Narvi Ultra Small Commercial Electric Sauna Heater

Designed for daily use in domestic and small commercial saunas.

Note: Sauna stones to be purchased separately

This heater requires up to 30kg of sauna stones. We recommend using 5-10cm Olivine Diabase or Vulcanite Sauna Stones for optimal performance.

The Narvi Ultra Small commercial electric sauna heaters are ideal electric heaters for small commercial saunas, fitted in gyms, spas, hotels and wellness retreats, as well as in domestic saunas with daily use. They are the perfect choice for demanding usage requirements, such as being active all day, every day with generous amount of water poured over the sauna stones. The Ultra Small combines Narvi’s exceptional löyly quality with their renowned durability to create the quintessential commercial heater. When it comes to commercial sauna heating solutions, there is no better option that the Narvi Ultra series - Small, Ultra or Ultra Big.

The Ultra Small is stainless steel inside and out with some of the highest material thicknesses on the market. The elements have a market leading thickness and grade, making this the ideal heater for frequent use where water can and should be poured over the stones. The Ultra Small is also available in a painted Black stainless steel option, ideal to suit a darker sauna aesthetic.

It is certainly true that there are sauna heaters and there are sauna heaters. This is also very much the case for commercial heaters. Most modern hidden heaters and commercial heaters simply act as a heater with no stones. This creates an unpleasant löyly, is nothing like the very pleasant Finnish sauna experience and is sadly the experience that many of the British public attribute to sauna from their brief encounter with their local health club. This heater will set your sauna apart from the competition by being one of the few real Finnish electric sauna heaters in the U.K. 

The Ultra series combines Narvi's renowned build quality and longevity, being with their market leading stone capacity to provide a commercial heater that is simply like no other. This makes a Narvi heater a highly economical and cost-saving choice when you compare their average lifespan with that of other brands. Show your customers what it means to relax and enjoy a true Finnish sauna, with a genuine Finish-made, Finnish-designed commercial sauna heater.

The sauna heater is controlled from a separate control panel that can be installed where required. These control units come in the following options:

Control Unit options for Narvi Ultra Small heaters:

Narvi Basic (N2014E)

Control panel T-2003 (Daily timer) for use with the Narvi Ultra. Contains required PSU and cabling for heater.

- Heater temperature control 40°C - 115°C (in 1°C steps)
- Temperature display 20°C - 125°C
- Preset time max 24h (in 1/2h steps)
- Switching-on time 4h, 6h or 12h
- Control for sauna room lights
- External temperature sensor for sauna room
- This is for those who use the sauna on a very regular basis (hotels, everyday same times)

Control panel B-2003 (Weekly timer) for use with the Narvi Ultra. Contains required PSU and cabling for heater.

- Heater temperature control 40°C - 115°C (in 1°C steps)
- Temperature display 20°C - 125°C
- 7 memory locations for switch on time (1 times a day)
- The programmed switch-on time can not be bypassed (the programming needs to be done again, if changes are wanted)
- Switching-on time 4h, 6h or 12h
- Control for sauna room lights
- External temperature sensor for sauna room
- Easier for fixing times, different settings for each day can be set.

There is also a thermostat unit, separate from the control panel that ensures that the sauna is kept at the desired temperature. 

Product Specification

*Safety distances to combustible materials

Warranty 

The warranty on this Narvi Sauna Heater is 2 years. The heating elements have a 6-month warranty.

About Narvi Oy

Browse our wider Narvi Sauna Heater collection. 

Product Disclaimers

All Narvi commercial sauna heaters are CE tested and bear the Finnish Key Flag Symbol. This is awarded to sauna heaters that are made and designed in Finland, where over 95% or more of the production must be within Finland itself. There are many brands that claim to be made in Finland but are actually made in the Far East or Russia and merely assembled or labeled in Finland. Watch out for these symbols as a mark of an authentic, Finnish-made, safe, quality product:

As part of Finnmark Sauna's Endurance Ethos, we only deal in products that are market leaders in quality. We commit ourselves to search exhaustively for the highest quality authentic Finnish sauna products.

Please note, we recommend that sauna equipment should be installed by a suitably qualified builder/electrician/fitter. Finnmark Limited accepts no liability for loss or injury caused by the incorrect installation or misuse of your sauna heater. Please Contact Us if you require information on our recommended fitters.

Christmas and New Year's Delivery Notice

Please note the following changes to our pallet shipping and DPD delivery service on parcel orders over the Christmas period.

Our warehouse is fully closed for operation over the following days: Wednesday 24 December, Thursday 25 December, Friday 26 December, Wednesday 31 December and Thursday 1 January.

Orders requiring a pallet

The last dispatch date for orders requiring a pallet is Friday 19th December 2025. Pallet orders dispatched on this day must be booked and signed for with one of our sales team representatives latest by close of business on Friday 19th December 2025.

Please note:

• Pallets dispatched on 19th December will be delivered on either 22nd or 23rd December, depending on your postcode
• We strongly advise against booking deliveries to the Highlands or Channel Islands close to the 19th December, as these may be held at the hub over the festive period
• There may be limited availability for pallet shipping on this day and we cannot guarantee that available slots remain

We will commence our regular pallet shipping service on Monday 5th January 2026.

If you have any questions about your pallet order, please get in touch with our Sales team: +44 (0) 20 8050 2895 or email info@finnmarksauna.com

Small Parcel Orders

DPD will deliver as normal up to and including Tuesday 23rd December 2025. Orders for next day delivery must be placed latest by 3pm.

Limited dispatch service: We will dispatch DPD orders on Monday 29th December and Tuesday 30th December only during the festive closure period.

We will commence our regular delivery service on Monday 5th January 2026.

*Estimated delivery times are applicable to the UK mainland only (excludes Highlands and Islands). Additional delays and charges will be required for Non-UK Mainland and Highlands and Islands deliveries.