVE and HIVE Mini should begin with the room's calculated volume and the manufacturer's recommended capacity for each heater.

Shoppers who want to compare heaters primarily by heating output can browse electric sauna heaters by kW power.

Stone Requirements

HUUM HIVE sauna heater installed inside a wood saunaStone requirements vary across HIVE models. Stone mass affects thermal behavior, warm-up characteristics, and how the heater responds when water is applied to the heated stones, but greater stone capacity should not automatically be treated as superior.

The best configuration depends on the heater design, sauna-room volume, and the type of sauna experience the owner prefers.

Which HUUM HIVE Model Should You Choose?

Choose the model whose rated room-volume range, electrical specifications, clearances, control requirements, and installation instructions align with your sauna. Avoid selecting solely by price, maximum kW, or the physical size of the heater.

Choosing the Right HUUM HIVE Sauna Heater Size

Correct sizing is one of the most important decisions when buying a HUUM HIVE sauna heater. The heater must be capable of heating the room it is installed in without being unnecessarily oversized for the space.

Start With Interior Sauna Volume

Measure the usable interior dimensions of the sauna and calculate its cubic volume. Then compare that number with the manufacturer's recommended sauna-volume range for the specific HIVE model being considered.

You can also compare electric sauna heaters by sauna capacity when narrowing options for a particular room size.

Account for Glass and Other Uninsulated Surfaces

Sauna sizing is not always as simple as multiplying length by width by height. Large glass doors or windows, masonry, stone, tile, concrete, and other uninsulated surfaces can increase the heating demand of the room.

These surfaces should be accounted for according to HUUM's sizing guidance before choosing a heater output.

Do Not Choose by kW Alone

Heater output in kilowatts is important, but it should not be evaluated in isolation. Two sauna rooms with similar dimensions may have different heating requirements because of insulation, glazing, construction materials, ventilation, or installation conditions.

Why Undersizing Can Be a Problem

A heater that is too small for the effective sauna volume may struggle to reach or maintain the desired sauna temperature. That can lead to longer heating cycles and performance that does not match the intended room.

Why Bigger Is Not Always Better

An unnecessarily large heater may also be inappropriate for the room. The goal is to match the HUUM HIVE heater to the sauna—not simply to choose the highest-output model available.

HUUM HIVE Heater Features & Sauna Experience

The defining characteristics of a HUUM HIVE heater affect more than appearance. Heater configuration, stone quantity, room layout, ventilation, bench placement, and water use all contribute to how the sauna feels during operation.

Open Stone-Focused Heater Design

HUUM HIVE Mini electric sauna heater with exposed sauna stonesThe HIVE family's freestanding design places the sauna stones prominently around the heater structure. This gives the heater a distinctive stone-focused appearance while providing thermal mass that stores heat during operation.

Heat Storage and Thermal Mass

Sauna stones absorb heat from the electric elements and continue radiating that energy into the sauna room. The amount of stone used varies by heater and can influence warm-up behavior and the character of the heat.

More stone mass should not automatically be interpreted as better; the overall system should suit the room size and intended use.

Steam When Water Is Applied to the Stones

In a traditional sauna, water may be applied to appropriately heated stones according to the manufacturer's operating instructions. This produces a temporary burst of steam and humidity rather than turning the room into a steam bath.

Freestanding Design as Part of the Sauna Layout

Because a HUUM HIVE sauna heater stands on the floor, its placement becomes part of the room plan. Bench spacing, walking area, heater guards, clearances, and the overall sauna footprint should all be considered before installation.

HUUM HIVE Controls, Accessories & System Components

A HUUM HIVE heater is one part of the complete sauna heating system. Depending on the specific model and configuration, the installation may also require compatible controls, sensors, stones, safety components, and other heater accessories.

Sauna Heater Controls

Control requirements vary by heater, and customers should verify the compatible control system for the exact HIVE model they are purchasing. Do not assume that every controller works with every HUUM heater.

Available options can be compared in the sauna heater control units collection, with compatibility confirmed at the product level.

Control Sensors and Related Components

Some sauna control systems require separate temperature sensors or other components as part of the installation. Their location and installation must follow the applicable manufacturer instructions.

Sauna Stones

Stones are a functional part of the heater, not simply a decorative accessory. Use the quantity, stone type, and loading method specified for the exact HIVE heater.

Safety Railings and Heater Guards

Depending on the sauna layout and chosen heater, compatible safety railing products may be useful around the heater. Browse sauna heater safety railings while verifying model-specific compatibility before purchase.

HUUM-Specific Accessories

Additional components may be available for particular HUUM installations, including installation, control, or heater-related accessories. See HUUM sauna heater accessories for compatible options.

HUUM HIVE Installation Requirements

Installation requirements differ among HUUM HIVE models and should always be confirmed from the specifications and installation manual for the exact heater. Electrical service, controls, sensors, clearances, heater positioning, and room construction can all affect installation planning.

Electrical Requirements Are Model-Specific

Voltage, phase, amperage, breaker size, wiring, and control requirements can vary by heater. Do not assume that every HIVE model uses the same electrical configuration or that the heater can be connected to a standard household outlet.

Many Electric Sauna Heaters Require Hardwiring

Electric sauna heaters commonly require dedicated electrical service and hardwired installation. Electrical work should comply with the heater manufacturer's instructions, applicable electrical codes, and local requirements, and should be completed by a qualified professional where required.

Required Safety Clearances

HUUM HIVE sauna heater integrated into a custom sauna bench installationEvery heater has specific clearance requirements from combustible surfaces, benches, walls, and other nearby materials. These measurements must be verified for the exact HUUM HIVE model before finalizing the sauna layout.

Heater Placement and Bench Design

Because HIVE is a freestanding heater family, the floor plan should account for the heater footprint, safe circulation around it, bench placement, and any approved railing or embedding solution. Never assume that an installation shown with one HIVE model can be duplicated with another without checking its specifications.

Controls and Sensor Placement

Where an external control and temperature sensor are required, installation location matters. Follow the documentation supplied with the heater and control system rather than using a universal placement rule.

HUUM HIVE Sauna Heater Prices & Total System Cost

The listed heater price is only one part of the cost of a HUUM HIVE installation. A useful comparison should consider the complete heating system and the work required to install it correctly.

Heater Price Varies by Model

HUUM HIVE pricing varies according to the specific heater configuration and output. Rather than choosing the lowest-priced or highest-output option, first determine which models are properly sized for the sauna and then compare those suitable choices.

Controls May Be an Additional Cost

If the chosen HIVE heater requires a separate control system, include the compatible controller and any required control components when comparing the total project cost.

Sauna Stones and Accessories

Required stones and optional compatible accessories can add to the complete purchase price. Confirm what is included with the heater and what must be purchased separately before comparing two systems.

Electrical Installation

Electrical labor, wiring, breaker requirements, service upgrades, and other installation work can materially affect total installed cost. The amount varies by heater and by the existing electrical infrastructure at the property.

Evaluate Value by Fit, Not Heater Price Alone

The best long-term value comes from selecting a heater that is appropriate for the sauna's volume, construction, control system, electrical service, and intended use. A properly matched HUUM HIVE sauna heater is generally a better purchasing decision than choosing a model simply because it costs less or provides more kW.