Key facts
- Many infrared cabins run on a dedicated 120V 15A or 20A circuit; larger ones need 240V.
- Traditional heaters run on 240V: 6 kW at 25 A, 8 kW at 33.3 A (maker manuals).
- Infrared optimal ranges: Sunlighten 100.4 to 129°F; Health Mate 120 to 145°F.
- Almost Heaven's carbon infrared cabins are "indoor use only."
- Washington and Oregon both rank in the top 10 states for US "sauna" search interest (Google Trends, 12 months to Oct 2026).
Infrared models compared
| Model | Electrical | Heat-up | Temperature |
|---|---|---|---|
| Sunlighten mPulse Aspire | 120V, 1,800 W max, dedicated 15A circuit | about 1°F/min; 30 to 60 min across manuals | optimal 100.4 to 129°F |
| Sunlighten mPulse Believe | 120V, 2,400 W max, dedicated 20A NEMA 5-20 | same | same |
| Sunlighten Conquer, Discover, Empower | 240V, 3,840 W max, dedicated 20A NEMA 6-20 | same | same |
| Clearlight Sanctuary 1 / 2 | 120V 15A (1,750 W) / 120V 20A (2,250 W) | not stated by maker | not stated by maker |
| Health Mate Enrich 2 / Inspire 2 | 120V 15A, NEMA 5-15P, dedicated circuit recommended | 15 to 20 min (manual) | 90 to 170°F; optimal 120 to 145°F |
| Almost Heaven Infralux | 120V, "must run on a dedicated 20 amp circuit" | not stated | not stated |
Sources: Sunlighten owner manuals and assembly guide; Clearlight electrical requirements; Health Mate manual; Almost Heaven.
Infrared vs traditional at a glance
| Infrared cabin | Traditional sauna | |
|---|---|---|
| Typical circuit | Dedicated 120V 15 to 20A (larger models 240V) | Dedicated 240V, 30 to 50A by heater size |
| Outdoor use | Only models sold for outdoors | Barrel and cabin kits built for outdoors |
| Temperature | About 100 to 145°F optimal (maker figures) | Set by heater; size heater to room volume |
| GFCI | May apply to outdoor or damp receptacles (NEC 210.8) | Not on the hardwired heater per Harvia manuals (Article 424) |
How to decide
- Pick the location: indoor room, garage or backyard.
- If outdoors, shortlist traditional kits or infrared models the maker sells for outdoor use.
- Check your panel: a free 120V 20A circuit vs room for a 240V 30 to 50A circuit.
- Check permits: see our Washington and Oregon guides.
- Read the exact model's manual for wiring, clearances and use limits.
Related guides
- Sauna heater breaker and wire size
- Outdoor saunas in rainy climates
- Where do sauna intake and exhaust vents go?
- Outdoor sauna install cost breakdown
- Washington permits and Oregon permits
- The best home saunas of 2026, ranked by use case
Frequently asked questions
Is an infrared or traditional sauna better for the Pacific Northwest?
For a backyard sauna in a wet climate, a traditional sauna is the more common choice, because many infrared cabins are sold for indoor use. Almost Heaven's carbon infrared manual says "indoor use only." Infrared cabins often run on a 120V circuit, which is simpler to wire indoors. Choose by where it will live, how you want it to feel, and your electrical capacity.
What electrical circuit does an infrared sauna need?
Many run on 120V. Sunlighten lists its mPulse Aspire on a dedicated 120V 15A circuit and its Believe on a dedicated 120V 20A NEMA 5-20 outlet. Almost Heaven says its Infralux must run on a dedicated 20 amp circuit. Larger cabins such as Sunlighten Conquer and Clearlight Sanctuary 3 need 240V. Check the exact model's manual.
What electrical circuit does a traditional sauna need?
A 240V dedicated circuit sized to the heater. Heater manuals list a 6 kW heater at 25 amps on a 30 amp breaker and an 8 kW heater at 33.3 amps on a 40 amp breaker. Larger heaters need 45 to 50 amp breakers depending on the maker. See our breaker and wire size guide, and follow your heater's manual.
How hot does an infrared sauna get?
Lower than most people expect from a sauna. Sunlighten lists an optimal range of 100.4 to 129°F with a 150°F control preset. Health Mate lists a 90 to 170°F range with 120 to 145°F as optimal. Almost Heaven's carbon infrared manual shows heating up to about 135°F. Figures vary by model and room temperature.
How long does an infrared sauna take to heat up?
Maker figures range widely. Sunlighten manuals say about 1°F per minute, with 30 to 45 minutes in one manual and 45 to 60 in another. Health Mate's manual says 15 to 20 minutes, while its FAQ says 20 to 60 depending on placement. Almost Heaven's manual shows about 45 to 60 minutes to reach about 135°F.
Can an infrared sauna go outdoors in Seattle or Portland?
Only if the maker sells it for outdoor use. Almost Heaven labels its carbon infrared cabins "indoor use only." Clearlight sells an Outdoor 2 and Outdoor 5 model, which need 240V. A plug-in unit on an outdoor or damp-location receptacle may also need GFCI protection under NEC 210.8. Ask your electrician and inspector.
Does a sauna heater need GFCI?
A hardwired traditional sauna heater generally does not. Saunas are not covered by NEC 680.44; heaters fall under Article 424, and Harvia's manuals say not to use a GFI breaker. Sunlighten's manual says to use a GFCI or dual-function breaker if your codes require it. Plug-in units on outdoor receptacles may need GFCI under 210.8.
What wood should an outdoor sauna use in a rainy climate?
USDA Forest Products Lab data rates western redcedar heartwood as decay resistant, while hemlocks and spruces rate lower and untreated sapwood of nearly all species has low decay resistance. For outdoor use, our reasoned takeaway is clear cedar heartwood or thermally modified wood, kept off the ground. See our rainy-climate sauna guide.
Are infrared saunas healthier than traditional saunas?
We do not make health claims for either type. Both are popular for relaxation, and research on health effects is still developing. If you have a heart condition, are pregnant, or take medication that affects heat tolerance, ask your doctor before using any sauna. Choose based on the experience you prefer, placement and wiring.
Keep reading
Browse our saunas collection, see all guides, or ask us a question about your project.