Sunlighten Signature vs mPulse (2026): Do You Actually Need 3-in-1 Infrared?

Sunlighten built its category lead on the mPulse: near, mid, and far infrared in one cabin, with a touchscreen and app on top. But the brand also sells the Signature line for $2,000 to $4,000 less, and for most buyers the Signature is the smarter purchase. Here is the honest decision.

What you give up, and what you keep

The mPulse uses Solocarbon 3-in-1 heaters (all three infrared wavelengths simultaneously) plus a smart layer: preset wellness programs, per-session wavelength ratios, Bluetooth audio, and mobile app control. The Signature strips out the near and mid heaters and the smart programming. It keeps the same Solocarbon far-infrared technology, the same eucalyptus or basswood build, the same under-3 mG EMF certification, and the same lifetime heater warranty.

Far infrared is what drives the large majority of the infrared bathing experience, and it is the wavelength most of the published research has actually studied. So the question is narrow: do you specifically want near and mid infrared in the same cabin, and will you actually use the smart programming?

Sunlighten Signature

DEEP REVIEW

Sunlighten·Sauna

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

$3,895–$6,495

SCORE

8.6 / 10

Far-infrared-only, 1 to 4-person, $3,895 to $6,495. Heats to a 130-150°F operating range in 10-15 minutes, runs 110V plug-and-play in the 1-person (2-person and up need a 220V circuit), lifetime heater warranty, 7-year cabin. This is the cabin roughly 80% of Sunlighten buyers should default to.

Sunlighten mPulse

DEEP REVIEW

Sunlighten·Sauna

mPulse Smart Sauna

The infrared sauna with the deepest research base in the category - Mayo Clinic studies, Solocarbon 3-in-1 technology, and a smart-control layer most competitors don't have.

PRICE

$5,995–$10,995

SCORE

9.2 / 10

Solocarbon 3-in-1 (near + mid + far), 1 to 3-person, $5,995 to $10,995. Adds the smart interface, preset programs, and app. The honest note from years of owner feedback: most people settle into 2-3 default programs within the first month and stop customizing. The smart layer earns its keep mainly in shared households (each user runs their own program) or for buyers who genuinely want to push specific wavelength ratios.

Spec comparison

Buy the Signature if

• You want a credible heritage-brand far-infrared sauna and the lifetime heater warranty
• You will settle into a couple of session types and do not need programmable wavelengths
• You would rather put the $2,000 saved toward a cold plunge for contrast therapy

Buy the mPulse if

• You specifically want near and mid infrared in the same cabin (rather than stacking a separate red-light panel)
• It is a shared household and per-user programs are genuinely useful
• The research-backed 3-in-1 system is the reason you are buying Sunlighten in the first place

The cross-shop you should also run

At the mPulse price point, Clearlight Sanctuary 2 is the obvious alternative (lower EMF, lifetime cabin warranty). See Sunlighten vs Clearlight for that comparison, and the Best Infrared Saunas 2026 guide for the full field.

• Ryan, Founder