Traditional saunas heat the air to roughly 70 to 100°C (160 to 212°F) and let you pour water on hot stones for steam. Infrared saunas warm your body more directly at lower air temperatures, around 45 to 65°C (110 to 150°F), heat up faster and often run on a standard household circuit. Choose traditional for the classic hot, steamy experience; choose infrared for lower temperatures, simpler installation and smaller spaces.
The type of heat changes everything about a home sauna: how it feels, how fast it is ready, and what it takes to install.
The difference at a glance
| Traditional | Infrared | |
|---|---|---|
| Air temperature | About 70 to 100°C (160 to 212°F) | About 45 to 65°C (110 to 150°F) |
| Steam | Yes, water on stones | No |
| Heat-up time | 30 to 60 minutes | 15 to 20 minutes |
| Electrical | Usually dedicated 240V circuit | Standard outlet for many small units |
| Feel | Intense, enveloping heat | Gentler, deep warmth |
| Space | Indoor rooms, outdoor barrels | Compact cabins, apartments |
Choose traditional if…
- You want the classic Finnish experience with löyly (steam).
- You have space for an indoor room or an outdoor barrel sauna.
- You can install a dedicated circuit, or you prefer a wood-burning heater outside.
Choose infrared if…
- You want a shorter warm-up and lower temperatures.
- You have limited space or rent your home.
- You want lower running costs per session.
What to check before you buy
- Electrical requirements in the installation manual.
- Interior size: seated capacity versus lying down.
- Wood: hemlock, cedar, spruce and basswood are common.
- Certification: ETL or UL listing for electrical safety.
- Ventilation and floor protection for indoor installs.
Pair heat with cold: see our cold plunge chiller sizing guide. Browse saunas.
Common questions
Do infrared saunas need special wiring?
Many one- and two-person infrared cabins plug into a standard dedicated outlet, while larger units need a 240V circuit. Traditional sauna heaters usually need a dedicated 240V circuit installed by an electrician. Always follow the maker's installation manual.
How long does a sauna take to heat up?
Infrared cabins are often usable in 15 to 20 minutes. Traditional electric saunas typically need 30 to 60 minutes, depending on room size and heater power.
Which is cheaper to run?
Infrared heaters usually draw less power and heat up faster, so sessions tend to cost less. Actual costs depend on heater wattage, session length and your electricity rates.
Is a sauna safe for everyone?
Heat exposure is not suitable for everyone. Talk to your doctor first if you are pregnant, have heart or blood pressure conditions, or take medication that affects heat tolerance.