FAQ — The Sauna Solution LLC

Frequently Asked Questions

Welcome to The Sauna Solution LLC FAQ page. Below you'll find answers to common questions about our sauna heaters, controllers, installation, and care. If you have a question that isn't answered here, please contact our team at sales@thesaunasolutionllc.com or call (949) 688-4198.

Troubleshooting

Why do the readings from my sauna controller and sauna thermometer differ?

A small difference between the two readings is normal and is caused by the natural measurement tolerances of each device. If the difference is greater than about 10–15 °C (50–59 °F), you should check the following:

Are the temperature sensor and the sauna thermometer located in different parts of the room where the actual temperature varies?
Is the temperature sensor positioned too close to the heater, door, vents, or windows? The recommended location is on the wall opposite the heater, roughly 15 cm (5.9 in) below the ceiling.
Is the thermometer itself working correctly?

If none of these are the cause and issues persist, the temperature sensor or its cable may be faulty and may need to be replaced. Please contact us for further assistance.

The screen on my sauna controller is blank — what should I do?

A blank screen is most often caused by a loss of power to the unit. Check that the controller is connected to power and that the breaker has not tripped. Inspect the connection cable between the control panel and the main unit for damage or a loose connector. If power is reaching the unit and the screen still does not turn on, the control panel may need to be serviced or replaced.

My sauna controller will not connect to the network. How do I fix it?

Wi-Fi-enabled controllers require a stable 2.4 GHz wireless network and a clear line of sight to your router. If you're having trouble connecting, restart your router, ensure your password is entered correctly, and place the controller within range of the access point. If issues continue, please reach out to our support team for guided troubleshooting.

My HUUM electric sauna heater is not heating. What should I check?

If your heater is powered but not producing heat, please verify the following:

Power supply: Confirm that the breaker has not tripped and that all phases are receiving power.
Controller settings: Make sure the heater is turned on, the timer is active, and the target temperature is higher than the current room temperature.
Heating elements: A failed heating element can prevent heating. Visual inspection or professional testing may be required.
Safety cut-off: A tripped overheat protector will stop heating until reset by a qualified electrician.

If you've checked all of the above and the heater still doesn't warm up, contact us so we can help diagnose the issue.

My HUUM electric sauna heater is heating too slowly. Why?

Slow warm-up times are usually due to one of the following:

Heater is undersized for the room volume.
One or more heating elements have failed, reducing total output.
Sauna room is poorly insulated or vented improperly.
Too many or wrong-sized stones, restricting airflow.

Verify that your heater's kW rating matches your room volume, and confirm proper stone loading and ventilation. If the issue continues, contact our team.

Installation

How do I install a HIVE electric sauna heater?

HIVE heaters are floor-mounted units that should be installed by a qualified electrician in accordance with local codes. Key steps include preparing the foundation, securing the heater to the floor, wiring power supply lines per the included diagram, installing the temperature sensor on the opposite wall, and loading sauna stones evenly around the heating elements without packing them tightly. Always follow the manufacturer's installation manual that ships with the product. For full instructions, see the included guide or contact us for assistance.

How should sauna stones be placed in HUUM sauna heaters?

Stones must be placed loosely so that air can circulate freely between them, allowing efficient heating. Place larger stones at the bottom and smaller stones at the top. Stones should not be wedged or stacked tightly, and they should not press against the heating elements. The stones must completely cover the heating elements, but excess stones above the rim are not necessary and can restrict airflow.

How do I install a HIVE Mini electric sauna heater?

The HIVE Mini installs similarly to the standard HIVE: it must be floor-mounted, wired by a licensed electrician, and paired with the temperature sensor placed on the opposite wall about 15 cm from the ceiling. Refer to the included manual for exact dimensions, minimum safety distances, and stone loading instructions.

How do I install a STEEL electric sauna heater?

STEEL heaters are wall-mounted units that require a sturdy, level wall surface and proper clearance from combustible materials. Installation includes mounting the bracket, securing the heater, connecting power, installing the sensor, and loading stones. All electrical work must be performed by a qualified electrician.

How do I install a STEEL Mini electric sauna heater?

The STEEL Mini follows the same wall-mounted installation procedure as the standard STEEL but with smaller clearances. Consult the included manual for exact dimensions, and use a qualified electrician for all wiring.

How do I install a CLIFF electric sauna heater?

CLIFF heaters are floor-mounted, designed for larger rooms, and require careful placement to maintain safety distances from walls, benches, and ceilings. Follow the installation diagram included with your unit, hire a licensed electrician for power connections, and ensure proper ventilation in the sauna room.

How do I install a CLIFF Mini electric sauna heater?

The CLIFF Mini is a compact floor-standing unit installed like the full-size CLIFF. Maintain safety distances, secure to the floor, and have a qualified electrician complete the wiring.

How do I install a HIVE Wood wood-burning stove?

HIVE Wood stoves require a non-combustible foundation, a proper chimney installation, and adequate clearance from combustible surfaces. The chimney must meet local building codes and be installed by a qualified professional. Follow all clearance specifications in the manufacturer's manual, and ensure adequate ventilation and combustion air supply.

How do I install a HIVE Heat wood-burning stove?

HIVE Heat installation follows the same general guidelines as the HIVE Wood: non-combustible base, certified chimney installation, proper clearances, and adequate air supply. Always follow local fire codes and the installation manual provided with the product.

How do I install a DROP electric sauna heater?

The DROP is a floor-mounted electric heater installed similarly to other HUUM electric models. Have a licensed electrician complete the wiring, mount the unit per the manufacturer's instructions, position the sensor correctly, and load sauna stones loosely around the heating elements.

How do I install the UKU sauna control system?

UKU control panels are typically installed outside the sauna room on a dry wall, with the controller box mounted in a separate location. The temperature sensor is installed inside the sauna on the wall opposite the heater. Wiring must be completed by a qualified electrician according to the included diagram. The Wi-Fi-enabled version (UKU WiFi) can then be paired with the HUUM mobile app.

Before Buying

What should I consider before buying a HUUM sauna heater?

When choosing a sauna heater, consider the following:

Room size: Match the heater's kW rating to the volume of your sauna room. Undersized heaters will heat slowly; oversized heaters waste energy.
Power supply: Verify that your home or facility can supply the required voltage and amperage. Electric heaters typically need a 240V circuit.
Heater type: Choose between wall-mounted (STEEL, STEEL Mini), floor-mounted (HIVE, CLIFF, DROP), or wood-burning (HIVE Wood, HIVE Heat) based on your space and preferences.
Controls: Decide whether you want manual controls or a Wi-Fi-enabled UKU controller with app integration.
Aesthetic: HUUM heaters have distinctive designs — pick the one that fits your sauna's style.

Our team is happy to help you find the right heater for your space. Call (949) 688-4198 or email sales@thesaunasolutionllc.com for personalized recommendations.

What should I consider when choosing a sauna controller or the UKU system?

Things to consider when selecting a controller:

Compatibility: Verify that the controller works with your heater model.
Smart features: The UKU WiFi version allows remote control via the HUUM mobile app, scheduling, and temperature monitoring.
Local vs Wi-Fi: If you don't need remote control, the UKU Local version offers the same functionality at a lower price.
Installation requirements: Confirm wiring requirements and mounting locations for both the control panel and the sensor.

User Guides

How do I use HUUM sauna controllers?

HUUM controllers feature a simple touch or knob interface that allows you to set the target temperature, timer, and other functions. The display shows the current sauna temperature and remaining session time. For full operating instructions, refer to the user manual that came with your controller.

How do I access the controller menu and use the Steamer function?

Press and hold the menu button on your UKU controller to access advanced settings. From the menu, you can enable the Steamer function (for compatible heaters with built-in steamers) and adjust humidity levels. Make sure the steamer reservoir is filled with water before activating.

How do I access the controller menu and use the Lighting function?

If your sauna is wired with compatible lighting, you can control it directly from the UKU controller. Enter the menu, navigate to Lighting, and turn it on or off, or set scheduled automation through the mobile app.

How do I access the controller menu and use the Child Lock function?

The Child Lock function prevents unintended use of the controller. To enable it, access the menu and toggle Child Lock on. When activated, a code or button combination is required to make changes — keeping the sauna safe from accidental operation.

How do I connect my sauna control panel to the HUUM mobile app?

To pair your UKU WiFi controller with the HUUM app:

Download the HUUM app from the App Store or Google Play.
Create an account and log in.
Put your controller into pairing mode (see the controller manual for the exact procedure).
Follow the in-app prompts to add your device and connect to your 2.4 GHz Wi-Fi network.

Once paired, you'll be able to control your sauna remotely.

Mobile App

How do I set up the HUUM mobile app?

Download the HUUM app, create an account, then follow the in-app instructions to add your UKU WiFi controller. You'll need a 2.4 GHz Wi-Fi network, your home network password, and your controller in pairing mode.

How do I connect the UKU WiFi control system to the HUUM mobile app?

Make sure the controller is powered on, in pairing mode, and within range of your Wi-Fi router. In the HUUM app, tap "Add Device," select UKU WiFi, and follow the prompts to enter your network credentials and link the device to your account.

Can I upgrade my UKU Local controller to add Wi-Fi connectivity?

Yes — if you have a UKU Local controller, you can purchase the UKU WiFi upgrade kit to add wireless connectivity. The kit includes the necessary module and wiring instructions. We recommend having an electrician perform the upgrade if you're not comfortable working with the controller's wiring.

How do I use the HUUM mobile app?

The HUUM mobile app lets you turn your sauna on and off remotely, set the target temperature, schedule heating sessions, view session history, and monitor temperature in real time. Make sure your controller is paired and your phone has an active internet connection.

General FAQs

Should I use protective railings with my sauna heater?

Yes. Protective railings around the heater help prevent accidental contact with the hot surface and stones, which is especially important when children, guests, or unfamiliar users are present. We strongly recommend installing the railing made specifically for your heater model.

What are the principles of throwing water on sauna stones?

Throwing water (löyly) onto hot sauna stones creates steam, which raises humidity and intensifies the sauna experience. Always use clean water (a wooden ladle and bucket are traditional) and pour small amounts at a time — about one ladle per session is typical. Avoid pouring excessive amounts of water at once, as this can damage the heating elements over time and cause uncomfortable temperature swings.

What maintenance do electric sauna heaters need?

Electric sauna heaters require minimal maintenance, but you should:

Inspect and rearrange the sauna stones at least once a year to prevent them from compacting and restricting airflow.
Replace cracked or crumbling stones promptly.
Check heating elements periodically for visible damage.
Wipe down the heater shell with a soft, damp cloth when cool.
Avoid using harsh chemicals or abrasive cleaners on the heater.

How often should heating elements be replaced?

Heating element lifespan depends on usage, water quality, and how often water is thrown on the stones. With normal use, elements typically last several years. If you notice longer heat-up times, reduced output, or a visibly damaged element, it's time to replace it. Always use replacement elements approved for your heater model and have them installed by a qualified electrician.

Can the heater be used if a heating element is broken?

No. Operating a heater with a damaged heating element can cause uneven heating, electrical damage, or a safety hazard. Replace the failed element before continuing to use the heater.

How do I heat a HIVE Wood or HIVE Heat wood-burning stove?

To heat a HIVE Wood or HIVE Heat stove:

Open the air intake fully.
Place dry kindling and small pieces of wood inside the firebox.
Light the fire and allow it to build before adding larger logs.
Once the fire is established, add larger pieces of dry hardwood gradually.
Adjust the air intake to control the burn rate and temperature.

Only burn dry, seasoned hardwood. Never use accelerants, treated wood, or trash in the stove.

What maintenance do HIVE Wood and HIVE Heat wood-burning stoves need?

Wood-burning stoves should be inspected and cleaned regularly. Remove ash after each use, check the firebox and door gasket for damage, clean the chimney at least once per year (or more often depending on use), and inspect the stones annually. Always follow the manufacturer's maintenance schedule and local fire codes.

How should I keep my sauna clean?

After each session, wipe down benches and floors to remove sweat and moisture, and ventilate the room to allow it to dry fully. Use only mild, sauna-safe cleaners on wood surfaces — harsh chemicals can damage wood and leave odors that intensify when heated. Sand or replace bench wood as it ages, and address any signs of mold or mildew immediately.

How many sauna stones should I use in a HUUM heater?

Each HUUM heater has a specific stone capacity listed in its manual. Use enough stones to fully cover the heating elements but avoid overpacking. Overfilling can restrict airflow and reduce heater efficiency. Refer to your model's instructions for the exact recommended quantity.

Which sauna stones are suitable for HUUM heaters?

Use high-quality igneous stones such as olivine diabase or peridotite, which are dense, heat-resistant, and resistant to cracking. Avoid soft or porous stones, river rocks, and decorative stones, which can shatter when heated. HUUM-approved stones are the safest option.

How should sauna stones be prepared before use?

Before placing new stones in your heater, rinse them thoroughly with clean water to remove any dust or fine particles that could create odor or smoke during the first use. Allow them to drain before loading.

How should sauna stones be placed in a HUUM heater?

Place larger stones at the bottom of the heater and smaller stones on top. Arrange them loosely so that air can circulate between them. Ensure all heating elements are fully covered, but do not stack stones higher than the heater's rim or wedge them in tightly.

How often should sauna stones be replaced?

Stones gradually wear down from heating and cooling cycles. Inspect them at least once a year. Replace any stones that are cracked, crumbling, or crumbling, and rearrange the remaining ones to maintain proper airflow. Most stones need full replacement every 1–3 years depending on use frequency.

Still have questions? Contact The Sauna Solution LLC at sales@thesaunasolutionllc.com or call (949) 688-4198. Our team is available Monday through Friday, 9:00 AM – 5:00 PM PST.