Sunlighten Signature II vs Clearlight Premier IS-2
Clearlight Premier IS-2 leads on our weighted scoring by 0.7 points over Sunlighten Signature II. Clearlight Premier IS-2 costs $1 less — about 0% — so the question is whether what Sunlighten Signature II adds is worth that to you. They separate most on price (Clearlight Premier IS-2), overall score (Clearlight Premier IS-2) and type — those are the rows worth reading closely. In short: Clearlight Premier IS-2 for best-value indoor infrared from a trusted brand; Sunlighten Signature II for two-person far-infrared sessions without 240V wiring.
Heater power:Clearlight Premier IS-2
| 2 products |  Sunlighten Sunlighten Signature II |  Clearlight Clearlight Premier IS-2 |
|---|---|---|
| Price | $5,800 | $5,799 |
| Overall score | 8.0 | 8.7 |
| Type | Far-infrared (SoloCarbon) | Far-infrared |
| Heater power (kW) | 2,006W total draw (9 FIR heaters) | ~2.2 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 |
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Sunlighten
Sunlighten Signature II
Best for Two-person far-infrared sessions without 240V wiring
$5,800
Clearlight
Clearlight Premier IS-2
Best for Best-value indoor infrared from a trusted brand
$5,799$6,299
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