Sunlighten Signature I 1-Person Far Infrared Sauna

Infrared

Where to buy

Sunlighten prices by quote.

Sunlighten publishes no price for this model, so this page shows none. The pricing link opens this model's page, where a price can be requested.

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Specifications verified October 9, 2026. How these numbers are checked.

Footprint: 37.8 x 39.8 x 77.7 in
Placement: Indoor
Plug-in or 240 V: Plugs into a 120 V outlet; no 240 V wiring needed.
Circuit: 120V / 20A (NEMA 5-20P), as the maker publishes it.Sunlighten publishes a dedicated 120V 20 amp circuit for this model. Its stated 1,350 W rating computes to 11.3 amps of draw and a 15 amp minimum breaker under the 125 percent rule; the maker specifies 20 amps, one size above that minimum.Check it on the calculator.

Running cost: About $0.25 per one-hour session: a 1.35 kW heater at the US average residential rate of 18.31 cents per kWh (EIA, July 2026).

Full specifications: capacity, heater power, warranty and 1 more, each with its source

Specifications read from the maker's product page on October 9, 2026: sunlighten.com. A row with its own source link was read from the page it links.

Source links to Sunlighten are affiliate links that support this site; see the affiliate disclosure.

How it measures against similar models: 1 high and 2 trade-offs

Warranty of 7 yr is higher than 80 percent of the 271 models that list one (median: 5 yr).

Heater power of 1.35 kW is lower than 97 percent of the 259 models that list one (median: 6 kW).
Ties for the lowest capacity of the 401 models that list one.

The 3 categories it is listed in

This model is listed in these categories:

Nearest to this model on capacity and type.