Red light therapy vs infrared sauna
They share the word 'infrared' and almost nothing else. One heats your whole body; the other delivers specific wavelengths to whatever faces it. Here is the difference.
The short version: an infrared sauna is a heating device. A red light panel is a light-delivery device. They share a word because both involve the infrared part of the spectrum, and that is genuinely most of what they have in common.
| Infrared sauna | Red light panel | |
|---|---|---|
| Primary effect | Raises body temperature; you sweat | Delivers 660/850 nm light to exposed skin |
| Dominant wavelength band | Far infrared (heating) | Red and near infrared |
| Do you sweat? | Yes, that is the point | No |
| Session length | 30–45 min | Minutes |
| Space needed | A cabin | A panel and somewhere to stand |
| Power draw | 1,500–3,600 W | Tens to hundreds of watts |
| Circuit | Dedicated 20 A, or 220 V | Standard outlet |
| Research base | Whole-body heat, sweating, cardiovascular | Photobiomodulation — skin, localized tissue |
Why the shared word confuses things
Infrared is a broad slice of the spectrum. Far infrared — the long-wavelength end — is absorbed at the surface and turns into heat, which is what makes an infrared sauna warm. Near infrared — the short-wavelength end, around 810–850 nm — penetrates further and is where the photobiomodulation literature sits.
A conventional infrared sauna emits far infrared. A red light panel emits red and near infrared. A full-spectrum sauna emits both, which is why it is the product that muddles the categories. See full spectrum vs far infrared.
The research does not transfer
This is the point that matters most and gets ignored most.
Sauna research is largely about heat: raising core temperature, cardiovascular responses, and long-term observational studies of habitual sauna use. Red light research is about specific wavelengths at specific doses delivered to tissue, and it concerns skin, wound healing and localized musculoskeletal outcomes.
Citing a sauna study to support a red light panel, or vice versa, is a category error — and it happens constantly in marketing for both. We keep the two separate: sauna benefits and red light therapy evidence cite different literatures because they are different literatures.
Which should you buy?
They are not substitutes, so the honest answer depends on what you want:
- You want to sweat, sit in heat, and have a ritual. Sauna. A panel does none of that.
- You want specific wavelengths on skin or a specific area. Panel. A sauna does not deliver a controlled dose to a target.
- You have no space and no circuit. Panel, easily — it plugs into a normal outlet and hangs on a door.
- You want both and have the budget: a far-infrared cabin plus a standalone panel is usually cheaper than a full-spectrum cabin and gives you control over the panel's distance.
Running cost, briefly
A panel is trivially cheap to run — tens to hundreds of watts for a session measured in minutes. A sauna is more, though still modest: a 2,240 W cabin for 45 minutes is about $0.29 at $0.17/kWh at the upper bound.
Neither cost should decide this. The real difference is upfront and installation: a panel plugs into a wall, and a sauna may need an electrician. That is the number that matters. See sauna running costs.
Can you use both together?
Yes, and plenty of people do — a panel before or after a sauna session. What we would not do is put a panel inside a hot cabin: most panels are not specified for sustained operation at sauna temperatures and manufacturers rarely publish an operating range. Using it outside the cabin avoids the question entirely.
One of each, if you want both
Full-Body Red Light Therapy Panel, 5 Wavelengths, 120 Dual-Chip LEDs
Generic Amazon listing
#ad Price as of October 23, 2026. We earn a commission if you buy, at no extra cost to you. How this is funded.
Five wavelengths across 120 dual-chip diodes, with a published wattage. Dual chip means every LED emits more than one wavelength, so coverage is even rather than striped.
| LEDs | 120, dual chip |
|---|---|
| Wavelengths | 5, per the listing |
| Power | 200 W |
| Board size | Not published in the listing |
| Stand | Not published in the listing |
| Irradiance | Not published at a stated distance |
What works
- A published wattage and LED count
- Dual-chip diodes, so both main wavelengths come from every LED
- More wavelengths than the two-wavelength boards at this size
What doesn't
- No published board dimensions
- No irradiance figure at any distance
- Extra wavelengths have a thinner research base than 660 and 850 nm
Skip it ifyou want the largest treated area per dollar. Wavelength count is not coverage.
Dynamic Lugano 3-Person Far Infrared Sauna
Dynamic Saunas
#ad Price as of October 23, 2026. We earn a commission if you buy, at no extra cost to you. How this is funded.
One of the few cabins in this price class that puts an EMF number in the listing rather than the word 'low' on its own — which is the only reason it can be ranked against anything.
| Capacity | 3 person |
|---|---|
| Wood | Canadian hemlock |
| Heater type | Carbon far-infrared panels |
| EMF, as published | Under 8 mG |
| Measurement distance | Not published |
| Spectrum | Far infrared only |
| Power draw | Not published in the listing |
What works
- Publishes an actual EMF figure instead of the unqualified word 'low'
- Hemlock rather than a softwood that resins at temperature
- Three-person footprint without the premium-tier price
What doesn't
- The EMF figure has no stated measurement distance, so it cannot be compared like for like
- Far infrared only — no near or mid wavelengths
- Assembly is genuinely a two-person job
Skip it ifyou want full-spectrum output. This is a far-infrared cabin and no amount of marketing language changes that — if near infrared matters to you, you are shopping in a different tier.
Supersred Red Light Therapy Panel, 1,500 W Dual-Chip Board
Supersred
#ad Price as of October 23, 2026. We earn a commission if you buy, at no extra cost to you. How this is funded.
Dual-chip diodes, so both wavelengths come from every LED rather than alternating across the board. The listing publishes a wattage and the wavelengths and nothing else — no board size, no irradiance.
| Power, per the listing | 1,500 W lamp board |
|---|---|
| Wavelengths | 660 nm and 850 nm, dual chip |
| Board size | Not published in the listing |
| LED count | Not published in the listing |
| EMF | Not published |
| Irradiance | Not published at a stated distance |
What works
- Dual-chip LEDs, so coverage is even rather than striped
- A stated wattage, which most panels at this price omit
- Both research-backed wavelengths in one board
What doesn't
- No published board dimensions, so coverage cannot be checked before it arrives
- No irradiance figure at any distance
- A lamp wattage is not the same as delivered output
Skip it ifyou need to know the treated area before buying. This listing will not tell you how big the board is.
Questions people actually ask
What is the difference between red light therapy and an infrared sauna?
Is an infrared sauna the same as red light therapy?
Which is better, red light therapy or an infrared sauna?
Can you use a red light panel in a sauna?
Do I need both a sauna and a red light panel?
Sources
- Hamblin MR, 'Mechanisms and applications of the anti-inflammatory effects of photobiomodulation', AIMS Biophysics (open access) — checked Sep 7, 2026
- Laukkanen T et al., 'Association between sauna bathing and fatal cardiovascular and all-cause mortality events', JAMA Internal Medicine — checked Sep 7, 2026
Read next
- Red light therapy evidenceThe photobiomodulation literature.Read it
- Sauna benefits and the evidenceThe sauna literature, separately.Read it
- Best red light therapy panelsIf the panel is what you want.Read it
- Best infrared saunasIf the sauna is what you want.Read it
- Sun Home Eclipse vs Sunlighten Amplify REDBoth in one cabin.Read it
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.