The 2 person sauna: real sizes, types and UK costs

What "2 person" actually means

"2 person" is a capacity label, not a fixed footprint, so it pays to know what you are really buying. In practice a 2 person sauna means two people seated side by side on one bench, or one person able to lie down. It is not two full loungers, and if you want genuine room to recline you should check the internal bench length rather than trusting the headline number.

The compact indoor cabins built for this size are smaller than most people expect. They tend to sit around 1.2 to 1.3m wide, 1.0 to 1.2m deep and about 1.9 to 1.96m tall, which is close to a large wardrobe in floor area. A 2 person barrel is a different shape again: the curved body takes more ground than a boxy cabin of the same seating, and you need clearance around the rounded sides, so plan for more floor area than the footprint alone suggests.

The lesson from the table is simple: at the 2 person size, infrared and traditional cabins are compact indoor units, while a barrel is an outdoor structure that needs real garden space and a bit of room to walk around it.

Where a 2 person sauna fits: spare room, garage or garden

A big part of the appeal at this size is that a 2 person cabin can go indoors. An infrared or small traditional cabin is designed to live in a spare room, a garage or a large bathroom, which means no groundwork and no weatherproofing to worry about. Check two things before you buy: that the assembled cabin will pass through your doorways, and that the floor will take the size and weight once it is built.

A 2 person outdoor sauna is a different project. A barrel or outdoor cabin goes in the garden on level, drained ground with a clear route for delivery, and it needs somewhere sensible to sit where you can walk around it. If the garden is your plan, our guides to the barrel sauna, the outdoor sauna and the garden sauna go deeper on siting and weatherproofing, and how to build a sauna covers the groundwork.

Infrared, traditional or barrel: choosing the type

At the 2 person size there are three realistic choices, and they suit different homes and different budgets. Here is how they compare on the specs buyers actually weigh up.

A 2 person infrared cabin warms your body directly with infrared panels at a lower air temperature, so it feels milder than a traditional sauna. It is the compact, low-hassle option: around 1.3m wide, natural hemlock, and light enough on power that most cabins run from a standard domestic plug. Infrared also uses materially less electricity than a traditional heater for the same session, with one UK retailer estimating 60 to 75 per cent less. Best for: a reader who wants an easy indoor install and the lowest running cost. For the heat technology in detail, see our infrared sauna guide.

A small traditional cabin is a convection sauna with an electric stove: hotter, steamier and more authentic, reaching up to about 80°C. A 2 person cabin is around 1.2m wide in Canadian hemlock, with a roughly 3.5 kW single-phase heater that has to be hardwired. Best for: a reader who wants the classic high-heat experience and has an indoor or sheltered spot for it.

A 2 person barrel is the outdoor choice: a curved cedar or spruce cabin that heats fast because the round shape leaves less cold air to warm. A compact 2 person barrel runs a roughly 4.5 kW hardwired heater, and it suits a level garden and a couple who want an outdoor ritual. Be aware that barrels grow quickly once you go past two seats, in both footprint and heater size. Best for: a reader with garden space who wants a fast-heating outdoor sauna.

Does a 2 person sauna just plug in, or do you need an electrician?

This is the question that decides how much your install costs, and at the 2 person size the split is clear.

Most infrared cabins draw about 1.75 to 2.65 kW and run from a standard 13 amp domestic plug with no special wiring, which is a large part of their appeal. Even so, it is best to give a plug-in cabin its own circuit rather than sharing a socket with other appliances, and the highest-output full-spectrum cabins sit near the top of what a shared socket can take. Check the specific model's stated draw, and consider a dedicated circuit if it is at the higher end.

Small traditional cabins (about 3.5 kW) and barrels (about 4.5 kW) are a different matter. They must be hardwired to a dedicated circuit by a qualified electrician. That fixed electrical work is notifiable under Building Regulations Part P and must be carried out by a Part P-certified electrician, who will size the cable and, for an outdoor unit, run correctly buried armoured cable. Doing it yourself can void warranties and cause problems with your insurance, so budget for the electrician alongside the sauna itself.

For an outdoor unit there is planning to think about too. A 2 person barrel or garden cabin usually falls under permitted development in England, subject to size, height, position and boundary conditions, with tighter rules for conservation areas and listed buildings. Scotland, Wales and Northern Ireland differ. Treat this as a "check with your local planning authority" step rather than an assumption.

How long a 2 person sauna takes to heat up

Heat-up time is one of the everyday differences between the types. An infrared cabin is ready in about 10 to 15 minutes and is usable almost as soon as you switch it on, because the panels warm you rather than the whole room. A small traditional electric cabin takes roughly 25 to 45 minutes to come up to temperature. A barrel is around 30 to 45 minutes with an electric heater, and longer, up to about an hour, if it runs a wood-burner. If you value being able to use the sauna on a whim after work, that quick infrared start is worth weighing heavily.

What a 2 person sauna costs to buy

These are guide prices: typical UK costs seen on sellers' own sites, not live prices, and they sit before delivery, installation and any electrical work.

• 2 person infrared cabin: roughly £1,500 to £3,000 for mainstream units, with a measured mid-market cabin at £2,695. Premium full-spectrum brands run far higher, one measured at about £9,999, so infrared spans from an entry point around £1,800 all the way into five figures.

• 2 person traditional indoor cabin: from about £2,275 for a hemlock cabin with a 3.5 kW heater, typically £2,000 to £3,500 depending on the heater and finish.

• 2 person barrel: from about £2,425 for a compact spruce barrel, with a 2 to 4 person barrel seen at £3,761 on offer. Budget roughly £2,400 to £4,000 for a genuine 2 person outdoor barrel.

The headline is that all three types start in a similar band of roughly £1,800 to £2,700, and the biggest single swing in price is not the type but the finish and the heater: premium wood, glass fronts and full-spectrum infrared are what push a 2 person sauna towards the top of its range.

Guide prices, correct as of July 2026. These are typical UK costs, not live prices, and several rest on a single seller, so compare current prices before you buy.

What a 2 person sauna costs to run

Running cost comes down to the heater size and how long you run it, and here infrared has a clear edge because it draws less power and heats faster.

• 2 person infrared at about 1.75 to 2.65 kW: a 30-minute session uses roughly 0.9 to 1.3 kWh, which works out at about 22p to 33p a session at 24.5p per kWh. The maths is simply power in kW multiplied by hours multiplied by your unit rate.

• 2 person traditional or barrel at about 3.5 to 4.5 kW: once up to temperature the heater cycles on and off rather than running flat out, so a heat-up-plus-session draws less than the nameplate figure multiplied by time. A rough estimate is 3 to 4 kWh, about 75p to £1.00 a session. For scale, a larger 6 kW heater uses about 9 kWh, roughly £2.00 to £2.50 a session, or about £25 to £40 a month at three uses a week.

Treat these as illustrative estimates rather than measured figures: the infrared and small-cabin numbers are worked from the nameplate power, and only the 6 kW example is directly sourced.

Based on an electricity rate of about 24.5p per kWh (February 2026). The Ofgem energy price cap changes quarterly, so check the current rate before budgeting.

Pairing a 2 person sauna with an ice bath

A 2 person sauna is the natural heat half of a home contrast-therapy set-up, and the two-seat size suits a couple doing the ritual together. The idea is straightforward: warm through in the sauna, then finish on cold in an ice bath or cold plunge, repeating for a few rounds and always ending on cold.

The temperatures and times to work to are in the box below rather than in the text, so they stay consistent across the site.

If that is the plan, size the cold side for two people as well. Our ice baths hub covers cold plunges and chillers, and the sauna and cold plunge guide walks through building the full hot-then-cold ritual at home.

Where to buy

What the evidence says, briefly

Before you buy, it is worth being honest about the health claims. The best-supported benefit is cardiovascular: regular sauna use is associated with lower blood pressure and reduced cardiovascular risk. A 2018 review in Mayo Clinic Proceedings linked frequent Finnish sauna use, four to seven times a week, with lower blood pressure and reduced risk of cardiovascular disease, including sudden cardiac death and stroke. A separate 20-year Japanese study of more than 30,000 people found near-daily hot bathing associated with about 28 per cent lower cardiovascular disease risk and 26 per cent lower stroke risk.

Both are observational studies, not randomised controlled trials, and the researchers note that relaxation and healthier lifestyles among frequent users may explain part of the effect. So these are associations, promising but not proof that sauna heat alone causes the benefit. Just as importantly, a sauna will not "detox" your body or meaningfully burn fat, and it does not replace sleep or good nutrition. Buy one for the recovery, the ritual and the way it makes you feel, and treat the wider claims with a healthy scepticism.