Sauna Blanket vs Heated Blanket: Differences & Safety

Short answer

A sauna blanket and an electric (heated) blanket do different jobs. A sauna blanket is a zip-up bag that heats you until you sweat during a timed session; HigherDOSE lists settings up to 175°F. An electric blanket is bedding that keeps you comfortably warm. Do not sweat inside an electric blanket, and never sleep in a sauna blanket.

Both plug into the wall and both get warm, but that is where the overlap ends. One is a short, sweaty heat session. The other is bedding. Here is how they compare and how to use each one safely.

Table of Contents

Sauna blanket vs heated blanket at a glance

Sauna blanket vs electric blanket (examples from manufacturer and fire-service guidance)
	Sauna blanket	Electric (heated) blanket
Main job	A timed heat session to make you sweat	Keeps your bed or body comfortably warm
How you use it	Zip in, usually wearing cotton clothes or an insert	Lie on it or under it on a bed or sofa
Heat level	High; HigherDOSE lists up to 175°F	Low to moderate, set by the controller
Session length	Limited; HigherDOSE suggests starting with 30–40 minutes	Long, but unplug before sleep unless it is rated for all-night use
Power (example)	HigherDOSE: 350–420 W	Check the rating label
Biggest safety rule	Never sleep in it; stop if you feel dizzy or sick	Never use it wet or with a hot water bottle

How a sauna blanket works

A sauna blanket looks a bit like a sleeping bag with heating elements inside. Most, like the HigherDOSE Infrared Sauna Blanket, use far-infrared heating. HigherDOSE tells users to preheat the blanket flat on a heat-safe surface for 10 to 15 minutes, wear long sleeves, pants and socks (or an insert) so skin does not touch the heated surface, and start with 30 to 40 minutes. Its spec list shows one heating zone, levels 1 to 9, a one-hour timer and 350 to 420 watts (as shown on 17.10.2026). Other brands differ, so follow your own manual.

Your head stays outside, which many people find easier than sitting in a hot room. You still sweat and heat up, so drink water and get out if you feel unwell. For more detail see what a sauna blanket is and how to use it and what to wear in a sauna blanket.

How an electric blanket works

An electric blanket is soft bedding with thin heating wires. It is meant to warm your bed or keep you cosy, not to make you sweat. UK fire services publish clear rules for using one safely. London Fire Brigade advises:

Unplug it before you get into bed, unless it has a thermostat control for safe all-night use.
Never use a hot water bottle at the same time.
Do not buy second-hand blankets.
Check it regularly for wear, scorch marks, wires poking through or a damaged cord, and replace it at least every 10 years.
Store it flat, rolled up or loosely folded so the wiring is not damaged.

Devon and Somerset Fire and Rescue Service adds that the blanket must be fully dry after washing before you switch it on, and that wet hands and feet should be kept away from it.

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Can you use a heated blanket as a sauna blanket?

No. Wrapping yourself tightly in an electric blanket to sweat goes against how it is designed and against fire-service advice on keeping it dry and flat. It will not turn into a sauna blanket, and sweat soaking into the wiring is a real risk. If you want a sweat session at home, use a product built for it, or compare other options in our guide to the best substitutes for a sauna.

Can you sleep in a sauna blanket?

No. A sauna blanket is for a short, timed session while you are awake. Staying in the heat too long can lead to heat exhaustion, with signs such as dizziness, headache, feeling sick, cramps and heavy sweating. Get out, cool down and drink water if you notice any of them. More safety tips are in are sauna blankets safe.

What about health benefits?

Sauna blankets are often sold with claims about detox, weight loss and glowing skin. We have not found good studies on sauna blankets themselves, so we do not repeat those claims. The weight you lose in a session is mostly sweat that you need to drink back. If a warm session helps you relax, that is a fair reason to use one. For what real users report, see sauna blanket results.

Who should be careful

Pregnant people: ACOG advises against saunas and hot tubs early in pregnancy, because a rise in core body temperature can be harmful. Ask your doctor before using a sauna blanket.
People who cannot feel heat well: Humberside Fire says electric blankets should not be used on the bed of an infant, a helpless person or someone with a condition that makes them insensitive to heat. The same caution makes sense for sauna blankets.
People with pacemakers: Humberside Fire also advises against heated bedding for all-night use.
Anyone with a heart condition, on medication, or unsure: check with a doctor first.

Which one should you buy?

If you are cold at night, buy an electric blanket with a timer or an all-night thermostat. If you want a short sweat session at home without building a sauna, a sauna blanket is the tool for that. Compare prices in how much sauna blankets cost and models in are all sauna blankets the same.

Frequently asked questions

What is the difference between a sauna blanket and a heated blanket?

A sauna blanket is a zip-up bag you lie in for a timed session to sweat. A heated (electric) blanket is bedding that warms your bed or keeps you cosy without making you sweat. They are built, rated and used differently.

Can I use an electric blanket as a sauna blanket?

No. Electric blankets are not made to be wrapped around a sweating body. Fire services advise keeping wet hands, feet and hot water bottles away from them and only switching them on when fully dry. Moisture and an electric blanket do not mix.

Can I sleep in a sauna blanket?

No. A sauna blanket is for a supervised session with a timer. HigherDOSE lists a one-hour timer setting and suggests starting with 30 to 40 minutes. Falling asleep in the heat raises the risk of overheating and heat exhaustion.

Can I leave an electric blanket on all night?

Only if it has a thermostat control made for safe all-night use. Otherwise London Fire Brigade advises unplugging it before you get into bed. Never use it together with a hot water bottle.

How hot does a sauna blanket get?

It depends on the model. HigherDOSE lists heating up to 175°F with levels 1 to 9. That is the setting of the heating element, not the air temperature of a sauna room, so check your own manual and start low.

Which uses more electricity?

HigherDOSE lists 350 to 420 watts for its sauna blanket, so a one-hour session on the highest setting uses at most about 0.42 kWh. Electric blankets vary, so check the rating label on yours.

Sauna Blankets vs Heated Blankets (Similarities and Differences)