Sunlighten Signature II vs Clearlight Sanctuary 2
Clearlight Sanctuary 2 scores highest overall, while Sunlighten Signature II is the most affordable. These products suit different buyers, so weigh the criteria that matter most for your setup rather than the headline score alone.
Heater power:Clearlight Sanctuary 2
| 2 products |  Sunlighten Sunlighten Signature II |  Clearlight Clearlight Sanctuary 2 |
|---|---|---|
| Price | $5,800 | $7,299 |
| Overall score | 8.0 | 8.7 |
| Type | Far-infrared (SoloCarbon) | Full-spectrum infrared |
| Heater power (kW) | 2,006W total draw (9 FIR heaters) | ~2.4 kW |
| Max temperature (°F) | — | 125–145 °F |
| Capacity (persons) | 2 persons | 2 persons |
| Voltage | 120V (NEMA 5-20R) | 120V / 20A (config) |
| Amperage (A) | 20A dedicated circuit required | 20 A |
| Wood | Eucalyptus (basswood weight also listed) | Cedar or basswood |
| Warm-up time (min) | — | 20–30 min |
Sunlighten
Sunlighten Signature II
Best for Two-person far-infrared sessions without 240V wiring
$5,800
Clearlight
Clearlight Sanctuary 2
Best for Indoor full-spectrum infrared with the best warranty
$7,299$7,799
We may earn a commission when you purchase through links on our site. This does not influence our scoring methodology or recommendations.
More saunas comparisons
Guides that help
Guide · 12 min readInfrared vs traditional saunas: which is right for you?The two sauna types deliver heat very differently. Here's how to choose based on the experience you want, installation, running cost and space.Guide · 13 min readHow to choose a sauna: the complete 2026 buying guideType, installation, size, materials and budget — the decisions that actually matter when buying a home sauna, in the order to make them.