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Head-to-head buyer guide

Sunlighten Signature Series vs Therasage Thera360 Plus

Specs, prices, editor verdict, and who should buy which, compared side by side.

By Ryan · Founder
Updated Sep 30, 2026

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Quick verdict

Sunlighten Signature Series (premium, $5,499 to $8,399) vs Therasage Thera360 Plus (mid, $1,428). Different tools for different jobs (see the per-product details below).

Compared on 2 shared specs · same category (sauna).

Sunlighten Signature Series cedar far-infrared sauna with Solocarbon heaters
Sunlighten

Signature Series

The Sunlighten that 80% of Sunlighten buyers should actually pick - Solocarbon far-infrared, no near/mid wavelengths to pay for, and a four-figure price gap below the mPulse flagship.

PRICE
$5,499 to $8,399
SCORE
8.6 / 10
View at Sunlighten →
Therasage Thera360 Plus portable full-spectrum infrared sauna, set up and open
Therasage

Thera360 Plus

The Thera360 Plus is the portable, full-spectrum infrared sauna for people who want regular sessions without a $5,000 cabin, a contractor, or a spare room. It folds into a bag, runs off a normal outlet, and your head stays out the top.

PRICE
$1,428
View at Therasage →
The verdict

We have not scored these two head to head, so this page does not name a winner. The Therasage Thera360 Plus starts at $1,428 and the Sunlighten Signature Series at $5,499. The per-buyer recommendations below say who each one suits.

Side-by-side specs

SpecSunlighten Signature SeriesTherasage Thera360 Plus
price$5,499 to $8,399$1,428
capacity1, 2, 3, 4-person configurations1 person (head out)
powerDedicated 120V/20A (1, 2 and 3 person) / dedicated 240V/20A (4-person)Standard 110V outlet, 900W (a 220V variant is sold at the same $1,428)

Sunlighten Signature Series also publishes: heater technology, wavelength range, EMF, operating temp f, heat up minutes, construction, heater warranty, cabin warranty, HSA/FSA

Therasage Thera360 Plus also publishes: type, spectrum, EMF, portability, extras

Who should buy which

Pick the Sunlighten Signature Series if

Buyers who want a credible heritage-brand far-infrared sauna with a 7-year heater and cabinetry warranty, and who don't need near or mid infrared in the same cabin.

Skip if

You want full-spectrum (near + mid + far) in one cabin (move to mPulse), you live in an apartment without 240V access for the 4-person cabin, or you can't justify $5K+ over a sauna blanket.

Pick the Therasage Thera360 Plus if

Renters, apartment-dwellers, travelers, and first-time sauna buyers who want consistent full-spectrum infrared sessions without the price, install, and permanence of a cabin.

Skip if

You want the enveloping, head-in, 180F-plus cabin experience, a multi-person sauna, or a permanent showpiece. Then a Clearlight or Sunlighten cabin is worth the spend.

Go deeper

FULL REVIEW
Read the Sunlighten Signature Series review →
FULL REVIEW
Read the Therasage Thera360 Plus review →

Frequently asked

Which is better, the Sunlighten Signature Series or the Therasage Thera360 Plus?

We have not scored these two head to head, so this page does not name a winner. The Therasage Thera360 Plus starts at $1,428 and the Sunlighten Signature Series at $5,499. The per-buyer recommendations below say who each one suits.

How much do they cost?

Sunlighten Signature Series: $5,499 to $8,399. Therasage Thera360 Plus: $1,428. Prices are verified against the manufacturer; check the live links for current pricing.

Who should buy which one?

Sunlighten Signature Series: Buyers who want a credible heritage-brand far-infrared sauna with a 7-year heater and cabinetry warranty, and who don't need near or mid infrared in the same cabin. Therasage Thera360 Plus: Renters, apartment-dwellers, travelers, and first-time sauna buyers who want consistent full-spectrum infrared sessions without the price, install, and permanence of a cabin.

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