Infrared sauna blanket and traditional sauna compared
An honest comparison between an infrared blanket at home, an infrared cabin and a traditional Finnish sauna. Where the blanket wins, where it clearly loses out and what suits your situation.
If you have health concerns or are unsure whether this suits you, talk to your GP or healthcare provider first. Effects differ from person to person.
In short
- An infrared blanket warms your body with radiation. A Finnish sauna warms the air first. Almost all other differences follow from that one point.
- For pure heat the sauna wins: 80 to 100 °C against 30 to 80 °C in a blanket. You will not get that feeling of hot air at home.
- For convenience the blanket wins: 10 to 15 minutes to warm up, an ordinary plug socket and then into a cupboard.
- A blanket is a session for one person. Sitting together, pouring water on the stones and rinsing off in cold water belong to the sauna, not the blanket.
- Per session a blanket uses about 0.2 to 0.4 kWh, an infrared cabin 0.8 to 1.8 and a Finnish sauna 4 to 8.
The three options at a glance
The question behind this page is almost always the same: can an infrared blanket at home replace a sauna? The honest answer is no, not completely. But that is not what the blanket is made for either. They are three different ways to get your body warm, and each of them does something else well.
Here we compare three things side by side. An infrared blanket that you unfold at home on the sofa or bed. An infrared cabin, usually a small wooden booth for one or two people with radiant panels on the walls. And a traditional Finnish sauna with a stove and stones, in which the air itself gets hot.
The table below is the short version. The rest of the page explains where those numbers come from and what you notice of them in practice.
The three options side by side
| Feature | Infrared blanket | Infrared cabin | Traditional Finnish sauna |
|---|---|---|---|
| What gets heated | Your body, through radiation | Your body and partly the air | The air in the cabin |
| Temperature | 30 to 80 °C | 45 to 60 °C | 80 to 100 °C |
| Humidity | Room air, humid under the blanket | Room air | 10 to 20 percent, briefly higher after pouring water |
| Warm up time | 10 to 15 minutes | 10 to 20 minutes | 30 to 60 minutes |
| Space | Folded away in a cupboard | 1 to 2 square metres in a fixed spot | 2 to 4 square metres in a separate room |
| Connection | Ordinary plug socket | Usually its own circuit | Often three phase power and an installer |
| Session length | 20 to 40 minutes | 20 to 40 minutes | 2 to 3 rounds of 8 to 15 minutes |
| Number of people | One | One to two | Two to six or more |
| Moving or taking along | Fits in a bag | Can be taken apart but heavy | Not realistic |
Guide values for common models. Brands and sizes differ, but the proportions between the three options hold up.
What stands out in that table straight away: the blanket and the sauna sit at opposite ends. The blanket scores on everything to do with ease of starting, the sauna on everything to do with experience and intensity. The infrared cabin sits right in between, and that is both its weakness and its strength. You need space for it, but you get freedom of movement in return.
Heat, air and how it feels
In a Finnish sauna you sit in hot air. The stove heats the stones, the stones heat the air and that air heats you. You therefore feel the heat everywhere at once, including in your nose and airways. That is exactly what sauna lovers enjoy about it and exactly what other people find stuffy.
An infrared blanket does the opposite. The heating elements give off far infrared radiation that warms your skin without making the air in your room hotter. Your head sticks out at the top, so you simply breathe room air. You can read exactly how that transfer works in how infrared heat works.
Under the blanket itself it does get humid. Your sweat stays in the enclosed space and that makes it feel clammy. That is a different kind of discomfort from the dry heat of a sauna, and which of the two you find more annoying is truly personal.
What you notice during a session
| What you notice | Infrared blanket | Infrared cabin | Finnish sauna |
|---|---|---|---|
| Air you breathe | Stays cool, your head is outside | Slightly warmed | Hot and dry |
| First sweat | After 10 to 20 minutes | After 10 to 15 minutes | After 5 to 10 minutes |
| Feeling on the skin | Warmth up close, fabric against you | Gentle radiant warmth from panels | Heat that comes from everywhere at once |
| Stuffy feeling | Rarely, unless you zip up high | Rarely | Often mentioned on the higher benches |
| Freedom of movement | Limited, you lie still | You can sit and shift position | Sitting, lying, pouring water, switching |
| Cooling down | Blanket off, stay lying down for a bit, lukewarm shower | Open the door and step out | A cold shower or plunge pool is part of it |
| What you do meanwhile | Listen to something or nothing | Read or listen | Talk, pour water, sit quietly |
The biggest differences in experience are not in the temperature, but in what you breathe in and how much you can move.
Sixty degrees in a blanket and sixty degrees in a sauna do not feel the same. In a sauna, that is the temperature of the air around you. In a blanket, it is the temperature of the surface right against your body, while the room stays normal. So do not compare the settings one to one. Start calmly at around 50 °C in a blanket, even if you are used to much higher numbers in the sauna.
Space, installation and warm up time
This is where the blanket makes the biggest difference, and it is also the reason most people look at one in the first place. A Finnish sauna needs a separate room, a good floor, ventilation and usually an installer to connect the stove. An infrared cabin is a lot simpler, but it then stands permanently in your home.
An infrared blanket asks for nothing. You unfold it on the sofa, plug it into an ordinary socket and switch it on. Afterwards you roll it up and it goes back in the cupboard. In a small flat, that is often the only thing that works.
What your home has to give up for it
| Point | Infrared blanket | Infrared cabin | Finnish sauna |
|---|---|---|---|
| Placement | Sofa, bed or floor | Fixed spot indoors | Separate room, often with a drain |
| Getting it ready | Unfold and plug in | Assemble in a few hours | Built or installed by a professional |
| Warming up before use | 10 to 15 minutes | 10 to 20 minutes | 30 to 60 minutes |
| Ventilation | Air the room afterwards | Recommended | Part of the build |
| Spontaneous use | Easy, even on weekdays | Reasonable | Takes planning |
| Storing after use | In a cupboard or under the bed | No, it stays in place | No, it stays in place |
| Moving house | Just take it with you | Take apart and carry | Stays behind |
In practice the warm up time decides how often something gets used. Waiting half an hour is a hurdle you rarely take on a weekday evening.
That warm up time is often underestimated. People with a sauna at home often use it at the weekend, because you have to set aside an evening for it. A blanket is ready within a quarter of an hour, so it becomes a habit sooner than an occasion. How often that works out in practice is covered in how often to use an infrared blanket.
There is a flip side too. A blanket lies on your sofa, which means your living room becomes your sauna room during the session. If you like to keep heat and daily life strictly separate, you will miss that with a blanket.
Energy use per session
With heat, energy use is almost entirely a matter of volume. You pay in energy for everything you heat up. A Finnish sauna heats a whole room, wooden walls and all, and then keeps it at temperature for an hour. A blanket only heats the thin layer of air and fabric directly around your body.
That is why the difference adds up so quickly. It is not about a more efficient technology, but about a much smaller space.
Power and use per session
| Heat source | Power | Warm up time | Approx. per session |
|---|---|---|---|
| Infrared blanket | 300 to 600 W | 10 to 15 minutes | 0.2 to 0.4 kWh |
| Infrared cabin for one to two people | 1.5 to 2.5 kW | 10 to 20 minutes | 0.8 to 1.8 kWh |
| Finnish sauna with electric stove | 6 to 9 kW | 30 to 60 minutes | 4 to 8 kWh |
Guide values with normal use. Once a heat source is at temperature, it throttles back and uses clearly less than while warming up.
Look at kWh per session, not at the wattage on the box. A well insulated 400 W blanket holds its temperature with short bursts and is therefore far from always running at full power. A poorly insulated 600 W blanket has to keep topping up and ends up using more. Insulation determines energy use more than maximum power does.
For people who want warmth several times a week, this difference is the argument that most often tips the balance. Four blanket sessions a week together still stay below the energy use of switching the sauna on once. If you go to the sauna for a long visit once a month, this whole point falls away and what you enjoy matters most.
Care and cleaning
Care is almost never taken into account when choosing, yet it decides whether you still enjoy something two years from now. All three options share the same problem: sweat is involved, and moisture that does not dry out starts to smell.
With a sauna and a cabin you have space and air circulation on your side. With a blanket you do not. A blanket that you fold up straight after a session and put in the cupboard is the most common cause of a musty smell. Always leave it open until it is dry first.
What you need to do regularly
| Care | Infrared blanket | Infrared cabin | Finnish sauna |
|---|---|---|---|
| After every session | Wipe the inside and leave open to dry | Wipe the bench and leave the door open | Wipe the benches and let them dry well |
| Washable | Only the inner liner or cover | Towels and covers | Towels and seat mats |
| Weekly | Nothing extra | Clean the floor and glass | Scrub the floor and check the wood |
| Yearly | Check the cable and controller | Dust the panels | Check the stove and stones |
| If you let it slide | Musty smell in the fabric | Musty smell and stains on the wood | Damaged wood and mould |
With a blanket, a washable inner liner saves by far the most work. The blanket itself never goes in the washing machine.
In practical terms the blanket is the easiest to look after, as long as you keep up that one habit of leaving it open. A full explanation is in cleaning and caring for your infrared sauna blanket.
The ritual and the social side
This is where the blanket loses out, and that is not a detail. For many people a sauna is an outing. You go together or sit in it together, you talk, you pour water on the stones, you step out for a cold shower and you go back in. That whole rhythm of hot, cold and rest is the core of a sauna visit. A blanket has nothing to offer against that.
In a blanket you lie alone, still, in your own living room. There is no second round, no pouring water on the stones, no plunge pool and no conversation. For one person that is exactly the point and it feels like the only half hour of the day when nobody wants anything from you. For another it is boring and misses everything that made the sauna fun.
What you really do not get in a blanket
- Sitting in the sauna together. A blanket is made for one person and that does not change with a bigger model.
- Switching between hot and cold. That is part of the sauna ritual and means getting up, cooling down and going back in.
- Pouring water on the stones and the scent of wood and aromas.
- The feeling of hot air on your face and in your airways.
- Walking around, changing seats and resting in between in a separate room.
If you mainly love the sauna outing, the atmosphere, being together and the cold plunge afterwards, a blanket will disappoint you. Do not buy it as a replacement for a sauna visit, but as something alongside it: a way to get some warmth on weekdays without leaving the house. People who see it that way are rarely unhappy with it. Read more about where a blanket is less of a fit in when an infrared sauna blanket is less suitable.
What a blanket does offer is ease. No travel time, no opening hours, no other people and no swimwear. What happens in your body during that warmth is explained in what an infrared sauna blanket does to your body.
Which option makes sense for whom
There is no winner that applies to everyone. But there are situations in which the choice is fairly clear. Find the row below that comes closest to you.
What suits which situation
| Situation | What often suits best | Why |
|---|---|---|
| Small flat without a fixed spot | Infrared blanket | Fits in a cupboard and works on an ordinary plug socket |
| You want quick warmth after exercise | Infrared blanket | Ready within a quarter of an hour and tidied away in no time |
| Warmth several times a week | Infrared blanket | Lowest energy use per session and the smallest hurdle |
| You love hot air and pouring water on the stones | Finnish sauna | Only there do you reach that temperature and that ritual |
| You prefer to go together | Finnish sauna or cabin | A blanket only fits one person |
| You have space and want mild warmth while sitting | Infrared cabin | You can sit, shift position and read during the session |
| You first want to try whether you like warmth | Infrared blanket | The smallest step, without building work or a fixed spot |
| The ritual matters more than convenience | Finnish sauna | Getting changed, cooling down and resting are part of it |
| You find saunas stuffy | Infrared blanket or cabin | The air you breathe stays cool |
Torn between two rows? Choose based on how often you will realistically use it. That question predicts satisfaction better than any other.
In the end, many people do not choose between these three but combine them. A sauna visit as a weekend outing and a blanket at home for weekday evenings. That works well, because they meet different needs: the sauna gives you an event, the blanket gives you a habit.
If you go for a blanket, look mainly at heat distribution, insulation and inside dimensions. Those three decide whether you keep enjoying it. The buying guide for infrared sauna blankets goes through those points step by step, and the infrared sauna blanket collection shows the models side by side with their sizes and settings.
Questions about blanket, cabin and sauna
Can an infrared sauna blanket replace a real sauna?
For the warmth and the sweating it comes a long way. For the experience it does not. You miss the hot air, sitting together, pouring water on the stones and switching between hot and cold. See a blanket as an addition for weekdays, not as a replacement for a sauna visit.
Why is a sauna 90 °C and a blanket only 60?
Because something different is being measured. In a sauna, 90 °C is the temperature of the air around you, which warms your body only slowly. In a blanket, 60 °C is the temperature of the surface lying directly against you. Direct radiant heat needs fewer degrees for the same effect on your skin.
Which uses less electricity, a blanket or a sauna?
The blanket, by a wide margin. Expect 0.2 to 0.4 kWh per session against 4 to 8 kWh for a Finnish sauna. That is not down to smarter technology, but to the fact that a blanket only warms you while a sauna warms a whole room, walls included.
Do you sweat as much in an infrared blanket as in a sauna?
Usually a little less, and it starts later. In a sauna most people start sweating after 5 to 10 minutes, in a blanket after 10 to 20 minutes. Because a blanket session lasts longer, the total amount ends up close. Drink plenty of water before and after.
Can two people use an infrared sauna blanket together?
No. A blanket is made for one person and even the roomier models are not meant to be shared. If you want warmth together, an infrared cabin or a sauna is the way to go.
What is the difference between an infrared cabin and an infrared blanket?
The technology is similar, the form is not. A cabin is a fixed space where you sit and can shift position, with room for one to two people. A blanket you unfold, use lying down and put away afterwards. A cabin gives more freedom of movement, a blanket gives less hassle.