Evolve 20
Premium 2 Person Infrared Sauna

Designed for couples or those who simply enjoy more room, the Evolve 20 combines spacious comfort with industry-leading 360° infrared body coverage, ultra-low EMF technology and exceptional performance.

In stock

Why Choose the Evolve 20

The Evolve 20 combines generous two-person comfort with 25% more heating power than most comparable two-person infrared saunas. Combined with our industry-first 360° infrared body coverage, it delivers an exceptionally powerful, even and immersive sauna experience.

✓ Ideal for couples or extra personal space
✓ Premium 360° infrared body coverage
✓ Ultra-low EMF & near-zero ELF technology

✓ Lifetime Residential Warranty 

4,865

 Free Kerbside Delivery to Most EU Locations.

In stock

Evolve 20 2 person sauna door open showing 360° heater placement
A woman relaxing in a wooden sauna, sitting on a bench while wrapped in a towel, showcasing the serene and tranquil environment of a sauna experience.
A woman wrapped in a towel relaxes inside a wooden sauna, positioned on a wooden bench with patterned slatted walls above.
Evolve 20 2 person infrared sauna in modern gymnasium
Woman in a white towel sits on a wooden bench inside a sauna, surrounded by warm wood tones and soft lighting.

What Makes a Premium Infrared Sauna Different

360-degree rotation icon in orange, symbolizing comprehensive views and immersive experiences.

360° Superior Infrared Heat

Orange badge with a checkmark inside a circular outline on a light background, symbolizing quality or certification.

Lifetime Warranty (Residential)

Orange soundwave graphic on a white circular background, depicting smooth, alternating peaks and valleys.

Ultra-Low EMF & ELF <1mG EMF & near-zero ELF

Silhouette of an orange pine tree against a white circular background, symbolizing nature and environmental themes.

100% Premium Solid Timber Construction (FSC Certified Hemlock).

360° Infrared Heat​

Unlike many infrared saunas that concentrate heat behind and beside you, Sun Stream surrounds your body with infrared heat from the front, back and sides. Our large front heaters deliver powerful radiant heat directly to the front of your body for more complete 360° coverage.

Ultra Low EMF & ELF

Our nano-carbon heater technology produces ultra-low EMF levels of less than 1mG when measured 30mm from the heater panel, while ELF levels are near zero at approximately 0 V/m. The image shown is an actual EMF measurement of 0.65mG takenat 30mm from a Sun Stream heater panel.

Superior Heat Technology

Sun Stream’s high-output nano-carbon heaters are designed to deliver powerful radiant infrared heat directly to your body. With generous heater coverage and higher watt density, you experience more intense, even heat — helping you warm up and sweat faster with or without extremely high cabin temperatures.
Certification logos including CE mark, UKCA mark, and RoHS compliance symbol, indicating product safety and environmental standards.

Safety

Your sauna should be as carefully constructed as the environment you’re creating inside it. Sun Stream saunas are made from 100% solid FSC-certified Canadian Hemlock, with no MDF or engineered wood. Where adhesive is required, we use Titebond water-based food-safe glue. Our saunas are also CE, UKCA and RoHS compliant.

Everything Included with Your Evolve 20

Close-up of a hand with red nails tapping on a sleek smartphone screen, set against a softly blurred background.

Smart Plug/ App Compatible

Compatible with smart plugs and app-based controls, allowing you to pre-heat your sauna before you step inside.

Icon depicting a sun and sword in a circular design, representing themes of light, adventure, and fantasy.

Adjustable Infrared Intensity

This unique feature allows the user to adjust the Infrared Heat Intensity for different purposes and personal needs.

White abstract Bluetooth symbol on a gradient blue circular background.

Integrated Bluetooth Audio

Connect your mobile device in an instant to enjoy your favourite music on demand! Our Audio Module features RF shielding for your safety.

Close-up of a hand adjusting the settings on a Sun Stream infrared sauna control panel, displaying a temperature of 47°F and a timer set for 60 minutes, with a red backlight illuminating the interface.

Digital LCD Control Panel

Adjust the settings to your liking from inside the sauna as your session progresses.

Wooden spa setting featuring a slatted bench, a bath brush, and a towel draped over the side, creating a soothing atmosphere.

Premium Accessories Pack Included

2 x Supportive Backrests, Sun Stream Towels, Cup Holder, Aromatherapy Unit, Dry skin Lymphatic brush & Sauna Hat.

Woman cleaning a wooden sauna interior, using a cloth to wipe down the surface for maintenance and hygiene.

Removable Floor & Wall Heater Guards

Easy access means you can clean the sweat off our wipeable heaters to maintain the highest standards of hygiene.

Where Can I Place my Evolve 20?

Evolve 20 2 person sauna internal view
  • Only 1 – 2cm clearance required for the sides and 5cm for the top of the sauna.
  • The Evolve 20, 2 person sauna can be placed on carpet, tiles, timber or concrete flooring.
  • The surface the sauna is placed on ideally needs to be perfectly level, however if slightly out, levelling can be easily achieved with the supplied packers.
  • For the assembly process there needs to be adequate space around the sauna (approx 50cm back and sides).

Assemble Your Evolve 20 in 30 to 90 minutes.

Owner’s Manual | Download

Evolve 20 Assembly Manual | Download

Evolve 20 Assembly Video | Watch

Evolve 20 - 2 Person Specifications

Measurements

External Dimensions:
1180 mm (W) x 965 mm (D) x 1880 mm (H)

Internal Dimensions:
1120 mm (W) x 865 mm (D) x 1755 mm (H)

Electrical Specifications

The Evolve 20 plugs into any standard 220-240 Volt wall outlet
estimated 2080 Watts @ 240 Volt, 8.60 Amps

Please note, similar to appliances with motors such as washing machines, dryers and fridges, infrared saunas create ground leakage. This helps dissipate electric fields. In some homes (less than 5%) that have switchboards close to capacity with only one to two circuit breakers, introducing an infrared sauna can cause your circuit breaker to trip. In this instance, replacing the RCD with an additional circuit breaker may be required.

Quick and Easy Assembly

With our invisible fastening system, installation is quick and easy. Our detailed assembly manuals with professional photography make for a stress free assembly experience. Download Installation Manual

In stock

Technical drawing of the LT-EV20 model showcasing front and top views, including detailed dimensions: front height 1886 mm, width 1181 mm, and depth 961 mm, with additional information on design features.

Frequently Asked Questions

People use infrared saunas for many reasons, including relaxation, stress reduction, post-exercise recovery, improved circulation, a deep sweat and as part of an overall healthy lifestyle. Research into infrared sauna bathing continues to grow, with studies investigating a wide range of potential health and wellness benefits.

To explore the scientific research behind infrared sauna therapy, visit our dedicated Health Benefits of Infrared Saunas page, where we’ve summarised the latest evidence and referenced published studies

  • 360° infrared body coverage
  • Verified Ultra-low EMF & near-zero ELF
  • Solid Canadian Hemlock construction
  • Lifetime residential warranty
  • Engineering and build quality
  • Over 25 years of product development

The true cost of an infrared sauna isn’t what you pay on the day you buy it—it’s what it costs over the next 10 or 20 years.

Inferior materials, perfromance, lower-quality components and shorter warranties may reduce the initial purchase price, but they can often lead to higher ownership costs through repairs, replacement or simply the need to buy another sauna sooner than expected.

At Sun Stream, we design our saunas to provide decades of reliable performance. That’s why every sauna is built from premium materials, engineered for longevity and backed by a lifetime residential warranty.

You’ll be pleasantly surprised how little it costs to enjoy your sauna. Even with daily use, running costs are significantly lower than most people expect.

A typical sauna session including heating time won’t exceed one hour. The following running costs are based on €0.40/kWh tariff from your electricity supplier:

Model NamePower RunningCost (Per Session)
Evolve Mini1390W€0.56
Evolve 101710W€0.70
Evolve 202040W€0.83
Evolve 302255W€0.90

A pre-heat time of only 15 minutes is all that is required to bring the heaters up to full temperature prior to commencing your sauna session.

Although the maximum temperature setting of our Sun Stream Saunas is 65°c,  it’s important to note that the actual cabin temperature of the sauna is NOT the key factor. Unlike traditional heat & steam saunas which rely on temperature alone, a far Infrared Sauna heats the body directly, or in other words you absorb the radiant heat through the moisture in your skin which is then drawn in deeper through conduction to the muscles to induce a deep heavy sweat.
Far Infrared heat causes you to sweat and release toxins from the body even at relatively low cabin temperatures. Our saunas are designed to achieve this result faster than all other brands due the concentration of power into lower high watt density carbon heater panels, superior 360 degree radiant heat and no fabrics or materials covering the surface of the heater panels and thereby blocking the radiant heat.
Click here to learn why a Sun Stream Sauna is hotter than all other brands!

Yes. Most customers assemble the Evolve 20 themselves using our detailed instructions. Installation is quick, easy and requires only a screwdriver to fix the handle to the door along with a couple of additional minor tasks. There are no special electrical requirements, all electrics are plug n play.  Depending on the model purchased, installation can take anywhere from 30 – 90 minutes.

Since all of our saunas are made from untreated timber to ensure they are free of toxins, they are not suitable to be placed outside. Saunas placed outside are not covered by our Lifetime Warranty.

We chose 100% solid Canadian Hemlock because we believe it’s the best timber for a premium infrared sauna. It is durable, dimensionally stable, hypoallergenic, has virtually no natural odour, and creates a bright, modern appearance that complements any home.

Canadian Western Red Cedar is undoubtedly a beautiful timber and remains a popular choice for traditional saunas where high moisture resistant timber is essential. However, it is also recognised as a potential sensitiser for some people. According to the Wood Database, Western Red Cedar has been associated with allergic reactions in susceptible individuals, including skin, eye and respiratory irritation.

Because our focus is on health and wellness, we believe Canadian Hemlock is the better choice for the vast majority of customers.

To learn more about Canadian Hemlock, please click here.

For most people, the answer is yes. Sun Stream saunas are constructed from 100% solid Canadian Hemlock, a timber chosen for its hypoallergenic properties, minimal natural odour and suitability for health and wellness environments.

A very small percentage of people experience a condition commonly referred to as Multiple Chemical Sensitivity (MCS), where they may react to very low levels of certain natural or synthetic substances. While MCS is not universally recognised as a medical diagnosis, individuals who believe they have this condition should carefully consider any new product introduced into their home.

For customers seeking the lowest possible natural odour and a hypoallergenic timber, we believe 100% solid Canadian Hemlock is an excellent choice.

The main difference is how the heat is produced and how it warms your body.

Traditional saunas use a stove to heat rocks, which then warm the surrounding air. Water can be poured over the hot rocks to create steam, producing the high temperatures and humidity associated with a traditional sauna.

Infrared saunas use advanced infrared heaters to warm your body directly rather than primarily heating the air around you. This allows you to enjoy the benefits of infrared heat at lower, more comfortable air temperatures while still achieving a deep, satisfying sweat.

Because infrared saunas don’t require a stove, hot rocks or plumbing, they are also much easier to install and can be placed in many suitable rooms throughout the home.

Most people enjoy an infrared sauna session for between 20 and 30 minutes, although the ideal duration varies depending on your experience, personal preference and overall health. If you’re new to infrared saunas, it’s often best to begin with shorter sessions and gradually increase the time as your body becomes accustomed to the heat.

As with any wellness routine, listen to your body and leave the sauna if you feel uncomfortable. If you have a medical condition, are pregnant or have any health concerns, we recommend consulting your healthcare professional before using an infrared sauna.

Many people enjoy using their infrared sauna anywhere from a few times a month to several times a week—it really comes down to your lifestyle, schedule and personal preference. Some owners enjoy a relaxing sauna session every day, while others simply use it whenever they feel like unwinding after a busy day or strenuous exercise.

There is no “right” frequency. One of the greatest benefits of owning your own infrared sauna is the freedom to enjoy it whenever it suits you.

If you have a medical condition, are pregnant or have any concerns about sauna use, we recommend consulting your healthcare professional before using an infrared sauna.

For the most comfortable infrared sauna experience, many people choose to wear very light clothing, such as a swimsuit, while others prefer to use their sauna without clothing when privacy allows. The most important consideration is to wear as little as you feel comfortable with so your skin is exposed to the infrared heat.

Heavy clothing can reduce your comfort by trapping heat and preventing perspiration from evaporating naturally, making your sauna session feel hotter than necessary.

For hygiene and comfort, we recommend sitting on a clean towel and keeping a second towel nearby to wipe away perspiration during your session.

The Purpose of a Sauna

To safely heat your body, raise your core temperature and produce a deep, comfortable sweat.

Far infrared is exceptionally well suited to this because it is readily absorbed by the water in our skin, efficiently generating heat within the body.

What About Near Infrared?

Near Infrared is widely researched for photobiomodulation (light therapy), where LEDs or lasers emitting specific wavelengths—commonly around 660 nm and 850 nm—are positioned very close to the body.

Why Sun Stream Chose Far Infrared

Rather than attempting to combine two very different technologies into one product at great compromise to the effectiveness of both treatments, Sun Stream has chosen to optimise each therapy for its intended purpose.

What About Full Spectrum Saunas?

Current photobiomodulation research has generally used high-intensity LEDs or lasers positioned close to the treatment area. In many full spectrum sauna designs, users are much further from the far less powerful Near Infrared source, which may affect the amount of light reaching the body. For this reason, Sun Stream has chosen not to market our saunas as “full spectrum”, instead focusing on optimising Far Infrared without  compromising the sweating experience, which is the entire purpose of buying an infrared sauna.

In our opinion, yes. Carbon fibre panel heaters offer significant advantages over traditional ceramic heaters in terms of comfort, durability and infrared heat distribution. That’s why every Sun Stream sauna is equipped with premium nano-carbon heating panels.

Longer Lasting Performance
Carbon fibre panels operate at lower temperatures than ceramic heaters, placing less stress on the heating elements. This contributes to exceptional long-term reliability and is one of the reasons we confidently back our saunas with a lifetime residential warranty.

Powerful, Even Infrared Heat
Large nano-carbon heating panels distribute infrared heat evenly across a much larger surface area than ceramic tube heaters. This provides exceptional body coverage and a consistently powerful sauna experience without the concentrated hot spots associated with ceramic tube heaters.

Superior 360° Body Coverage
Large nano-carbon panels surround your body with infrared heat from multiple directions, providing far more even heat distribution than narrow ceramic tubes. This allows more of your body to be exposed to infrared energy, creating a deeper, more comfortable and consistent sauna experience.

Woman relaxing in a sauna.

Discover the Benefits of Infrared Saunas


Sun Stream Saunas emit far Infrared heat to reduce pain, relax muscles, boost immunity, detox and much more

Heart icon with an orange heartbeat line, symbolizing health and wellness monitoring.

Heart Health

Minimalistic design featuring two curved lines symbolizing leaves, with small orange sparkles above on a white circular background.

Muscle Recovery

Illustration of a waist with a leaf symbolizing natural weight loss or fat burning, emphasizing health and wellness.

Detoxification

Smiling cartoon face with sparkling accents, set in a circular white background, conveying happiness and positivity.

Skin Benefits

Icon of a crescent moon with sleeping z's, symbolizing sleep and relaxation.

Improved Sleep

A circular icon featuring a shield with a stylized molecule at its center, colored in dark brown and orange on a light background.

Immunity Boost

The Best range of Infrared saunas in Europe

Discover Europe’s most advanced range of infrared saunas, featuring industry-leading 360° body coverage, verified ultra-low EMF & near-zero ELF technology, and 100% premium solid Canadian Hemlock construction.

Interior view of a wooden sauna featuring a bench, grid shelves, and subtle lighting, with a minimalistic design and dark backdrop.

Evolve Mini

1 Person

Our Sun Stream ‘Evolve Mini’ is small on footprint but huge on performance. The world’s most powerful sauna of its size!

Wooden sauna interior with a light-colored wooden finish, featuring a bench, black panels, and overhead lighting.

Evolve 10

1 Person

The Evolve 10 provides a superior immersion in infrared heat with our industry leading 360° body coverage.

Wooden sauna interior with light wood paneling, a bench on the left, and a small stool on the right; illuminated by overhead lights.

Evolve 20

2 Person

The Evolve 20 combines generous two-person comfort with 25% more heating power than most comparable two-person infrared saunas..

Wooden sauna with seating and windows

Evolve 30

3 Person

This is true innovation for infrared saunas, surrounding you with our 360° ultra low ELM & ELF heaters, for a faster, heavier sweat.

Not sure which sauna is right for you?

We know choosing a sauna can be a big decision, and something that can take a lot of time to research, that’s why we’re offering to do all the hard work for you.

Simply let us know which Sun Stream sauna you’re interested in and the competitor’s product you’d like to compare it against, and we’ll do our best to send you an impartial evaluation of the two models.