FireLight® Infrared Bulb

The FireLight® Bulb delivers unmatched power, refined through years of research to offer the most effective light and heat therapy on earth.

As Seen In

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Gentle & Effective

Experience deep, penetrating warmth—without the suffocating heat of traditional saunas.

Innovative Spectrum

FireLight® mimics the sun’s spectrum—concentrated in the most healing infrared wavelengths, without the damaging rays.

Long-Lasting Performance

Engineered to last up to 5,000 hours with a 5-year warranty, these bulbs are a lasting investment in your health.

The FireLight® Spectrum: A Revolution in Heat and Light Therapy

The FireLight® Spectrum blends red and near-infrared light in the body’s most responsive range. It fuels energy, activates detox, and restores balance at the cellular level. This isn’t surface sweat. It’s deep, biological renewal.

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Graph of FireLight® Spectrum showing the 'Sweet Spot' of near infrared containing sections of '"Peak Light Therapy' and "Peak Heat Therapy' Graph of FireLight® Spectrum showing the 'Sweet Spot' of near infrared containing sections of '"Peak Light Therapy' and "Peak Heat Therapy'
FireLight Infrared Therapy Bulb turned on in dim room

FireLight: Key Features

  • Delivers 2-4x more red and near infrared wavelengths than competitors
  • Hight-Frequency Hard Quartz
  • Deep Red Stained, No Toxic Coatings
  • Zero Mercury
  • Zero plastics
  • Extremely long-lasting, 5,000 hour rating
  • 5-year warranty
  • 120 and 240 volt options (worldwide compatibility)

Limitless Benefits

Detoxification

Awaken your body's natural ability to expel impurities. Our FireLight® Spectrum activates & penetrates deeply, helping you detoxify at the cellular level so you feel refreshed and revitalized.

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Healing & Recovery

Harness your body’s innate power to heal. The FireLight® spectrum penetrates deep into muscles and tissues, accelerating recovery and reducing soreness, so you stay strong and resilient.

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Immune Support

Strengthen your body's defenses. The heat and light therapy from our saunas activate your immune response, helping you stay healthy and strong.

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Skin Rejuvenation

Boost your skin's natural glow. Regular exposure to our red and near-infrared light enhances collagen production, leaving your skin firmer, plumper and radiantly healthy.

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Stress Reduction

Melt away tension and restore balance. The FireLight® Spectrum calms the nervous system, helping you unwind, regulate stress, and feel more at ease.

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Better Sleep

Rest deeply and wake refreshed. Regular use of the FireLight® Spectrum can improve sleep quality by promoting relaxation and regulating your body's natural sleep cycles.

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Pain Relief

Melt away tension and discomfort. The FireLight® Spectrum improves circulation and reduces inflammation, providing natural relief from aches and pains.

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Emotional Balance

Elevate your spirits naturally. The FireLight® Spectrum increases the production of endorphins and serotonin, boosting your mood and helping you feel more balanced.

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Enhanced Cognition

Sharpen your focus and clarity. Red and near-infrared light stimulate brain function, enhancing cognitive performance and reducing mental fog.

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Athletic Performance

Train smarter, recover faster. The FireLight® Spectrum speeds up muscle recovery, helping you achieve your athletic goals with less downtime.

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Weight Loss

Support your wellness goals with ease. The FireLight® Spectrum increases heart rate and circulation, helping you burn calories more efficiently while you relax.

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Longevity

Invest in your future health. Regular sauna sessions can improve cardiovascular health, reduce inflammation, and support cellular rejuvenation, contributing to a longer, healthier life.

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The FireLight® Infrared Therapy Bulb FAQ

Have questions about the FireLight® Infrared Bulb? You’re not alone. Beneath its ruby glow lies a story of near infrared therapy, quartz glass brilliance, and radiant healing—refined through years of listening, learning, and luminous transformation. These answers aren’t just technical notes; they’re signposts on your red light wellness journey. Whether you’re curious about photobiomodulation, tungsten filament design, or simply the magic behind the glow, this is your space to explore. Let the questions illuminate. Let the answers warm you.

What makes the FireLight® Bulb so special?

The FireLight® Infrared Therapy Bulb isn’t just another red light—it’s the core of everything we create at SaunaSpace. Designed for therapeutic brilliance, it emits a powerful spectrum of red and near-infrared light (600–1000nm), perfect for cellular renewal, detoxification, and energy revitalization.

Crafted from red-stained hard quartz glass, it’s free of coatings, chemicals, and compromise. Inside, a high-Kelvin tungsten filament burns bright, offering deep radiant heat and targeted photobiomodulation. Every bulb is tested twice—once under thermal shock—to meet a higher standard of integrity and healing light.

How much heat does the FireLight® Bulb produce?

At 250 watts, the FireLight® Bulb runs hot—intentionally so. Surface temperatures can reach 300ºF (150ºC), delivering the penetrating warmth that makes near infrared therapy so transformative.

Used in our Glow and Hearth, this heat is safely contained within shielded ceramic sockets and protective stainless steel bulb guards. Avoid touching the glass during use.

Is it safe to keep my eyes open while using the bulb?

Yes, as long as you’re not staring directly at the filament. Many users relax, read, or work under its glow with eyes open or softly closed. Direct eye contact isn’t required—your cells still receive the benefits of red light and near infrared wavelengths. Trust your body’s signals and avoid any exposure that feels uncomfortable.

Can I use this bulb in a standard lamp or DIY setup?

It’s not recommended. The FireLight® Bulb requires a special fixture for humans: one that’s grounded, EMF-shielded, and built to withstand high heat output. Conventional lamps and sockets often fall short, increasing risk of EMFs, burns, or fire.

That’s why we've engineered our Glow Light and Hearth Sauna Panel for safety and performance. Pairing your bulb with its intended purpose-built home ensures optimal therapy and peace of mind.

What’s the best way to know when a FireLight® Bulb is ready to be replaced?

It’s refreshingly straightforward. If it still lights up, it’s delivering full-spectrum power. When it no longer turns on, it’s done. Unlike LEDs that fade over time, the FireLight® Bulb shines bright until its final moment.

How long will my FireLight® Bulb last?

With a 5,000-hour lifespan, most bulbs last 5 to 10 years depending on frequency of use. They maintain full brightness throughout their life. If purchased with a SaunaSpace product (Glow, Hearth, FireLight® Sauna, Shower Sauna Conversion Kit), your bulb is covered under our five-year warranty and eligible for discounted replacements afterward.

Does the bulb emit EMFs?

The bulb itself emits a minor electric field—typical of incandescent technology. For full protection, we recommend using it exclusively with our Glow, Hearth and FireLight® Sauna. Each is designed with built-in Faraday shielding to neutralize electric fields at the source.

Can I benefit from this bulb outside of a sauna?

Absolutely. The Glow and Hearth units bring FireLight® therapy into everyday settings—offices, bedrooms, meditation corners. Even without the sweat of a full sauna session, you’ll still receive rich red light, warmth, and mitochondrial support.

Is this a full-spectrum bulb?

Yes. The FireLight® Bulb delivers a broad therapeutic range of red and near-infrared wavelengths, unlike narrow-band LED devices. This allows for holistic rejuvenation, from muscle repair and detox to cellular energy production.

Is it safe to touch the FireLight® Bulb?

Not while it’s on or recently used. Even when cool, avoid touching the glass. Oils from your skin can create hot spots that may weaken the bulb over time. If touched, gently wipe it with rubbing alcohol and a microfiber cloth before turning it on.

What happens if water splashes on the bulb?

Each bulb is splash-tested during production to reveal hidden flaws. It can handle small, accidental spritzes of water, but it’s not meant for use in steam rooms or wet environments. Keep it dry to preserve integrity.

Can I use a dimmer with this bulb?

Technically, yes—but it’s not optimal. Dimmed output shifts the spectrum and reduces therapeutic benefit. For lower-intensity sessions, turn off one or more bulbs in the FireLight® Sauna. Our Glow and Hearth allow intuitive, flexible use outside of the sauna by simply adjusting your distance from the light.

Is the FireLight® Bulb safe for children and pets?

We don’t just test—we test twice. Each bulb is powered on and splash-tested at our partner facility, then again at our headquarters in Missouri.

From performance and consistency to physical integrity, we inspect every detail before it earns the FireLight® name. Only the best bulbs—those that glow with strength and safety—make it to your hands.