Product Description
Nordic Square Mobile Sauna: plan the sauna and trailer together
The TimberIN Nordic Square Mobile Sauna™ is a rounded-square outdoor sauna on an optional road-legal, braked two-axle trailer: 2, 3, 4 or 5 m long, in spruce or Thermowood, for 2–10 people. It is the same sauna as our Nordic Square Barrel™, built to move between locations, with more upright walls and a curved roof than a round barrel. One Harvia heater is included: the M3 wood-burning stove with chimney or the Cilindro PC90 9 kW electric heater, with upgrades to choose from. Compare it with our other mobile saunas.
The starting price is for the sauna without a trailer. The braked two-axle trailer (EU category O2, up to 2,000 kg total weight, £4,450) is offered for every length, 2–5 m, and is chosen in the Trailer group.
Four lengths and their seating capacity
| Selected total length | Undivided-room capacity |
|---|---|
| 2 m | 2–4 people |
| 3 m | 4–6 people |
| 4 m | 6–8 people |
| 5 m | 8–10 people |
These capacities apply to an undivided sauna room and are not a guarantee of identical comfort for every group. User size, spacing and the final bench layout matter.
Changing rooms use the selected length
Included equipment and base choices
| Lengths and timbers | 2, 3, 4 or 5 m; spruce or Thermowood |
|---|---|
| Included openings | An entrance door with a small window and one standard window (about 450 × 640 mm); 50% or 100% panorama at no extra cost; a side entrance is an option (£990) |
| Included interior | Benches and ventilation |
| Included heating choice | One Harvia heater, chosen in the Heater group: the M3 with chimney or the Cilindro PC90 9 kW at no extra cost, or an upgrade |
| Roof | Black, brown or green shingles |
| Delivery | Factory assembled only; crane or forklift unloading required |
| Trailer | Optional braked two-axle trailer (EU category O2, up to 2,000 kg total weight), £4,450, for every length |
Exactly one heater is chosen, wood-burning or electric: M3 and PC90 are alternative base heaters, not two appliances included together. Photographs show different configurations; the accepted order determines what is supplied.
Wood-fired and electric Harvia heating
Wood heating
M3 is the included wood route for a sauna room of approximately 2–4 m. M3 SL moves log loading outside. The 20 PRO and 20 SL are options for larger rooms of approximately 4–5 m; PRO loads inside and SL outside. Plan fuel handling, chimney position and protection from the exact manual.
Electric heating
The Harvia Cilindro PC90 9 kW with integrated controls is the included electric route for approximately 2–3 m rooms. Upgrades: the Cilindro PC90XW WiFi Steel 9 kW (£819) and the Legend PO110FC WiFi 10.8 kW in black (£1,190) for larger rooms. Confirm the size from the final hot-room volume.
| Heater | Loading or controls | Current room-length guide |
|---|---|---|
| Harvia M3 with chimney, 16.5 kW | Wood, internal loading | Included; approximately 2–4 m |
| Harvia M3 SL with chimney, 16.5 kW | Wood, external loading | Upgrade £590; approximately 2–4 m |
| Harvia 20 PRO with chimney, 24.1 kW | Wood, internal loading | Upgrade £680; approximately 4–5 m |
| Harvia 20 SL with chimney, 24.1 kW | Wood, external loading | Upgrade £880; approximately 4–5 m |
| Harvia Cilindro PC90, 9 kW | Electric, integrated controls | Included; approximately 2–3 m |
| Harvia Cilindro PC90XW WiFi Steel, 9 kW | Electric, digital controls with Wi-Fi | Upgrade £819; approximately 2–3 m |
| Harvia Legend PO110FC WiFi, 10.8 kW, black | Electric, digital controls with Wi-Fi | Upgrade £1,190; size it from the final hot-room volume |
The room-length guides do not replace the final calculation using heated volume, glazing and construction. A different heater can be discussed where the plan requires it.
Harvia lists the Cilindro PC90 and PC90XW for 400 V three-phase (3 × 16 A fuses, 5 × 2.5 mm² cable) and the PC90 also for 230 V single-phase (1 × 40 A, 3 × 10 mm²); the Legend PO110FC is a 400 V three-phase heater. A qualified electrician must confirm the electrical supply, cable, protection and isolation from the actual heater manual and site installation. For wood heating, the stove, flue, protection and clearances must follow the supplied instructions.
Glazing, access and interior layout
Choose one window: the standard window (about 450 × 640 mm) or panorama glass at 50% (about 1,110 × 2,260 mm) or 100% (about 2,130 × 2,260 mm), both at no extra cost. On the 3, 4 and 5 m models a glazed door may separate the changing room and hot room. The entrance door with a small window is standard; a side entrance is available at the displayed £990 supplement when it suits the layout better than end access.
A custom arrangement can be discussed from a sketch. Decide the partitions and entry before finalising capacity and heating. No undocumented thermal performance is attributed to a panorama percentage.
Accessories and finish
Complete insulation with decorative wood panelling is an option for your length: £1,800 for 2–3 m, £2,880 for 4–5 m. Other options are steps with a special fixing (£290), under-bench LEDs (£290), two Harvia lamps above the entrance door (£290), a stainless steel water tank for the wood-burning heaters (£280) and a wooden fence in front of the heater (£90). Black, brown and green roof tiles are available. Most option groups accept several choices or “None”; trailer, heater, window, roof colour and shipping take one. The option list and accepted order take precedence over photographs.
Choose the trailer from the completed configuration
| Trailer option | UK total-weight label | Decision |
|---|---|---|
| Braked two-axle platform trailer with floor (EU category O2) | Up to 2,000 kg; £4,450 | For every length, 2–5 m; the 2 m sauna uses the 3 m trailer |
The trailer length is matched to the sauna length. When the sauna is ordered with the trailer, it is delivered mounted on it: because of the truck’s height limit the trailer wheels are removed for transport, and a crane or forklift on site lifts the sauna off the truck, refits the wheels and sets the trailer down. The trailer technical sheet is in the Technical sheets tab.
Original trailer documents are supplied. Confirm any registration requirements, towing-vehicle suitability, licence, insurance and destination rules from the final unit documentation. The arrangements must be agreed for the actual country of use.
Factory-assembled delivery
The sauna is supplied factory-assembled; there is no flat-packed kit. Delivery is quoted separately from the postcode, and a crane or forklift must be arranged on site. Check the route to the unloading point and final location using the completed unit dimensions. Agree the lifting method before dispatch.
Before production, bring together the interior drawing, remaining hot-room length, heater, glazing, trailer specification, final mass and dimensions, electrical or chimney requirements and unloading arrangements. Approved plans and equipment manuals govern critical dimensions and installation details.
Frequently asked questions
The selected configuration, final drawing and accepted order documents take precedence for the product supplied.
Which lengths and timbers are available?
Four total lengths — 2, 3, 4 and 5 m — in spruce or Thermowood.
How many people can use it?
For an undivided sauna room: 2–4, 4–6, 6–8 or 8–10 people respectively. Partitions reduce practical capacity.
Does a changing room add to the total length?
No. A 1 m changing room (3 m model) or a 1 or 1.5 m changing room (4 and 5 m models) uses part of the selected total length, reducing the heated room and bench space.
What equipment is included?
Benches, an entrance door with a small window, one standard window (about 450 × 640 mm), ventilation and one Harvia heater chosen in the Heater group (M3 or PC90 at no extra cost, or an upgrade).
Are M3 and PC90 included together?
No. Choose one M3 wood stove with chimney or one PC90 9 kW electric heater as the included base route.
Which wood heaters are available?
M3 (included) or M3 SL (£590) for approximately 2–4 m sauna rooms, and 20 PRO (£680) or 20 SL (£880) for approximately 4–5 m rooms. SL versions load from outside; confirm suitability from the final heated volume.
Which electric heaters are offered?
The Harvia Cilindro PC90 9 kW with integrated controls is included, for approximately 2–3 m hot rooms. Upgrades: the Cilindro PC90XW WiFi Steel 9 kW (£819) and the Legend PO110FC WiFi 10.8 kW in black (£1,190). Confirm final sizing from the hot-room volume.
Which glazing and access options are offered?
One window: standard, 50% or 100% panorama, at no extra cost. On the 3, 4 and 5 m models: one changing room and a glazed dividing door (with a changing room). The side entrance is an option (£990).
Is the trailer included in the starting price?
No. The braked two-axle trailer is an option (£4,450); without it the sauna is supplied as a static sauna.
Which trailers are offered?
One braked two-axle platform trailer with floor, EU category O2, up to 2,000 kg total weight, for every length (£4,450). It comes with a Certificate of Conformity for registration.
Are trailer documents supplied?
Original trailer documents are supplied. Confirm the requirements for the intended destination and the final unit, including towing suitability, insurance and any registration.
How is the sauna delivered?
Factory assembled (no kit). With the trailer it arrives mounted on it, wheels removed for transport; a crane or forklift is needed on site. Transport is quoted separately from the postcode.
We’ve received the sauna today, it all looks great! We’ve attached some photos which may be useful for your marketing.
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