PEMF mats arrive with spec sheets full of numbers: hertz, coils, programs. Most buyers have no way to judge them.
This article explains what the numbers mean and what they don’t. For the wider category, start with the home wellness equipment buying guide.
Short answer: the Hz range tells you how fast the field pulses, not how well the mat works. The research uses devices so different from each other that no setting is proven best. Buy on build, controls, and warranty.
What a PEMF mat is
PEMF means pulsed electromagnetic field. Coils inside the mat produce a magnetic field that switches on and off.
Many mats add other things. The Hooga Red Light PEMF Mat combines three: PEMF, red and near-infrared LEDs, and far-infrared heat.
Reading the spec sheet
| Spec | Hooga Red Light PEMF Mat | What it means |
|---|---|---|
| Frequency | 0.9 to 100 Hz | Pulses per second |
| Cores | 6 | Number of PEMF coils in the mat |
| LEDs | 150 (75 red, 75 near-infrared) | The light part, separate from PEMF |
| Heat | 86 to 140°F | Far-infrared heat, separate again |
| Programs | 14 presets, plus manual frequency | How you control it |
| Power | 100 to 240V | Works on any household supply |
| Warranty | 3 years | |
| Price | $1,199 |
From the Hooga listing, checked September 2026.
Here’s what the spec sheet won’t tell you: the listing gives the frequency but not the field strength. The research reports both.
What the research used
A 2024 systematic review in the Journal of Clinical Medicine looked at 17 randomized trials of PEMF for osteoarthritis, with 1,197 patients.
The devices in those trials had little in common:
- One ran at 15 Hz and 30 mT.
- One ran at 75 Hz.
- Others ran in the megahertz range, thousands of times faster.
- Treatment lasted from 15 to 90 days.
The authors concluded PEMF has “potential as a comprehensive approach for managing osteoarthritis.” They also wrote that “the variability in the treatment duration and device types calls for further investigation.”
What that means for a mat
A wide Hz range gives you options. The research doesn’t tell you which option to pick, because the studies didn’t agree on one.
So I wouldn’t pay extra for a wider range or more presets by themselves. And the trials were on osteoarthritis patients using specific devices. They don’t show that a home mat does the same.
Combination mats
You get three therapies in one session with a mat like the Hooga, each with its own controls. You give up $1,199, and there’s more that can go wrong than in a single-purpose device.
Judge each part separately. On the red light part, Cleveland Clinic says there isn’t enough evidence to support most uses.
What to check before buying
- A published frequency range, not only “levels.”
- The number of coils.
- Independent controls, so you can turn off what you don’t want.
- Warranty length. Hooga gives 3 years.
- Whether you want all the therapies you’re paying for.
My rule of thumb: if you have a diagnosed condition, ask your doctor before buying a mat for it. That includes anyone with an implanted medical device.
For devices with a clearer use case, see the recovery equipment buying guide.
Bottom line: hertz and coil counts describe the hardware. They don’t predict results. Buy the mat for its build and warranty, and keep expectations modest.
This article is general information, not medical advice.
Sources
- Cianni L. et al., “Current Evidence Using Pulsed Electromagnetic Fields in Osteoarthritis: A Systematic Review,” Journal of Clinical Medicine, March 28, 2024: pmc.ncbi.nlm.nih.gov
- Hooga Red Light PEMF Mat listing (frequency, cores, LEDs, heat, programs, warranty, price), checked September 2026
- Cleveland Clinic, “Red Light Therapy: Benefits, Side Effects & Uses,” last updated December 1, 2021: my.clevelandclinic.org