| Models |
 FireLight Sauna
|
 FireLight Hearth
|
 FireLight Glow
|
| Starting Price | $3,510 | $1,076 | $536 |
| Dimensions | 52in, 63in, 52in | 3 Bulb: 23.75in, 15.5 in, 9 in 4 Bulb: 23.75in, 23.5 in, 9 in |
13.5in, 7.5in, 9in |
| Overall Product Weight | 52.7 lb (23.9 kg) | 3 Bulb: 7 lb (3.2 kg) 4 Bulb: 11.4 lb (5.2 kg) |
3.6 lb (1.6 kg) |
| Full Body Light Therapy Coverage | ✓ | ✓ | x |
| Targeted Light Therapy | ✓ | ✓ | ✓ |
| EMF-Shielded Electronics | ✓ | ✓ | ✓ |
| EMF-Blocking Enclosure | ✓ | x | x |
| Warranty | 10 Years | 10 Years | 10 Years |
| Portable | ✓ | ✓ | ✓ |
| Session Time | 25-30 min w/ 4 Bulbs 15 min w/ 7 Bulbs |
25-30 min w/ 4 Bulbs 15 min w/ 7 Bulbs |
10 min on Head/Neck 10-45 min Rest of Body |
| Shop Now | Shop Now | Shop Now |
FireLight Infrared Bulb
Regular price
$240
Born from over a decade of research and development, the FireLight® Bulb is the heartbeat of everything we offer. It delivers optimized red and infrared light—concentrated in the near-infrared range and extending into mid and far—for unmatched light and heat therapy. With no flicker, and no blue light, this hand-blown bulb supports detox, circulation, cellular repair, and calm. Elemental light, biologically tuned for deep transformation.
Select a Voltage
120V USA
Order Processing: 1-3 Business Days
Specifications
General Specifications
Bulb type: R40
Socket type: E26
Base type: screw-in
Glass color: dark red
Coating/finish: none
Filament: C-9
Filament operating temperature: 2400K
Rated life: 5,000 hours
Product technology: incandescent
Glass processing: tempered, annealed
Glass production method: stained and blown
Dimensions
Bulb diameter: 4.9 in (125 mm)
Stem diameter: 1.7 in (42 mm)
Bulb height: 6.6 in (168 mm)
Materials
Bulb material: hard glass
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.
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.
LEARN MORE
Total 5 star reviews: 275 Total 4 star reviews: 11 Total 3 star reviews: 3 Total 2 star reviews: 2 Total 1 star reviews: 2
98%would recommend this product
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293 reviews
- JSJeff S.Verified BuyerRated 5 out of 5 stars2 months agoRed light therapy room
I actually took one of my walk-in closets and converted it into a red light therapy room made out of red cedar with a 2 inch thick raw edge piece of maple w/ 4 of your infrared bulbs .. I love it! I’ve been using it every day, in the morning for the last three months since completion.
- EEliseVerified BuyerRated 3 out of 5 stars5 months agoNot the same as their older “Thermalight”
I ordered this without reading the fine print, just assuming it was the same as the prior bulb that I had purchased from them because the price was about the same. I loved the prior bulb, which was a very deep red handblown glass. Honestly, I felt like the price was worth it for that bulb, but I’m not certain that it’s worth it for this one. It seems similar to other others I’ve seen on the market for less. It still seemed like a good bulb, but less than a month after buying it, I knocked the lamp over and the filament is now broken (my fault) so I need to replace and I’m looking elsewhere.
SaunaSpace4 months agoThank you for your honest feedback. We’re sorry to hear that the new bulb didn’t meet your expectations, and we appreciate the opportunity to clarify a few things regarding the changes.
As you mentioned, we switched to a new bulb design—the FireLight® Bulb—in November 2023. While it may look different from the previous ThermaLight Bulb, we assure you that it offers an enhanced experience. The new design uses a slightly lighter red hard quartz glass, which allows more irradiance to pass through, providing a more powerful light and heat therapy.
Our FireLight® Infrared Bulb delivers 2x the irradiance in the light therapy (photobiomodulation) band of red and near-infrared light (600nm - 1000nm) and also provides more heating. This makes the bulb not only more effective for light therapy but also offers a stronger therapeutic experience.
Thanks again for sharing your thoughts with us, and we hope you'll consider giving the FireLight® bulb another chance!
- KCkathleen c.Verified BuyerRated 5 out of 5 stars8 months agofirst purchase
i cannot afford a whole set-up right now, so i purchased a single bulb. i am enjoying it ( i believe i have seen an improvement in inflammation), so are my senior pups!
- AKAndrea K.Verified BuyerRated 5 out of 5 stars1 year 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.
- KKarenVerified BuyerRated 5 out of 5 stars1 year 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!
Firelight Q&A
What's special about our FireLight® Bulb?
Our proprietary FireLight® Infrared Bulb is the result of years of thoughtful testing and careful refinement, designed to be a big step up from the traditional incandescent bulb. It’s what powers every product we make, and it's built for serious light and heat therapy.
It has a specially tuned filament that runs at a higher Kelvin temperature. This shifts the emitted spectrum into higher frequency, so there's a higher percentage of 600-1000nm PBM wavelengths. So it’s more effective for both humans and animals than a regular heat lamp. And the glass? It’s not your average bulb glass. The glass is red-stained, hard quartz glass, unlike most bulbs which use cheaper soft glass and are not stained but instead are coated red or dyed red. That means no chemicals, no silicone, no teflon, and no mystery coatings. Just pure, clean light.
Each bulb is splash-tested while operating—yes, we literally splash cold water on it—to make sure there are no hidden flaws. Then, every bulb is tested again at our SaunaSpace factory before it reaches you.
How long does the FireLight® Bulb last?
Our signature FireLight® Infrared Bulb is manufacturer rated for 5000 hours of burn time and are covered by our warranty. Most customers receive 2-4 years of usage. Some users experience more time, some less. The bulbs will require replacement eventually. Incandescent bulbs are an analog technology, unlike LED. If your bulb turns on- you receive the same power and irradiance output every time, for the entire life of the bulb. If it does not turn on- it needs to be tested and possibly replaced! In contrast, LEDs will slowly dim (lose light therapy power) over time, becoming more and more unreliable.
How much heat does the FireLight® Bulb emit?
The FireLight® Bulb is 250W, with a filament temperature around 2400K. While the bulb itself gets quite hot, the glass temperature can exceed 300°F (about 150°C). For safety, our Glow and Hearth have protective guards designed to ensure you don't come into direct contact with the operating bulb, preventing any risk of burns. When used at the usage range from your body, it will effectively heat the local area, making it great for sauna or targeted use.
Can I stare at the FireLight® Bulb with my eyes open?
We suggest not to stare directly into the filament of the bulb. Most of our customers gaze around the Glow or Hearth™ with their eyes open or close their eyes while facing the bulbs during their session. Many will do both.
Can I use the FireLight® Bulb in my own fixture?
The FireLight® Bulb performs best when used with our Glow, Hearth™, and FireLight® Sauna. Our Hearth™ and Glow are designed for both safety and performance, featuring protective bulb guards to protect against burns and eliminate EMF exposure.
Each panel is handmade using heat-safe, untreated natural materials, and includes UL-listed wiring, sockets, and junctions. Every unit is fully shielded for EMF mitigation and backed by a comprehensive warranty.
Unlike mass-produced or brooder-style lamps, our panels offer:
- Built-in EMF grounding
- Burn protection through heat shields
- Certified safe components
- Full 5 year product warranty
Using the FireLight® Bulb not in a Glow or Hearth™
The FireLight® bulb must be used in a fixture rated for 250 watts. Read our detailed guidance on compatible fixtures and safe usage.