The one-table answer
| Traditional (electric/wood) | Infrared | |
|---|---|---|
| Air temp | 160–212°F | 110–140°F |
| Warm-up | 30–45 min | 10–15 min |
| Electrical | 240V dedicated circuit | 120V outlet (small units) |
| Steam (löyly) | Yes — water on rocks | No |
| Typical cost | $4,500–12,000+ installed | $2,000–6,000, minimal install |
| Research base | Deep (Finnish cohort data) | Smaller, growing |
What actually matters in that table
Heat dose. The cardiovascular findings people cite — the Finnish studies associating frequent sauna use with lower cardiovascular risk — come from traditional saunas at traditional temperatures. Infrared runs 60–80°F cooler; you still sweat (the radiant heat warms you directly rather than heating the air), but if replicating the studied dose matters to you, traditional is the closer match.
The electrical line item. This decides more purchases than any health claim. A traditional heater needs a dedicated 240V run — often $500–1,500 of electrician work nobody budgets for. A small infrared cabin plugs into the wall of a rented apartment. Run your numbers in the Sauna Size & Electrical Calculator before falling in love with either.
The experience. Traditional sauna is a ritual: heat that grabs you, steam when you ladle water, the contrast of a cold plunge after. Infrared is gentler — closer to a long warm soak — which some people find is exactly why they use it more often. The best sauna is the one you'll actually sit in four times a week.
Our picks by situation
- Renting, or no 240V access: infrared, no contest. It's the only option that moves with you.
- Backyard, chasing the full contrast ritual: traditional — ideally paired with a plunge; see the combo setups compared.
- Primary goal is quiet recovery time and consistency: either works; buy on space and budget, not marketing.
- Chasing the studied cardiovascular protocol: traditional, 4+ sessions a week, ~19+ minutes each — that's the pattern in the cohort data.
Ready to look at actual hardware on both sides of this divide? Sun Home is one of the few brands selling far-infrared, full-spectrum, and genuine löyly traditional cabins under one roof — we break down all six of their lines, with the electrical fine print, in our Sun Home lineup review.
Educational content, not medical advice — the cardiovascular findings are associations from cohort studies, not guarantees, and anyone with heart or blood-pressure conditions should clear regular heat exposure with a doctor first.