FireLight Infrared Bulb
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SKU: BT00120000N UPC: 810018190002
Experience infrared therapy the way nature intended with our proprietary FireLight® bulbs (formerly known as ThermaLight®). We spent years perfecting a spectrum that delivers near, mid, and far infrared, plus red light just like the sun—but with none of the harmful UV.
The bottom line: you get the best heat and light therapy in less time. Sweat faster, feel better.
- No harmful UV light
- No blue light
- No flicker stress
- Delivers 2–4x more red and near infrared wavelengths than competitors
- Mouth-blown stained glass made using ancient techniques
Note: Our stained glass bulbs are handmade and unique, which means they may have slight color variations that in no way affect performance. Each bulb goes through a strict quality control process to ensure your satisfaction.
*Two-year warranty applies to FireLight® Bulbs used as intended in SaunaSpace products. For all other uses, warranty is limited to one year. When you make a warranty claim, SaunaSpace may ask for proof of purchase of accompanying SaunaSpace products before processing the claim.
Weight
3.2 oz (91 g)
Dimensions
Bulb diameter: 4.9 in (125 mm)
Stem diameter: 1.7 in (42 mm)
Bulb height: 6.6 in (168 mm)
General specifications
Bulb type: R40
Socket type: E26
Base type: screw-in
Glass color: dark red
Coating/finish: none
Filament: C-9
Rated life: 5,000 hours
Bulb material: hard glass
Product technology: Incandescent
Glass processing: tempered, annealed
Glass production method: mouth-blown, hand-rolled
Cap-base material: brass
Electrical info
Wattage: 250 W
Input voltage and frequency: 120V at 50–60 Hz1, 240 V at 50–60Hz2
1120V is used in USA, Canada, Mexico, Japan and other select countries.
2240V is used in Europe, Asia, South America, and Australia/New Zealand, and most of the rest of the world.
Don't know which voltage to select? Learn which is correct for you in our FAQ.
Operating specifications
Max operating temperature: 570 °F (299 °C)
Intensity: 1400 W/m2 at 1 ft (305 mm)
Lamp fixture: intended for use only in a lamp fixture rated for minimum 250 W*
*use in a lamp fixture not meeting the wattage rating requirement voids the warranty. Learn more about our FireLight® warranty.
Approvals
CE-certified
RoHS-certified
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No One Does Infrared Like Us
We’ve spent years crafting the perfect hand-blown sauna bulb. We mimic the best of the sun—with none of the harmful UV—to create full-spectrum infrared therapy that is truly one of a kind.
See How it WorksReviews and Questions
- AKAndrea K.Verified BuyerI recommend this productBenefits I Notice Pain Reduction, Less Inflammation, Reduced Screen/Technology Fatigue, Radiant Skin, DetoxMy Favorite Features Nature’s FireLight Spectrum Indoors, Convenience of Sauna at Home, Combining Light & Heat Therapy, Portability, GroundingAge 40-49Rated 5 out of 5 stars3 months agoSignificant reduction in inflammation!
My father has recently been diagnosed with a rare genetic mutation called Vexas, which causes severe inflammation of the cartilage throughout the body, particularly in the nose and ears.
After only 10 minutes of exposure to the sauna space infrared bulb, there was a significant reduction in inflammation. Regular use has also been helping to reduce the pain and redness.
I also have a sauna space bulb and look forward to using it daily to ease aches and pains, rejuvenate my skin, reduce screen fatigue, and simply enjoy basking under the glow.
Was this helpful? - KKarenVerified BuyerI recommend this productBenefits I Notice Pain Reduction, Faster Injury Recovery, Radiant SkinMy Favorite Features USA-Handcrafted Quality, Portability, Combining Light & Heat Therapy, Nature’s FireLight Spectrum IndoorsAge 60-69Rated 5 out of 5 stars6 months agoUseful light for so many ailments!
I began using this infrared light in 2021 when my dog was hit by an suv and broke her leg in two places. I applied the light throughout the day for five minutes per session. She made a miraculous recovery and we never had to amputate that leg.
The pictures below show the broken leg and the middle picture is her other leg with wounds she sustained. The third picture was taken the day after I applied infrared light to that particular leg. The healing process was quick!
Since then, I’ve purchased a second bulb for my 86 year old mother to use. She loves it. She uses it on her lower lumbar area. I can’t say enough great things about this light. I love it!
Was this helpful? - GBGina B.Verified BuyerI recommend this productRated 5 out of 5 stars1 year agoBulb & Bodacious
I've had my Sauna Space for about 2 years now and love it and use it every day. The bulb lasted a long time and I replaced it for the first time recently. Came quickly, beautifully packed and super easy to install. I'm so happy I bought this product and would like one day to make the investment in a larger system. I've recommended it to others. Feels so good! Thank you for this really nice company that makes lovely products.
Was this helpful? - KFKate F.Verified BuyerI recommend this productRated 5 out of 5 stars1 year agoLove the ThermaLight Infrared Bulb
Love this light bulb, especially in the winter. I use it daily. It’s been helping my skin and my mood! The red light and heat is calming and therapeutic, my dog loves it too!
Was this helpful? - ANAdam N.Verified BuyerI recommend this productRated 5 out of 5 stars2 years agoAdded proton w ThermaLight bulb
Added proton w ThermaLight bulb to my Faraday set for some extra juice and it didn’t disappoint! Can definitely feel the difference with the new Thermalight bulbs vs the old school ones. Definitely intend to gradually replace older bulbs with the newer ThermaLight ones.
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