The key difference is that the Evolve 20 features a large 300-watt heater mounted to the glass door, which adds more power and 360° body coverage.

• Outdoor placement is possible if completely protected from the weather. Colder climates will affect the warm-up time, for more detailed information see our FAQ page.
• The Saunas 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 will be required.
• For the assembly process there needs to be adequate space around the sauna before it’s pushed into place.
• Clearance required is 3-5cm for the sides and top of the sauna.

Sun Stream Saunas heat up to 65°C, but unlike traditional saunas, far infrared saunas work by heating your body directly—not just the air. This radiant heat penetrates deeply to trigger a powerful detoxifying sweat at lower, more comfortable temperatures. Our saunas deliver faster, more effective results thanks to high-powered carbon heaters, full 360° heat coverage, and no fabric barriers over the panels.

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

The Evolve 20 is a two-person infrared sauna built for shared home wellness. It offers more internal space and comfortable bench seating while maintaining efficient 360-degree heat distribution and energy use. It’s ideal for couples, partners, or anyone who enjoys saunas with a friend.

The sauna itself has a compact footprint for its capacity, but it’s helpful to allow some room all around it for ventilation and easy access during assembly. A clear area of about 15–20 cm on each side is usually sufficient.

The Evolve 20 runs on a standard 220–240 V household outlet, drawing approximately 8–10 A depending on model configuration. In most homes, this means you won’t need any special wiring, but we always recommend checking your breaker capacity if you’re unsure.

In most cases, no. The sauna is designed for straightforward plug-and-play use. If you’re installing it in a space without a nearby power point, you may choose to have an electrician provide a dedicated circuit, but it’s not mandatory for all homes.

For longevity and performance, this sauna is best suited to indoor spaces. If you need to place it outdoors, it must be under a fully sheltered area away from direct weather exposure. Humidity and rain can harm the wood and internal components over time. For extra protection we have covers made to order in Brisbane. For more info on outdoor placement see all the criteria here. 

It’s versatile. You can place it on tile, timber, concrete, or even carpet so long as the floor is level. Uneven surfaces can affect door alignment and heater performance, so take a few minutes to level the area before installation.

Because infrared warms the body directly instead of just the air, the Evolve 20 reaches effective sauna temperature use fairly quickly – usually within 15–20 minutes from cold. Ambient room temperature can affect warm-up time slightly.

Infrared saunas are known for being energy efficient. The Evolve 20 uses a modest amount of power compared to traditional saunas, and most customers find their running costs comparable to everyday household appliances.

The Evolve 20 is built with ultra-low EMF and ELF heater technology. This means electromagnetic levels stay well below many competing saunas while delivering strong, even heat. It’s designed for comfort and long sessions without unnecessary radiation.

Yes, most people find the assembly process manageable with two adults. The panels interlock simply, and the detailed instructions take you through each step. No specialised tools are needed beyond what’s typically found in a household toolbox.

Because infrared heat doesn’t rely on steam, ventilation needs are much lighter than traditional saunas. A small gap around the unit is generally sufficient.

Routine maintenance is minimal. Use towels to protect benches and interior surfaces, and wipe down our cleanable heaters periodically. There’s no water or steam system to maintain, which makes infrared saunas easier to care for over time.

The main difference is interior space and seating configuration. The Evolve 20 is ideal for couples or shared use, while larger models provide more room for families, social sauna use, or extra lounging space. In terms of heater quality and performance, they all use the same premium technology.

Sun Stream offers responsive support and replacement parts as needed. Whether you have questions during assembly or years later, our team can help you keep your sauna in great working order.