Peak indoor infrared saunas vs Sunlighten infrared saunas

Peak indoor infrared saunas: 8 on sale, priced $4,950 to $10,750. Sunlighten infrared saunas: 13 on sale, priced $5,499 to $10,299. Largest sauna: 44 × 61 × 75 in (Peak Saunas Matterhorn 3-Person Full Spectrum Infrared Sauna) against 70.6 × 85.6 × 79 in (Sunlighten mPulse Intelligent Sauna Empower). Most seats: 3 (Peak Saunas Matterhorn 3-Person Full Spectrum Infrared Sauna) against 5 (Sunlighten mPulse Intelligent Sauna Empower). Hottest claimed top temperature: 150 °F (Peak Saunas Crown 2-Person Full Spectrum Infrared Sauna) against 170 °F (Sunlighten Amplify RED II).

At a glance

Fact	Peak indoor infrared saunas	Sunlighten infrared saunas
Products on sale	8	13
Categories	Saunas (8)	Saunas (13)
Price range	$4,950 – $10,750cheapest: Crown 2-Person Full Spectrum Infrared Sauna	$5,499 – $10,299cheapest: Signature I
Largest sauna	44 × 61 × 75 inMatterhorn 3-Person Full Spectrum Infrared Sauna	70.6 × 85.6 × 79 inmPulse Intelligent Sauna Empower
Most seats	3Matterhorn 3-Person Full Spectrum Infrared Sauna	5mPulse Intelligent Sauna Empower
Hottest claimed top temperature	150 °FCrown 2-Person Full Spectrum Infrared Sauna	170 °FAmplify RED II
Thickest walls	none published	none published
Where sold	Peak Saunas	list price only

Peak indoor infrared saunas

Sunlighten infrared saunas

Products on sale

Part by part

Matched by each product's size tier within its own line, so a row pairs each brand's compact, medium, large or XL piece. Tiers are for lining lineups up; the dimensions say how big each one really is.

Saunas 8 vs 13

Tier	Peak indoor infrared saunas	Sunlighten infrared saunas
Compact	Mini 1-Person Full Spectrum Infrared Sauna 1 · 31.81 × 31.5 × 67.13 in · $5,450	—
Medium	Crown 2-Person Full Spectrum Infrared Sauna 2 · 44 × 48 × 79 in · $4,950 Rainier 1-Person Full Spectrum Infrared Sauna 1 · 40 × 42 × 75 in · $7,250 Shasta 1-Person Full Spectrum Infrared Sauna 1 · 40 × 42 × 75 in · $6,950	—
Large	Everest 2-Person Full Spectrum Infrared Sauna 2 · 44 × 53 × 75 in · $7,950 Fuji 2-Person Full Spectrum Infrared Sauna 2 · 53 × 44 × 75 in · $8,250	—
XL	Denali 3-Person Full Spectrum Infrared Sauna 3 · 44 × 61 × 75 in · $9,750 Matterhorn 3-Person Full Spectrum Infrared Sauna 3 · 44 × 61 × 75 in · $10,750	—
Untiered	—	Amplify II 2 · 45.9 × 50.9 × 77.7 in · $5,999 Amplify III 3 · 45.9 × 62.3 × 77.7 in · $6,999 Amplify IV 4 · 56.2 × 80.4 × 77.7 in · $8,999 Amplify RED II 2 · 45.9 × 50.9 × 77.7 in · $7,699 Amplify RED III 3 · 45.9 × 62.3 × 77.7 in · $8,599 Amplify RED IV 4 · 56.2 × 80.4 × 77.7 in · $10,299 mPulse Intelligent Sauna Aspire 1 · 41.6 × 43.6 × 79 in · — mPulse Intelligent Sauna Believe 2 · 47.6 × 51.7 × 79 in · — mPulse Intelligent Sauna Conquer 3 · 47.6 × 70.6 × 79 in · — mPulse Intelligent Sauna Discover 4 · 70.6 × 70.6 × 79 in · — mPulse Intelligent Sauna Empower 5 · 70.6 × 85.6 × 79 in · — Signature I 1 · 39.8 × 37.8 × 77.7 in · $5,499 Signature II 2 · 45.9 × 50.9 × 77.7 in · $6,199

Tier

Peak indoor infrared saunas

Sunlighten infrared saunas

Compact

Mini 1-Person Full Spectrum Infrared Sauna 1 · 31.81 × 31.5 × 67.13 in · $5,450

—

Medium

Crown 2-Person Full Spectrum Infrared Sauna 2 · 44 × 48 × 79 in · $4,950

Rainier 1-Person Full Spectrum Infrared Sauna 1 · 40 × 42 × 75 in · $7,250

Shasta 1-Person Full Spectrum Infrared Sauna 1 · 40 × 42 × 75 in · $6,950

—

Large

Everest 2-Person Full Spectrum Infrared Sauna 2 · 44 × 53 × 75 in · $7,950

Fuji 2-Person Full Spectrum Infrared Sauna 2 · 53 × 44 × 75 in · $8,250

—

Denali 3-Person Full Spectrum Infrared Sauna 3 · 44 × 61 × 75 in · $9,750

Matterhorn 3-Person Full Spectrum Infrared Sauna 3 · 44 × 61 × 75 in · $10,750

—

Untiered

—

Amplify II 2 · 45.9 × 50.9 × 77.7 in · $5,999

Amplify III 3 · 45.9 × 62.3 × 77.7 in · $6,999

Amplify IV 4 · 56.2 × 80.4 × 77.7 in · $8,999

Amplify RED II 2 · 45.9 × 50.9 × 77.7 in · $7,699

Amplify RED III 3 · 45.9 × 62.3 × 77.7 in · $8,599

Amplify RED IV 4 · 56.2 × 80.4 × 77.7 in · $10,299

mPulse Intelligent Sauna Aspire 1 · 41.6 × 43.6 × 79 in · —

mPulse Intelligent Sauna Believe 2 · 47.6 × 51.7 × 79 in · —

mPulse Intelligent Sauna Conquer 3 · 47.6 × 70.6 × 79 in · —

mPulse Intelligent Sauna Discover 4 · 70.6 × 70.6 × 79 in · —

mPulse Intelligent Sauna Empower 5 · 70.6 × 85.6 × 79 in · —

Signature I 1 · 39.8 × 37.8 × 77.7 in · $5,499

Signature II 2 · 45.9 × 50.9 × 77.7 in · $6,199

All saunas from both brands, side by side →

Put their largest saunas side by side

Questions

Which is cheaper, Peak indoor infrared saunas or Sunlighten infrared saunas?

On the prices we have (as of October 10, 2026), the cheapest of the Peak indoor infrared saunas is the Crown 2-Person Full Spectrum Infrared Sauna at $4,950, and the cheapest of the Sunlighten infrared saunas is the Signature I at $5,499. Prices are re-checked weekly.

Which has more models, Peak indoor infrared saunas or Sunlighten infrared saunas?

Peak indoor infrared saunas: 8 on sale. Sunlighten infrared saunas: 13 on sale.

Which seats more people, Peak indoor infrared saunas or Sunlighten infrared saunas?

By the brands' own figures: 3 for Peak indoor infrared saunas (Matterhorn 3-Person Full Spectrum Infrared Sauna) and 5 for Sunlighten infrared saunas (mPulse Intelligent Sauna Empower).

Which gets hotter, Peak indoor infrared saunas or Sunlighten infrared saunas?

By the brands' own figures: 150 °F for Peak indoor infrared saunas (Crown 2-Person Full Spectrum Infrared Sauna) and 170 °F for Sunlighten infrared saunas (Amplify RED II). What the brand says the room reaches. Not measured by us; infrared saunas typically claim 140-150 °F, traditional 185-195 °F.

Answered from the catalogue data, as of October 10, 2026. How we compare.