Sunlighten Solo System review: a lie-down infrared dome, compared with cheaper domes and blankets

Sunlighten sells it as a kit: two domes that cover you from the shoulders down, and the SoloPad underneath. The domes hold 5 SoloCarbon far-infrared heaters, the pad 4 more. Per the spec sheet, a dome measures 69 × 28 × 18 inches and weighs 46 lb; the pad is 74 × 23.6 × 4 inches and 13 lb. That's light enough to store in a closet, which is the reason most people look at a dome over a cabin.

The top setting, level 9 in Sunlighten's usage guide, is 150°F. That's the lowest top temperature in the comparison below: the Clearlight and Bon Charge domes and the HigherDOSE blanket list 153°F or more. The Solo heats you from above and below rather than through a hot air space, so the number tells you less than it would for a cabin, but it's the only one Sunlighten gives.

Both parts run on 120 V household current, each with its own plug: 1,260 W and 10.5 A for the domes, 300 W and 2.5 A for the pad. Together that's 1,560 W and 13 A. A standard household circuit is 15 A, so if both plugs go on one circuit with anything else running, you may trip the breaker. If you're not sure what else is on that circuit, ask a licensed electrician.

There's nothing to assemble beyond setting the domes on the pad and plugging in.

For home use, the warranty is 7 years; Sunlighten's warranty page adds 3 years on the controller and 1 year on the foam. The longer cover on the parts that heat is the main thing that separates the Solo from a $699 blanket.

Returns are strict (policy checked October 16, 2026). Sunlighten lists the Solo System with its cabins: 30 days from delivery, only in the original unopened packaging, and "any opened saunas are unable to be returned." Fees can include a 3% administrative fee, a $299 restocking fee and return shipping. A dome or a SoloPad bought on its own falls under the accessories policy instead, where opening it doesn't rule out a return but the restocking fees are $299 a dome and $99 a pad.

On Oct 27, 2026, Sunlighten's store listed the Solo System at $2,099, on sale from $2,999, with free shipping. The same page sells the parts: the dome alone, with its curtain and pillow, at $1,999, and the SoloPad alone at $849. Bought separately they come to $2,848, so if you want both, the kit is the cheaper way. Sunlighten's main site still shows a "Get pricing" button on its Solo page; the price is in the store.

I don't repeat figures from other sites as if they were Sunlighten's. Prices for the cabins are on Sunlighten sauna prices. If you're offered a used one, remember that the warranty belongs to a purchase from Sunlighten or an authorized dealer.

The Clearlight Curve is the nearest thing: a far-infrared dome with a mat, the same 7-year warranty, a price of $1,599, $500 less than the Solo, and it takes returns of an as-new unit within 30 business days, with you paying the shipping. Its price is from Clearlight's "Black Friday Pricing" sale, for orders placed by November 30, 2026.

The blankets cost far less but carry one-year warranties, and you're wrapped in the heat source rather than lying under it. The Bon Charge dome costs more than the Solo, adds red and near-infrared LEDs and lists the highest top temperature here, 194°F, also with a one-year warranty. More on sauna blankets and portable saunas.

Sunlighten doesn't present the Solo as a medical device: it describes its products as "General Wellness products, not medical devices, as defined by the Food and Drug Administration", and I found no listing for the Solo in the FDA's databases. Questions about what infrared heat does for you belong with the evidence: what studies of infrared saunas show.

Sunlighten's guide suggests starting with 15–20 minute sessions and working up to 40. That's the brand's recommendation for this device, not a general rule; how long to stay in any sauna is covered in how long to stay in a sauna.