Sunlighten makes infrared saunas for indoor use; its site says its saunas aren't designed to be placed outdoors. The range runs from the far-infrared Signature, through the full-spectrum Amplify and the Amplify RED, which adds red and near-infrared light panels, to the mPulse, which delivers red, near, mid and far infrared as separate wavelengths with preset programs and an in-sauna tablet.
It also sells the Solo System, a lie-down dome over a heated pad that folds away, for homes without room for a cabin. The cabins use Sunlighten's SoloCarbon heaters.
Visit Sunlighten (opens in a new tab) Not sure which model? Take the sauna quiz
Sunlighten at a glance
- Models listed here
- 14
- Seats
- 1 to 5
- Power
- 120V plug-in, 240V plug-in
- Warranty
- Sunlighten lists 7 years on cabinetry and heaters, 3 years on controls and 1 year on glass doors and audio, for residential use in the US and Canada.
Indoor infrared saunas
| Model | Type | Seats | Exterior (W × D × H) | Power | Heat |
|---|---|---|---|---|---|
| Signature I (opens in a new tab) | Infrared Cabin, indoor | 1 | 37.8 × 39.8 × 77.7 in | 120V 20A dedicated outlet NEMA 5-20, 1,350W | 8 far-infrared SoloCarbon heaters |
| mPulse Aspire (opens in a new tab) | Full-spectrum infrared Cabin, indoor | 1 | 43.6 × 41.6 × 79 in | 120V 20A dedicated outlet NEMA 5-20, 2,160W | Far, mid and red/near-infrared heaters (PulseIQ) |
| Signature II (opens in a new tab) | Infrared Cabin, indoor | 2 | 50.9 × 45.9 × 77.7 in | 120V 20A dedicated outlet NEMA 5-20, 2,006W | 9 far-infrared SoloCarbon heaters |
| Amplify II (opens in a new tab) | Full-spectrum infrared Cabin, indoor | 2 | 50.9 × 45.9 × 77.7 in | 120V 20A dedicated outlet NEMA 5-20, 2,270W | 5 far-infrared + 3 full-spectrum heaters Up to 170°F |
| Amplify RED II (opens in a new tab) | Full-spectrum infrared Cabin, indoor | 2 | 50.9 × 45.9 × 77.7 in | 240V 20A dedicated outlet NEMA 6-20, 2,620W | 4 far-infrared + 3 full-spectrum heaters, 4 red/near-infrared panels Up to 170°F |
| mPulse Believe (opens in a new tab) | Full-spectrum infrared Cabin, indoor | 2 | 51.7 × 47.6 × 79 in | 120V 20A dedicated outlet NEMA 5-20, 2,400W | Far, mid and red/near-infrared heaters (PulseIQ) |
| Amplify III (opens in a new tab) | Full-spectrum infrared Cabin, indoor | 3 | 62.3 × 45.9 × 77.7 in | 240V 20A dedicated outlet NEMA 6-20, 3,280W | 7 far-infrared + 3 full-spectrum heaters Up to 170°F |
| Amplify RED III (opens in a new tab) | Full-spectrum infrared Cabin, indoor | 3 | 62.3 × 45.9 × 77.7 in | 240V 20A dedicated outlet NEMA 6-20, 3,465W | 7 far-infrared + 3 full-spectrum heaters, 5 red/near-infrared panels Up to 170°F |
| mPulse Conquer (opens in a new tab) | Full-spectrum infrared Cabin, indoor | 3 | 70.6 × 47.6 × 79 in | 240V 20A dedicated outlet NEMA 6-20, 3,600W | Far, mid and red/near-infrared heaters (PulseIQ) |
| Amplify IV (opens in a new tab) | Full-spectrum infrared Cabin, indoor | 4 | 80.4 × 56.2 × 77.7 in | 240V 20A dedicated outlet NEMA 6-20, 3,900W | 4 far-infrared + 4 full-spectrum heaters Up to 170°F |
| Amplify RED IV (opens in a new tab) | Full-spectrum infrared Cabin, indoor | 4 | 80.4 × 56.2 × 77.7 in | 240V 20A dedicated outlet NEMA 6-20, 4,140W | 8 far-infrared + 4 full-spectrum heaters, 8 red/near-infrared panels Up to 170°F |
| mPulse Discover (opens in a new tab) | Full-spectrum infrared Cabin, indoor | 4 | 70.6 × 70.6 × 79 in | 240V 20A dedicated outlet NEMA 6-20, 4,500W | Far, mid and red/near-infrared heaters (PulseIQ) |
| mPulse Empower (opens in a new tab) | Full-spectrum infrared Cabin, indoor | 5 | 85.6 × 70.6 × 79 in | 240V 30A dedicated outlet NEMA 6-30, 5,580W | Far, mid and red/near-infrared heaters (PulseIQ) |
Specs as each brand publishes them, checked October 2026. "Not stated" and "See brand" mean the product page does not give that figure. Models change: confirm size, wiring and price on the brand's page before ordering.
Blankets and lie-down domes
| Model | Type | Seats | Exterior (W × D × H) | Power | Heat |
|---|---|---|---|---|---|
| Solo System (opens in a new tab) | Infrared Lie-down dome, indoor | 1 | 69 × 28 × 18 in | 120V household outlet NEMA 5-15, 1,260W domes + 300W pad | SoloCarbon far infrared in the domes and pad Up to 150°F |
Specs as each brand publishes them, checked October 2026. "Not stated" and "See brand" mean the product page does not give that figure. Models change: confirm size, wiring and price on the brand's page before ordering.
Before you order from Sunlighten
- The plug changes with size. Signature I and II, Amplify II and mPulse Aspire and Believe use a dedicated 120V 20A circuit (NEMA 5-20). The larger cabins and every Amplify RED need a dedicated 240V circuit (NEMA 6-20, or 6-30 for the mPulse Empower).
- Listed heights include the 2 in feet; leave room above for assembly and airflow.
- Sunlighten says its saunas aren't designed for outdoors. For the yard, look at outdoor-rated cabins instead.
- Sunlighten states the Amplify line is third-party verified at under 1 milligauss of EMF. If EMF matters to you, ask for the test method and the distance measured.
We have not tested Sunlighten products and do not rate them. Specs on this page come from Sunlighten's own product pages and spec sheets; confirm current models, prices and delivery terms on Sunlighten's site (opens in a new tab).
Frequently asked questions
Can a Sunlighten sauna go outdoors?
Sunlighten's site says its saunas aren't designed to be placed outdoors. For a backyard, look at outdoor-rated infrared cabins such as Clearlight's Sanctuary Outdoor or Sun Home's Luminar, or at a traditional outdoor sauna.
What is the difference between Sunlighten Signature, Amplify and mPulse?
Signature is far infrared only, with push-button controls. Amplify adds full-spectrum heaters, and Sunlighten says it heats faster and hotter, up to 170°F; Amplify RED adds red and near-infrared light panels. mPulse delivers red, near, mid and far infrared as separate wavelengths, with preset programs, a tablet and app control.
Which Sunlighten saunas run on 120V?
Signature I and II, Amplify II, and mPulse Aspire and Believe, each on a dedicated 120V 20A circuit. The 3-person and larger cabins and all Amplify RED models need 240V.
