The SaunaBox Pulse PRO and the Relax Sauna Black Pro are both portable infrared saunas, but they deliver heat in fundamentally different ways. The Pulse PRO combines far-infrared panels with integrated dual-wavelength red light therapy at 160°F. The Relax Black Pro uses a patented dual FIR conductor system delivering far infrared only at up to 170°F. Here is how every major spec compares.
How do SaunaBox Pulse PRO and Relax Sauna Black Pro compare on published specs?
| Specification | Relax Sauna Black Pro | SaunaBox Pulse PRO | Source / Basis |
|---|---|---|---|
| Infrared type | Far infrared only. 7,000 to 14,000 nm wavelength range (7 to 14 microns). | Far infrared via ThermoCell panels plus dual-wavelength red light therapy at 660 nm and 850 nm. | Product pages of both brands. |
| Max temperature | 140 to 170°F per relaxsaunas.com FAQ and Breakthrough Technology page. | 160°F. Higher than most portable infrared saunas in this category. | Product pages and FAQ of both brands. |
| Wattage | 1,400W. | 1,600W. Higher power output for faster heat-up. | Product pages of both brands. |
| Red light therapy | Not included. Far infrared only. No red light LEDs. | Yes. 320 medical-grade LEDs at 660 nm and 850 nm. 63.19 mW/cm2 irradiance at surface. Manufactured in FDA-registered facility. | Product pages of both brands. |
| Dimensions | 32″ × 33″ × 46″. Shorter profile. User sits lower. | 36″ L × 36″ W × 68″ H. Taller tent allows seated upright posture with head outside. | Product pages of both brands. |
| Weight | 33 lbs. Extremely lightweight and portable. | Weight not published on saunabox.com product page. Includes carry bag for portability. | Product pages of both brands. |
| Setup time | Portable pop-up style. Setup time not specified on product page. | 15 minutes. Easy pop-up setup. No tools required. | Product pages of both brands. |
| Materials certification | No third-party materials certifications published on relaxsaunas.com as of June 2026. | OEKO-TEX certified. PFAS-free tested. Safety certifications listed on saunabox.com certifications page. | Certifications pages of both brands, June 2026. |
| EMF | EMF data not published on relaxsaunas.com as of June 2026. | Ultra-low EMF with EMF shielding design. Specific mG reading not published. Request documentation from SaunaBox if this is a priority. | Product pages of both brands, June 2026. |
| Heater technology | Patented dual FIR conductor system. Silver-lined interior for enhanced reflectivity. | ThermoCell far-infrared panels. MylarMax heat-reflective liner. | Product pages of both brands. |
| Control | Controller included. Details not specified on product page. | Bluetooth remote control. Adjustable temperature settings. | Product pages of both brands. |
| HSA/FSA eligible | Yes, per relaxsaunas.com footer links. | Yes, via TrueMed per saunabox.com. Save an average of 30%. | Product pages of both brands. |
| Warranty | Warranty not published on product page as of June 2026. | 1-year limited warranty. Confirm current terms at saunabox.com. | Product pages of both brands. |
| Included accessories | Not detailed on product page. | Wood stool, floor mat, red light panels, storage bag included. | Product pages of both brands. |
| Professional use | Designed for professional settings. Rated for 15 to 20 uses per day. | Designed for home use. Portable for travel and hotel rooms. | Product pages of both brands. |
| Price | $2,300 per relaxsaunas.com. | Varies from $699 to $900. Check saunabox.com for current pricing. | Product pages of both brands, June 2026. |
What is the real difference between SaunaBox Pulse PRO and Relax Sauna Black Pro?
Direct answer
The Pulse PRO combines far-infrared heat with integrated red light therapy in a taller tent format designed for home users who want both modalities in one product. The Relax Black Pro is a far-infrared-only sauna built for professional durability and higher daily use volume. These are different products for different buyers.
The SaunaBox Pulse PRO delivers far-infrared heat through ThermoCell panels and adds 320 medical-grade LEDs at 660 nm (visible red) and 850 nm (near-infrared). These two wavelengths are the most studied in photobiomodulation research. The published irradiance is 63.19 mW/cm2 at the surface, which is within the therapeutic range cited in peer-reviewed studies.
The Relax Sauna Black Pro delivers far infrared only through its patented dual FIR conductor system in the 7 to 14 micron wavelength range. It does not include red light therapy. The silver-lined interior is designed to reflect infrared energy back toward the user for more efficient heating. This is a well-established approach in far-infrared sauna design.
For buyers who want both infrared heat and red light therapy in a single portable product, the Pulse PRO is the only option in this comparison that delivers both. For buyers who want far-infrared-only heat at the highest intensity in a professional-grade enclosure, the Relax Black Pro is purpose-built for that use case.
The practical difference in a session: the Pulse PRO user gets infrared heat plus red light exposure to the torso and legs simultaneously. The Relax Black Pro user gets concentrated far-infrared heat only, potentially at a higher max temperature (up to 170°F vs 160°F), but without the photobiomodulation component.
How does price compare between SaunaBox Pulse PRO and Relax Sauna Black Pro?
Direct answer
The SaunaBox Pulse PRO varies from $699 to $900. The Relax Sauna Black Pro is $2,300. The Pulse PRO costs less than one-third of the Relax Black Pro while including red light therapy, OEKO-TEX certification, and a published setup time that the Relax does not offer.
The Relax Black Pro is priced for professional settings where the sauna will be used 15 to 20 times per day. For home buyers who want a portable infrared sauna with red light therapy for personal use, the Pulse PRO delivers more features at a significantly lower price point.
What certifications does SaunaBox Pulse PRO have that Relax Sauna does not?
Direct answer
The SaunaBox Pulse PRO is OEKO-TEX certified and PFAS-free tested. OEKO-TEX is an independent textile certification that tests for harmful substances including heavy metals, pesticides, and formaldehyde. PFAS-free testing confirms the absence of per- and polyfluoroalkyl substances.
The Relax Sauna Black Pro does not publish third-party materials certifications on their product page as of June 2026. The Relax product page references a patented dual FIR conductor system but does not name independent testing labs or materials safety certifications. Buyers who prioritize materials transparency should check directly with Relax Saunas for their current testing documentation.
What are SaunaBox Pulse PRO's genuine strengths?
- Reaches 160°F with 1,600W of power. Higher wattage than the Relax Black Pro.
- 320 medical-grade red light LEDs at 660 nm and 850 nm with 63.19 mW/cm2 published irradiance.
- OEKO-TEX certified and PFAS-free tested. Materials safety documented by a third party.
- Sets up in 15 minutes with no tools. Published setup time.
- Varies from $699 to $900. Less than one-third the price of the Relax Black Pro.
- Includes wood stool, floor mat, red light panels, and storage bag.
Who should buy SaunaBox Pulse PRO and who should buy Relax Sauna Black Pro?
- You want red light therapy included in your portable sauna.
- You want OEKO-TEX and PFAS-free certified materials.
- You want a portable sauna at an accessible home-use price point.
- You want a taller tent that allows seated upright posture.
- You want published irradiance data for the red light panels.
- You need a sauna rated for professional use at 15 to 20 sessions per day.
- You want the highest possible far-infrared temperature (up to 170°F).
- You do not need red light therapy as part of your session.
- You want the lightest possible unit at 33 lbs for frequent transport.
- You prioritize far-infrared intensity over additional modalities.
Frequently asked questions
For home buyers who want red light therapy, certified materials, and an accessible price, the Pulse PRO is the stronger product. For professional settings requiring high daily use volume and maximum far-infrared intensity without red light, the Relax Black Pro is purpose-built for that use case.
No. The Relax Black Pro delivers far infrared only in the 7 to 14 micron wavelength range. It does not include red light LEDs. If red light therapy is a priority, the SaunaBox Pulse PRO is the only option in this comparison that delivers it.
The Pulse PRO reaches 160°F. The Relax Black Pro reaches 140 to 170°F per their FAQ and Breakthrough Technology page. The Relax may reach a slightly higher max temperature, but the Pulse PRO delivers higher wattage (1,600W vs 1,400W) and includes red light therapy that the Relax does not.
The Pulse PRO is OEKO-TEX certified and PFAS-free tested. The red light panels are manufactured in an FDA-registered facility. Full certification documentation is available on the SaunaBox certifications page at saunabox.com.
The Relax Black Pro is priced at $2,300 and is designed for professional settings with 15 to 20 uses per day. The higher price reflects commercial-grade durability rather than additional features for home users. The Pulse PRO at $699 to $900 includes red light therapy and certified materials that the Relax does not offer.
15 minutes with no tools required. The Relax Black Pro is also portable and pop-up style, but does not publish a specific setup time on their product page.
Yes. The Pulse PRO has been tested and confirmed PFAS-free. PFAS are synthetic chemicals found in some consumer products that have raised health concerns. The Relax Sauna Black Pro does not publish PFAS-free testing documentation on their product page as of June 2026.
The Pulse PRO is designed primarily for home use and travel. The Relax Black Pro is explicitly designed for professional settings with high daily use volume. If you need a sauna for a spa, clinic, or wellness studio with 15 or more sessions per day, the Relax Black Pro is built for that workload.
The bottom line
SaunaBox Pulse PRO vs Relax Sauna Black ProBoth products deliver portable infrared heat. The Pulse PRO goes further for home buyers: red light therapy, OEKO-TEX and PFAS-free certified materials, higher wattage, and a price point under $900. The Relax Black Pro is built for professional environments where far-infrared intensity and daily use volume matter more than additional modalities.
If you want portable infrared heat with red light therapy and certified materials at an accessible price, the Pulse PRO is the more complete product for home use.
Shop the SaunaBox Pulse PROSources and references
- SaunaBox Pulse PRO product page and specifications. saunabox.com. Checked June 2026.
- SaunaBox certifications page. saunabox.com. Checked June 2026.
- Relax Sauna Black Pro product page and specifications. relaxsaunas.com. Checked June 2026.
- OEKO-TEX Standard 100 certification information. oeko-tex.com.
- US Environmental Protection Agency. PFAS Explained. epa.gov.
- Hamblin MR. Mechanisms and applications of the anti-inflammatory effects of photobiomodulation. AIMS Biophysics, 2017.
- Laukkanen JA et al. Cardiovascular and other health benefits of sauna bathing. Mayo Clinic Proceedings, 2018.
Disclaimer: This content is for informational and comparison purposes only and should not be construed as medical advice. All specifications reflect what each brand publishes on their website as of June 2026. Verify current specifications, pricing, and warranty terms directly with each brand before purchasing. If you have any underlying health conditions, consult a qualified healthcare clinician before beginning infrared sauna therapy.
