Adding red light to an existing sauna
Retrofitting tubes into a cabin's wiring is not realistically available. A standalone panel is — with one specification caveat that decides how you use it.
You own an infrared cabin. It is far infrared, and you want the near-infrared and red wavelengths a full-spectrum cabin offers. The question is what is actually achievable without replacing the cabin.
What is not realistically available
Retrofitting tubes into the cabin's own wiring. Cabins are built as sealed units with the emitters wired to a controller sized for those emitters. Adding load to that circuit is not a consumer modification, manufacturers do not sell retrofit kits for their own cabins as a general rule, and doing it yourself means modifying a mains-powered appliance in a humid, hot enclosure.
So the practical answer is a standalone panel, and the useful question becomes how to use one with a sauna you already have.
The temperature caveat
The approach we would take
Use the panel outside the cabin, before or after the session. It costs a few minutes, it removes the temperature question entirely, and it gives you something the built-in version cannot: control over the distance between the emitter and your skin, which is what determines dose.
Practically, that looks like: panel session in the room outside the sauna, then the sauna. Or the reverse. Neither order has a research basis we would cite — this is a practical arrangement, not a protocol.
Choosing the panel
- 1Board area for the use you have. A narrow board suits targeted work — a back, a shoulder. A full-body board means one position and one timer.
- 2Dual chip 660/850 nm. Both wavelengths from every diode, which means even coverage rather than striping.
- 3Mounting that suits the space. A door hook, a wall mount or a stand. Check what is included, because listings often do not say.
- 4Ask for the irradiance figure and distance. Nobody publishes it, but asking costs nothing and how a company responds is informative. See irradiance explained.
Panels that suit a retrofit
Supersred Red Light Therapy Panel, 36" × 8"
Supersred
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A tall, narrow board covers a back or a leg properly without the price or the wall space of a full-body panel.
| Board size | 36" × 8" |
|---|---|
| LEDs | 200, dual chip |
| Wavelengths | 660 nm and 850 nm |
| EMF | Described as lower EMF; no figure given |
| Flicker | Described as flicker free |
| Irradiance | Not published at a stated distance |
What works
- Physical board dimensions published, so you can plan the mount
- Flicker-free is a real and meaningful driver-quality claim
- LED count published alongside the board size
What doesn't
- A narrow board means repositioning for full-body coverage
- 'Lower EMF' carries no figure and no measurement distance
- No irradiance data
Skip it ifyou want to stand in front of it and be done. A narrow board is a targeted tool; treating it as full-body means three positions and three timers.
Full-Body Red Light Therapy Panel, 660 nm + 850 nm Dual Chip
Generic Amazon listing
#ad We earn a commission if you buy, at no extra cost to you. How this is funded.
Dual-chip LEDs put both wavelengths in every diode rather than alternating them across the board, which is what makes coverage even instead of striped.
| Wavelengths | 660 nm red, 850 nm near infrared |
|---|---|
| LED type | Dual chip |
| Coverage | Full-body panel |
| Irradiance | Not published at a stated distance |
| Mounting | Not published |
| Power figure | Quoted as LED rating, not measured wall draw |
What works
- Both of the well-studied wavelengths in every diode
- A full-body board rather than a targeted spot panel
- Wavelengths stated in nanometres, which many listings still avoid
What doesn't
- No irradiance figure at a stated distance — the spec that actually matters
- Advertised wattage is an LED rating, not measured wall draw
- No mounting hardware detail published
Skip it ifyou are trying to choose on irradiance. Nobody in this category publishes it at a stated distance, so you are buying on coverage and wavelength alone.
EXESAS Red Light Therapy Device, 400 W, 80 LED
EXESAS
#ad We earn a commission if you buy, at no extra cost to you. How this is funded.
Fewer, higher-output diodes rather than many small ones — a different design philosophy that concentrates output at the cost of even coverage.
| Rated power | 400 W (LED rating) |
|---|---|
| LEDs | 80, dual chip |
| Wavelengths | 660 nm and 850 nm |
| Use | Full body and face |
| Irradiance | Not published at a stated distance |
| Wall draw | Not published |
What works
- 5 W per diode is genuinely high output per LED
- Both wavelengths in each diode
- Sized for face work as well as body
What doesn't
- Fewer diodes means more visible hot-spotting at close range
- Rated wattage is not measured wall draw
- No irradiance figure
Skip it ifyou want even coverage up close. Fewer, brighter diodes hot-spot; more, dimmer diodes do not.
If you genuinely want it inside the cabin
Two conditions, both non-negotiable. First, get an operating temperature range from the manufacturer in writing and confirm your cabin's operating temperature is inside it. Second, be aware that the cabin's humidity is part of the question too — a dry infrared cabin is a different environment from a traditional sauna where you throw water, and no consumer panel is built for the latter.
If both conditions are met, mount it where it is not in contact with a heater panel and where the distance to your body is what you want. If either condition is not met, use it outside the cabin. There is no version of this where guessing is the right approach.
The alternative: accept the cabin is what it is
A perfectly reasonable outcome. A far-infrared cabin is a good product doing the thing it was built for. Adding a panel is an addition rather than a correction, and if you use the cabin regularly and are happy with it, the honest answer may be that you do not need to add anything.
If you are unsatisfied with the cabin itself — too small, not hot enough — that is a different problem and a panel does not solve it. See infrared sauna upgrade kits for what is and is not fixable.
What about replacing the cabin?
Worth pricing properly before deciding. A full-spectrum cabin typically draws around 3,600 W and needs 220 V — an electrician, a permit in most jurisdictions, and a real install cost on top of the cabin. A far-infrared cabin you already own plus a panel on a normal outlet avoids all of that.
Unless there is something else wrong with your current cabin, replacing a working far-infrared cabin to get built-in tubes is an expensive way to obtain wavelengths a panel delivers with more control. See full spectrum vs far infrared.
Questions people actually ask
Can you add red light therapy to an existing infrared sauna?
Can you put a red light panel inside a sauna?
Is it worth replacing a far infrared sauna with a full spectrum one?
Should I use red light before or after a sauna?
Sources
Read next
Every pick on this page comes from published specifications, not from hardware we own. Read how we pick — including what spec-led ranking cannot tell you.