Home sauna comparison · updated October 2026

Relaxe vs. Sunlighten: Which Home Infrared Sauna Is the Better Buy?

You can see the price of the Relaxe Caldera Two Person today, $5,499, and try it at home for a full year. Sunlighten asks you to request a quote first. Here is how the two compare.

See the Caldera and today’s price

365-day home trial · free shipping · 2 to 5 day delivery

$5,499Two Person price, shown on the product page

365 daysto try it at home

2 to 5 daysU.S. delivery, with free shipping

4.9 / 5from 87 owner reviews

A home sauna is a big purchase, and the first thing most people want to know is the price. For the Relaxe Caldera it is on the product page. For Sunlighten, you request a quote.

So we set the Relaxe Caldera Two Person next to the Sunlighten mPulse Believe, Sunlighten’s two-person cabin, on price, home trial, delivery, setup, red light and size.

The two saunas side by side

	Relaxe Caldera Two Person	Sunlighten mPulse Believe
Price	$5,499, from $7,899 total value	Request a quote from Sunlighten
Home trial	365 days, full refund of the sauna price, no restocking fees	Returns arranged through your sales rep, with possible storage and return shipping fees
Delivery	Free shipping, 2 to 5 day U.S. delivery	12 to 15 business days from the ship date, on a pallet
Setup	Flat-packed in 3 to 4 boxes, two people assemble with basic tools	Left on the pallet in your garage if it fits, and not carried up steps
Red light	Separate full-body panel, 180 LEDs, with glasses ($899 value)	4 red and near-infrared heaters in the cabin
Size	47 x 43 x 75 in	51.7 x 47.6 x 79 in
Weight	340 lb	494 lb (basswood)
Power	Dedicated 120 V, 20 A circuit	Dedicated 120 V, 20 A circuit

Relaxe Caldera infrared sauna lit from inside

Relaxe Caldera Two Person

Price: $5,499, from $7,899 total value
Home trial: 365 days, full refund of the sauna price, no restocking fees
Delivery: Free shipping, 2 to 5 day U.S. delivery
Setup: Flat-packed in 3 to 4 boxes, two people assemble with basic tools
Red light: Separate full-body panel, 180 LEDs, with glasses ($899 value)
Size: 47 x 43 x 75 in
Weight: 340 lb
Power: Dedicated 120 V, 20 A circuit

Sunlighten mPulse Believe

Price: Request a quote from Sunlighten
Home trial: Returns arranged through your sales rep, with possible storage and return shipping fees
Delivery: 12 to 15 business days from the ship date, on a pallet
Setup: Left on the pallet in your garage if it fits, and not carried up steps
Red light: 4 red and near-infrared heaters in the cabin
Size: 51.7 x 47.6 x 79 in
Weight: 494 lb (basswood)
Power: Dedicated 120 V, 20 A circuit

Sunlighten terms are as published on its website when we read them. Prices and terms change, so check them before you buy.

Why Relaxe comes out ahead

A price you can see.

The Relaxe Caldera Two Person is $5,499 on its product page right now. Sunlighten does not publish a price for the Believe. Its page says “Get pricing” and “Talk to a Sauna Consultant”, so you have to ask for a quote before you can compare. With Relaxe, you can tell whether it fits your budget in the time it takes to read this page. The price is part of the current offer, so check the product page for today’s terms.

A full year to decide.

Relaxe gives you 365 days at home. If the sauna is not right for you, you can return it for a full refund of the sauna price, with no restocking fees. You pay the return shipping, so read the terms on the product page. Sunlighten’s returns page describes returns, exchanges and cancellations arranged through your sales rep, with possible storage and return shipping fees, and says Sunlighten “reserves the right to refuse a return, exchange, or cancellation”.

In your home in days.

Relaxe lists free shipping and 2 to 5 day U.S. delivery. It comes flat-packed in three to four labelled boxes, with a screw kit and an installation guide, and Relaxe says two people can put it together with basic tools. Sunlighten’s shipping page lists 12 to 15 business days from the ship date, delivery by a final-mile carrier on a pallet, to your garage if it fits, and says it cannot be carried up steps.

See the Caldera and today’s price →

365-day home trial · free shipping · 2 to 5 day delivery

A smaller footprint.

The Two Person measures 47 by 43 by 75 inches and weighs 340 pounds. The Believe is listed at 51.7 by 47.6 by 79 inches and 494 pounds in basswood, so it takes up more room.

The red light is already in the box.

Every Caldera comes with a full-body red light therapy panel in the same order: 180 LEDs, red light at 660 nm and near-infrared at 850 nm, plus protective glasses. Relaxe lists the panel as an $899 value.

See the Caldera and today’s price →

365-day home trial · free shipping · 2 to 5 day delivery

What you get with the Relaxe Caldera

The Caldera is an infrared sauna with a full-body red light panel included. The temperature runs from 64 to 149 °F and the timer from 0 to 90 minutes, and some owners switch on the red light panel while the sauna heats. The Two Person measures 47 by 43 by 75 inches.

A Relaxe infrared sauna lit from inside, with wooden slat walls and a glowing heater beneath the bench — The Caldera sauna, from the Relaxe product page.

Relaxe lists a three-year warranty with technician service. The product page covers heaters, electronics and wood panels, with free replacement parts and U.S.-based technician support.

Check the power first

The Two Person needs a dedicated 120 V, 20 A circuit. Sunlighten lists the same requirement for the Believe. Confirm it for your home on the product page and ask an electrician if you are unsure.

See the Caldera and today’s price →

365-day home trial · free shipping · 2 to 5 day delivery

The Sunlighten mPulse Believe

Sunlighten mPulse Believe

No price published. Sunlighten asks you to request a quote.

A two-person cabin with 15 heaters: 6 far-infrared, 5 mid-infrared and 4 red and near-infrared. Sunlighten’s PulseIQ system delivers each wavelength separately, and the sauna comes with preset programs and a companion app. It is listed at 51.7 by 47.6 by 79 inches, needs a dedicated 120 V, 20 A circuit, and comes in basswood or eucalyptus. Sunlighten’s warranty page lists 5 to 7 years on cabinetry and heaters and 1 year on glass doors and audio.

Where Relaxe differs: a price you can see, 365 days at home, delivery in 2 to 5 days, a smaller and lighter cabin, and a full-body red light panel included.

What Relaxe owners say

On the Relaxe product page the Caldera is rated 4.9 out of 5 from 87 reviews: 79 five-star, 8 four-star, none lower. All 87 reviewers recommend it. Of those 87, 27 say they use it every day and 59 several times a week.

“The sauna is my evening escape”

Leslie B., owner review, Two Person

“I had been going to our gym for saunas and decided I’d like to have one at home for convenience…”

Eileen R., owner review, Two Person

“Our friends bought a sauna at a big box discount store recently, but I feel like this investment was worth the extra $.”

Amy H., owner review, Two Person

“I’ve used many dry saunas before, but this one is far better.”

Dori L., owner review, Two Person

“A glass paneled shattered but the company replaced it quickly and all went well.”

Sandra W., owner review, Two Person

“I needed a replacement part and customer service was outstanding. Very responsive with daily updates.”

Gary K., owner review, Two Person

See the Caldera and today’s price →

365-day home trial · free shipping · 2 to 5 day delivery

What it costs

From $3,999, with three sizes

The Two Person is $5,499, which the product page shows as 30% off a $7,899 total value. The One Person size starts at $3,999, which shows 24% off a $5,299 total value, and the Three Person is $7,999. The Fall Season Offer banner says savings of up to 35%.

Relaxe describes its “total value” as a comparison figure set from the selling prices of similar products, not a price the sauna was sold at before. Fall Season Offer pricing is a limited-time offer and may end without notice.

See the Caldera and today’s price →

365-day home trial · free shipping · 2 to 5 day delivery

Prices and offer details are subject to change.

Questions before you buy

Why is there no Sunlighten price on this page?

Sunlighten does not publish a price for the mPulse Believe. Its product page directs you to request pricing from a sauna consultant, so we have not put a figure on this page.

How long do I get to try the Relaxe sauna?

365 days at home. You can return the sauna for a full refund of the sauna price with no restocking fees, and you cover the return shipping.

How hard is it to put together?

It comes flat-packed in three to four labelled boxes with a screw kit and an installation guide, and Relaxe says two people can assemble it with basic tools. If you get stuck, owners say support answers fast and sends assembly videos.

Do I need an electrician?

The Relaxe Two Person lists a dedicated 120 V, 20 A circuit, and Sunlighten lists the same for the Believe. Owners describe different setups at home, so check the requirement on the product page and ask an electrician if you are unsure.

What if a part arrives damaged?

It can happen with a heavy product shipped in several boxes. Several owners who reported a damaged part describe a quick replacement. Relaxe also lists a three-year warranty with technician service and free replacement parts. The product page does not name the red light panel in the coverage list, so read the warranty terms.

Does this page make health claims?

No. This page compares prices, features and terms and quotes what owners say about owning the sauna. It does not claim that a sauna or a red light panel treats or prevents any condition. If you have a medical condition, talk to your doctor before you start using a sauna.

See the Caldera and today’s price →

365-day home trial · free shipping · 2 to 5 day delivery