Estonian Saunas

We export Estonian design, technology & traditions.

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Estonian Saunas OÜ

Estonia: Tondi 22-4, Tallinn.
Registry code: 12986006

VAT code: EE101870812

HUUM buyer's guide

1.  Choose your style

2. Calculate the right HUUM stove size

3. Select your HUUM stove from our Estonian Saunas online store

4. Choose your UKU control system (if electric HUUM stove)

5. Confirm your order with us

6. Pay our invoice

7. Receive your HUUM stove delivery

8. Install your HUUM stove

1.  Choose your style

HUUM stoves are available as both a wall-mounted option known as Drop and an upright free-standing option known as HIVE. The Drop is available as an electric stove, while the Hive is available as either an electric or a wood-fired stove. Most wood-burning stoves have their door for firewood inside the hot room, but there is also one that has the door through the wall in the next room.

We deliver wood-burning HUUM stoves worldwide and we deliver electric HUUM stoves everywhere in Europe (except Poland, Norway & Sweden where you can find alternative suppliers through If you would like to order from elsewhere, email us at and we’ll either let you know if we can help or offer some advice. Electric HUUM stoves will be ready for North America in 2020 then the next priority is Japan.


Please note: If you live in Germany or Austria and you want a wood-burning stove then you’ll need to let us know so we can deliver a model with the Bimsch certification, which HUUM has made especially for Germany and Austria. And if you live in the UK then you can visit where you can pay locally in pounds and get more specialist local support, such as with UK wiring for HUUM electric stoves.

2. Calculate the right HUUM stove size

Next, you'll need to determine how much output power you'll need from your sauna stove in order to heat your sauna hot room properly. HUUM stoves can be used in sauna hot rooms ranging from 3 to 35 square metres in size. The output power of sauna stoves is measured in kW (for both electric and wood-fired stoves). As a general rule, you will need about 1 kW of power for every 1 cubic metre of room that you are heating, although slightly more if there are windows, a glass door, or heat-storing surfaces such as brick, concrete or large logs. If you have any doubt then HUUM has a great calculator on their website here. For most sauna hot rooms though that are built in a classical style with almost all wooden surfaces, this table shows what stoves are suitable for you based on the size of the room:

  • 3 to 7 square metres: Drop 4.5 kW

  • 5 to 10 square metres: Drop 6 kW

  • 6 to 10 square metres: Hive 6 kW

  • 8 to 15 square metres: Drop 9 kW

  • 9 to 15 square metres: Hive 9 kW

  • 12 to 25 square metres: Hive 12 kW

  • 15 to 30 square metres: Hive 15 kW

  • 18 to 35 square metres: Hive 18 kW

Fun fact: Sauna is 'saun' in Estonian, but we consider this to be so much more than just a hot room. It's entire building and experience around it too. That's why we refer to the hot room seperately and call it 'leiliruum' in Estonian. 'Leil' is the name for steam that rises from the stones in a sauna. The Finns also have a word for that:'löyly'.

3. Select your HUUM stove from our Estonian Saunas online store

Simply add your chosen stove to your basket. All our stoves come with a complete set of stones, which are carefully selected grey rounded volcanic stones gathered in Finland and known as olivine diabase. These stones are recommended for HUUM stoves for both their visual aesthetic as well as the quality of the heat and steam that they produce. When comparing us to alternative sauna stove suppliers, note that their prices may not include any stones and, if they do, may not include the same quality of stones. We also include an air tunnel for all electric Hive stoves, which improves air circulation within the stones. If you'd like to purchase a stove from us without stones then send us an email and we can make a special arrangement.


These are the quantities of stones required to fill each HUUM stove:

  • Drop electric stoves (all): 60 kg of 5 to 10 cm diameter stones.

  • Hive electric stoves (6 & 9 kW) without air tunnel: 120 kg of 10 to 15 cm diameter stones and 30 kg of 5 to 10 cm diameter stones.

  • Hive electric stoves (6 & 9 kW) with air tunnel: 80 kg of 10 to 15 cm diameter stones and 30 kg of 5 to 10 cm diameter stones.

  • Hive electric stoves (12, 15 & 18 kW) without air tunnel: 220 kg of 10 to 15 cm diameter stones and 30 kg of 5 to 10 cm diameter stones.

  • Hive electric stoves (12, 15 & 18 kW) with air tunnel: 180 kg of 10 to 15 cm diameter stones and 30 kg of 5 to 10 cm diameter stones.

  • Hive wood-burning stoves (13 kW): 90 kg of 5 to 10 cm stones.

  • Hive wood-burning stoves (17 kW): 100 kg of 10 to 15 cm stones and 30 kg of 5 to 10 cm stones.

4. Choose your UKU control system (if electric HUUM stove)

If you have chosen an electric stove then you'll also need a control system for it. This will include a wall-mounted controller known as UKU, which is placed outside the sauna, and available in a range of colours. That colour is your first decision. We provide a black wall-mounted controller as standard, but you can pay slightly more for one in white, sand, metallic, or wood. 


Your second choice is whether to have a direct connection, a GSM (mobile connection with a embedded SIM which comes with an annual fee) or a WiFi connection (which we recommend and has no annual fee). If you choose to have a GSM or WiFi-connected sauna then you will also have access to the HUUM mobile app, which includes the same controls. Both the wall-mounted UKU controller and the mobile app will enable you to not just switch your sauna on and off, but also see the current temperature, choose your target temperature, and set a timer. The control system also includes safety features, including an automatic stove shutdown for overheating or when the door is open. Simply choose the colour of your UKU and the type of connection then add them to your basket.

5. Confirm your order with us

Proceed to our online checkout with your stove and, if you have an electric stove, then your UKU control system too. You'll then need to enter your name and contact details to submit your order. We don't take any payment at this stage though and you are still under no obligation to make the purchase. That's because we first have to calculate the shipping costs for you. We use reputable couriers, most commonly UPS and DPD, and pass on their cost without any markup. If you have your own preferred courier then we'd happily use them instead. Just note that stoves with a complete set of stones have to be delivered on a pallet. Finally, note that all our prices include VAT so if you are a VAT registered company then let us know and we can deduct the VAT too. We'll respond to your order within 24 hours (although usually much sooner). By the way, we only use the information you submit to deliver your order then check back with you once in future by e-mail to see how happy you are with your sauna. We don't give anyone else your data or use it for any future marketing.

6. Pay our invoice

Once you've agreed the final price, we will issue an invoice to either you or your company so you can make the payment to our Estonian bank account with LHV. We recommend that you use TransferWise for cross-border payments because then you can pay into our Estonian account without bank fees. Here's our TransferWise sign up link. Once the payment is received (which is usually instantly) then we'll dispatch the order as fast as possible.

Fun fact: TransferWise is also a British-Estonian company and was created by former Skypers. Yes, Skype started in Estonia! We use TransferWise because they have the best service for international banking and money transfers without bank fees. As it happens though, they also share our love of saunas and have a sauna with a HUUM stove in their London office!

7. Receive your HUUM delivery

Once your payment is received, it usually takes about a week for your HUUM delivery to arrive at your address. We'll pass on any specific delivery instructions to the courier and also give you the tracking number so you can see when it's arriving. The delivery driver will have your mobile phone number in case there are any issues on arrival and that's the only reason we ask for your mobile number.


8. Install your HUUM stove

A wood-burning stove must be build in compliance with local building regulations related to fire safety so check with your local council about any rules that might apply. An electric sauna stove and control system should always be installed by a certified electrician. For most electricians, the HUUM stove shouldn't be too problematic. However, if they are unfamiliar with the installation of electric sauna stoves then we'd happily provide them with further guidance, including by speaking to them directly on your behalf. Note that heatproof cables will be provided by the electrician, as is standard, because the length is entirely dependent on your own setup. 

Finally... we'd love to see the saunas being heated by our HUUM stoves so please do send us any pictures in future!

Ready to get started? Head over to our online store or drop us an email at