Garden sauna and hot tub: one set, three types of sauna
The customer starts with the set: a sauna with a hot tub next to it, the sauna only (the “No hot tub” option) or the hot tub only (the “No sauna” option). The sauna stands on the left and the hot tub on the right, with a walkway between them. The customer can choose from the three types of garden sauna that Polish manufacturers sell: the barrel, built from staves into a round cross-section, the quadro, built from staves into a rectangular cross-section with rounded upper corners, and the modern sauna with insulated walls, a mono-pitch roof and a glazed front.
Sauna and hot tub dimensions
The sauna length is set with a slider or typed in centimetres, in 10 cm steps. This is the length of the sauna body: the covered porch stands in front of the front wall and is not included. In the “Sauna” step, dimension lines for length, width and height appear on the model.
| Sauna | Width | Body length | Increment |
|---|---|---|---|
| Barrel sauna | Ø 2.0 m or Ø 2.2 m | 2.0–6.0 m | 10 cm |
| Quadro sauna | 2.2 m | 2.2–4.0 m | 10 cm |
| Modern sauna | 2.28 m | 2.3–3.6 m | 10 cm |
The hot tub has a liner diameter of 160–220 cm, in 20 cm steps, and is 16 cm wider with its cladding:
| Liner diameter | Diameter with cladding |
|---|---|
| 160 cm | 1.76 m |
| 180 cm | 1.96 m |
| 200 cm | 2.16 m |
| 220 cm | 2.36 m |
- Layout: “Hot room only”, a single room, or “With anteroom”, meaning with a changing room separated from the hot room by a partition with a door. The anteroom needs a longer sauna: if the chosen layout does not fit, the configurator lengthens the sauna or changes the layout and says what it changed.
- Covered porch: on the barrel and the quadro, extended staves cover a porch with two benches, while the modern sauna has a canopy on two posts over a deck.
- Front: a glass door in a timber end wall, a half panorama, meaning glass from bench height upwards, or a panoramic front made entirely of glass. On the modern sauna, the glass door comes with a window as well, and the half panorama starts at sill height.
- Roof: the barrel and the quadro have a timber roof or bitumen shingles, and the modern sauna has a mono-pitch roof.
- Wood: spruce, thermowood or Canadian cedar; the hot tub cladding is made of the same wood.
Heater output matched to the hot-room volume
The configurator does not leave the heater output to guesswork. It calculates the hot-room volume from its cross-section and length, then adds 1.2 m³ for every square metre of glass in the hot room’s walls and door, because glass loses heat faster than wood. Finally, it picks the smallest heater whose volume range covers the result: an electric heater from 6 to 15.8 kW or a wood-fired heater rated at 16.5 or 24.1 kW. The summary shows the heater output, the hot-room volume and the effective volume, which includes the allowance for glass.
That is why choices in other steps change the heater. A panoramic front on a sauna without an anteroom can push the output up by one model, while an anteroom shortens the hot room and takes the front glass out of the calculation, so the heater is sometimes smaller. In the barrel, the heater stands by the rear wall, opposite the hot-room door; in the quadro and the modern sauna, it stands in the corner by the door wall. The configurator places the heater at the clearances from its data sheet, and if a bench, wall or ceiling comes closer, it adds a note about a heat shield.
Chimney above the ridge
The wood-fired heater comes with a steel chimney. The configurator routes it through the roof and ends it at least 0.60 m above the ridge, following the rule in the Polish standard PN-89/B-10425 for combustible roof coverings, and in the “Heater” step it shows this height with a dimension line on the model. A steel chimney is installed according to the manufacturer’s instructions, so the summary notes that a chimney sweep will check the height, including when a house or tree stands closer than 10 m to the chimney.
Garden hot tub: liner, massage, heating and cover
- Liner: PP (polypropylene) with straight walls or fibreglass with seats, in white, graphite or blue.
- Massage: no massage, air massage with jets in the floor, or hydromassage with jets in the liner walls.
- Heating: an external stove with a chimney next to the tub, an internal stove behind a protective guard, or an electric heater.
- Thermal cover: a button in the “Hot tub” step closes it over the tub and opens it again.
- LED colour: the LED strip under the sauna benches and the LEDs in the hot tub glow in the same colour: warm white, white, ice blue, turquoise or violet.
Movement only on click
Buttons in the steps move parts of the set: the sauna door opens outwards, the heater is fired up until the embers glow, the “Evening / day” button switches on the LEDs under the benches and in the hot tub, and the cover closes the tub and opens it again. Nothing moves on its own: there is no looping smoke, steam or flames. When the scene is still, it does not render new frames, so an open browser tab does not drain the phone’s battery.
How we calculate the price
The indicative price updates with every choice, and the “How is it priced?” button expands all line items with their calculation. The sauna price is the base price for its type plus a rate per running metre of length, and the Ø 2.2 m barrel costs 12% more than the Ø 2.0 m barrel. Thermowood adds 25% and cedar 45% to the sauna price. The anteroom, covered porch, front glazing, bitumen shingles, heater (a wood-fired one with its chimney) and sauna LEDs are priced separately, as are the hot tub’s diameter, fibreglass liner, massage, heating, thermal cover and LEDs. Delivery with installation is a fixed amount for each product in the set. Prices include VAT.
An example from the demo price list: a Ø 2.0 m barrel, 2.8 m long, without an anteroom, with a glass door and an 8 kW electric heater costs PLN 21,700, made up of a PLN 9,000 base price, 2.8 running metres at PLN 3,000 each, PLN 2,300 for the heater, PLN 800 for the LEDs and PLN 1,200 for delivery with installation. The prices in the demo are examples. In a live deployment, the configurator calculates them from the manufacturer’s price list, with its options and installation rates.
Formalities: sauna notification, hot tub and heater power supply
Under the Polish Construction Law (as of 7 January 2026), a freestanding sauna with a footprint of up to 35 m² usually requires a building notification to the district office (Art. 29(1)). A hot tub is not a building and usually requires neither a permit nor a notification, just like a swimming pool of up to 50 m² (Art. 29(2)(13)). An electric heater rated above 5 kW usually needs a three-phase 400 V supply and a separate circuit with a residual current device (RCD).
The configurator shows these sentences in the summary, with the note “check locally” or “check with an electrician”. This is information, not legal advice: the authority decides how a structure is classified, and an electrician decides on the installation.
What the manufacturer and the dealer get
Every configuration has its own link that restores all the choices, so the sales rep opens exactly what the customer set up. The summary collects the sauna type and dimensions, the layout, the heater with its output and volume, the chimney, the hot tub with its heating, cover, water volume and filled weight, the LED colour, the formalities and the price with a list of line items. In a live deployment, the configuration can be passed to a CRM system or to a dealer in the customer’s region, and the price list, options and rules come from the manufacturer.
If you also sell patio covers, take a look at the 3D louvred pergola configurator, while garden gazebos are shown in the garden gazebo configurator. You can work out an indicative implementation cost with the configurator cost estimator.