Full-Spectrum Infrared Saunas: What They Are, How They Work, and Whether They’re Worth It

Full-spectrum infrared saunas are often marketed as the “premium” version of infrared therapy, but the benefits go far beyond extra features or a higher price tag. This type of sauna gives you the best of the three main types of infrared spectrum, all in one – near, mid and far infrared. The result is a broader, more layered heat response within a single session.

This guide breaks down how full-spectrum infrared saunas work, how they differ from standard far infrared models, and whether the added investment makes sense for your health goals and long-term use.

But before we get started:

What are the types of infrared wavelength?

There are three main types of infrared wavelength. Before you buy a full-spectrum infrared sauna, you need to understand what each does:

Near Infrared

Near-infrared wavelengths lie closest to visible light on the electromagnetic spectrum. They penetrate just below the skin’s surface, which is why their benefits tend to focus on skin health and surface-level tissue repair. Near-infrared wavelengths are most effective for collagen stimulation, skin rejuvenation, wound healing, and reducing surface inflammation.

Because near infrared doesn’t penetrate as deeply as other wavelengths, it operates more gently. That shallow absorption is precisely what makes it effective for the skin layer. It does its best work right where the skin needs it.

Mid Infrared

Mid-infrared wavelengths penetrate a bit deeper to reach the soft tissues and joints. This range improves circulation and provides relief for people dealing with joint stiffness or soreness from physical activity.

Far Infrared

Far infrared wavelengths penetrate the deepest into the body’s core and promote a thorough, sustained sweat at lower ambient temperatures than a traditional sauna. This is the wavelength most commonly found in standalone infrared saunas, and it’s the one associated with detoxification support, deep relaxation, and cardiovascular response.

Overall:

The difference between full-spectrum and far-infrared-only models comes down to whether you want a single deep-penetrating wavelength or the combined effect of all three. A full-spectrum unit emits all three wavelengths in a single unit. Let’s go into what it offers in detail:

What Is a Full Spectrum Infrared Sauna?

Finnmark Designs FD-2 Full Spectrum Infrared Sauna

A full-spectrum infrared sauna delivers the complete infrared wavelength range — near, mid, and far infrared — in a single session. Each wavelength reaches your body at a different depth and covers more wellness applications than any single wavelength alone.

The main benefit of a full-spectrum infrared sauna is versatility. Oftentimes, our wellness goals change, and it’s not uncommon to use the sauna for different reasons throughout the week. For instance, you might want to relax in the sauna after a long day. Another time, your focus could be all-around wellness. A full spectrum provides access to all the infrared wavelengths, so you don’t have to be limited to a single technology.

Norse Steam carries full-spectrum infrared saunas from trusted names like Dynamic Saunas and Maxxus Saunas, both of which build models designed for home use with close attention to EMF levels and build quality.

Health Benefits of Full-Spectrum Infrared Saunas

Source

Here are some of the common benefits of a full-spectrum infrared sauna:

1. Improves Cardiovascular Health

One of the most well-documented benefits of infrared sauna use is its effect on the heart. The deep, radiant heat gradually raises your core body temperature, which in turn, increases circulation and dilates your blood vessels. The physiological response is similar to what your body experiences during moderate aerobic exercise.

For people dealing with elevated blood pressure or looking to support long-term cardiovascular health, regular infrared sauna sessions can help reduce strain on the circulatory system.

2. Fastens Muscle Recovery

Far infrared penetrates 4–5cm into tissue, which means the heat reaches the muscles directly rather than just warming the surface. This deep-tissue warmth and improved circulation accelerate the removal of metabolic waste products from fatigued muscle tissue.

3. Provides Pain and Joint Relief

Mid- and far-infrared wavelengths penetrate deep into soft tissue to reduce inflammation and relieve pain in muscles and joints. Research supports this, too. Clinical studies in patients with rheumatoid arthritis and ankylosing spondylitis show reductions in pain and improvements in joint stiffness following regular infrared sauna use. Over time, consistent sessions may support better joint comfort and make daily movement feel easier and less restricted.

4. Improves Your Sleeping Pattern

Heat exposure lowers cortisol levels and activates your parasympathetic nervous system — your body’s rest-and-repair mode. After a session, your core body temperature rises and then drops, which signals your brain to initiate sleep.

5. Improves Skin Health

Near infrared wavelengths also stimulate collagen and elastin production, improve skin texture, and support cellular repair at the surface.

How to Choose the Right Full-Spectrum Sauna for Your Home

Two full-spectrum saunas at the same price point can perform very differently depending on heater quality, cabin construction, and installation. Before you commit to a model, consider these factors:

1. Heater Panels

There are two main types of heater panels in an infrared sauna:

• Carbon Fibre Panels

Carbon fibre panels spread heat evenly across a wide surface area. Instead of directing intense heat from a single point, they deliver a consistent, gentle warmth across the body. This creates a more balanced and comfortable experience, especially for longer sessions or regular daily use.

• Ceramic heaters

Ceramic heaters produce a hotter, more concentrated heat. The output feels more intense and direct, which some users prefer for short, high-heat sessions. However, this intensity can become uncomfortable during longer use, especially for beginners or heat-sensitive users.

Most high-quality full-spectrum models use carbon fibre for near- and mid-infrared delivery and ceramic or quartz for far-infrared. Beyond the panel type, check the panel placement. A unit with front, back, side, and floor panels covers your body far more evenly than one with heaters only on the back wall.

2. EMF Rating

All infrared saunas produce some level of electromagnetic fields (EMF), but the quality of shielding and wiring design determines how much exposure you actually experience inside the cabin.

Lower-quality units often rely on vague claims like “low EMF” without providing measurable data. Better manufacturers publish specific readings in milligauss (mG), usually measured at body distance inside the sauna. This gives you a clearer idea of the electromagnetic environment you’ll be sitting in. For example, the Golden Designs Maxxus 3-person full-spectrum infrared sauna EMF level is under 3mG, with 6-8 inches from the heating panel:

As a general benchmark, readings below 3 mG at seated distance are considered reasonable for home use. Well-designed low-EMF saunas can often test even lower, depending on the heater type and build quality.

If a brand does not provide any measurable EMF data or does not specify how and where tests were conducted, that is a red flag. In that case, it is usually safer to choose a manufacturer that is transparent with its specifications.

3. Wood Species

You also need to check out the type of wood used to construct the sauna, as it affects:

• How the sauna would last
• The sauna’s appearance
• The aroma inside the sauna
• The level of maintenance required
• Your overall experience

There are different types of wood that can be used, but the best ones are:

• Canadian Hemlock

Canadian Hemlock is one of the most commonly used woods in infrared saunas because it performs well under constant heating and cooling cycles. It is highly resistant to shrinking, cracking, and splintering, which makes it last for a long time. It is also hypoallergenic and odorless, with a clean, light appearance that fits modern interiors without overpowering the space.

• Basswood

Basswood is valued for its purity and neutrality. It is 100% odor-free and non-toxic, and it contains no resins, reducing the risk of irritation when the sauna is heated. It also stays cool to the touch.

• Western Red Cedar

Western Red Cedar is often considered the premium choice due to its rich color and distinctive forest-like aroma. It naturally resists mold, mildew, and insects, which adds to its longevity. However, it is more expensive and slightly softer than other options, meaning it can show wear more easily over time. In rare cases, its natural oils and scent may also trigger sensitivities in highly reactive users.

Ultimately, the right wood choice depends on your priorities. Whatever species the cabin uses, check that the interior panels are untreated.

4. Cabin Size

When evaluating cabin size, it’s better to ignore the manufacturer’s “person capacity” label and focus on the actual interior dimensions. This is because a “two-person” sauna from one brand may offer a comfortable layout with enough room to stretch, while another may only accommodate two people sitting upright, shoulder to shoulder, with no personal space.

Typically, a single-person infrared sauna requires a minimum interior floor space of about 36″ x 36″ to avoid feeling cramped. This is the baseline for seated comfort, but it doesn’t always account for movement, posture changes, or longer sessions.

Two-person models usually start at approximately 47″ x 47″, but this is often tight if you want to stretch, lie down, or use the sauna for recovery work.

In practice, cabin size directly impacts how relaxed your session feels. A slightly larger unit can make a significant difference in comfort, airflow perception, and how freely you can change position during use. If you anticipate longer sessions or want more versatility in how you use the space, it’s best to size up rather than choose the smallest configuration that fits your needs.

5. Electrical Requirements

Most single-person infrared saunas run on a standard 120V outlet. Larger full-spectrum models with multiple heater arrays typically require a dedicated 240V circuit, so you’ll need to hire an electrician to install it.

6. Go for Reputable Brands

Lastly, only buy from reputable sauna brands. In infrared saunas, especially, details like build quality, EMF consistency, heater efficiency, and long-term durability can vary between manufacturers.

We recommend reputable brands like Finmark and Dynamic Saunas bevause they are reliable and offer quality heating performance. Most of our customers also love them because they’re easy to use as well:

Is a Full-Spectrum Infrared Sauna Worth the Upgrade?

This depends entirely on what you’re trying to achieve.

If your primary goal is deep muscle recovery and relaxation after workouts, a far-infrared model may meet your needs well at a lower price point.

However, if you want the flexibility to address a broader set of goals — skin health, surface tissue repair, circulation, and deep tissue warmth, all from a single unit — a full-spectrum model is your best bet.

Conclusion

Choosing an infrared sauna comes down to more than just picking something that looks good or fits your budget. The real difference lies in how well it’s built, how honest the brand is about what’s inside, and how comfortably it actually works once you start using it.

A good sauna should feel solid, run consistently, and fit naturally into your routine without you having to second-guess its safety or performance. That’s why it’s worth paying attention to the details and not just the headline features.

At the end of the day, the best choice is the one that matches how you actually plan to use it, whether that’s winding down after work, recovering after training, or simply creating a quiet space to switch off. If you get that part right, everything else tends to fall into place.

Not sure whether full spectrum is right for your space and goals? Take the Sauna Quiz. It walks you through a few questions about your setup and what you’re hoping to get out of your sessions, then points you toward models worth a closer look. Or talk to us directly. We respond in minutes and are happy to go back and forth until you feel confident in the choice.

FAQs

What’s the difference between full spectrum and far infrared?

Far infrared saunas use a single wavelength range that penetrates deepest into tissue. It’s great for core warming, muscle recovery, and cardiovascular response. Full-spectrum combines near-, mid-, and far-infrared wavelengths into one to cover surface tissue repair and soft-tissue relief in the same session.

Do I need a full-spectrum sauna if I just want to relax?

No. For relaxation, stress relief, and general wellness, a far infrared model delivers real results at a lower price point. Full spectrum becomes more relevant if skin health, targeted tissue repair, or flexibility across different wellness goals matter to you.

How often should I use an infrared sauna?

You can use the infrared sauna for three to four sessions per week of 30–45 minutes.

Are full-spectrum infrared saunas safe?

Yes, for most healthy adults. People with cardiovascular conditions, low blood pressure, or who are pregnant should consult a doctor before using any infrared sauna.

What EMF level should I look for?

Low-EMF or ultra-low-EMF models are the standard to look for. Most reputable brands publish their EMF ratings. If you’re buying from Norse Steam, our team can tell you the exact EMF specification for any model in our range.