FDA Registration

Find out if the bed is FDA Registered - this is the first thing I look for when comparing red light beds - Many beds, mostly the Chinese imports, do not pass their tests and are still being sold and imported to the USA.

Power Requirements

A good red light bed should provide at least 50mw/cm2. Going over that or under is a presence on session time preferences.

Lipolysis

If using it for other reasons that lipolysis (fat loss) and not treating fat loss, you can get away with a lower powered bed. LEDs over 60mw do the deepest lipolysis and can liquify more fat than lower powered diodes. Post session lymph movement is almost always required if doing this.

Nitric Oxide

All of them will do it if they have the right wavelength - Some do it slowly and some do it fast. I urge people who are using high powered red light beds to do at least a 5 to 10 minute warm up to get into vasodilation and then use the bed. Best results when in a 3 degree artificial fever.

Multipurpose

I recommend a bed with 660nm if using just red light. If using with infrared diodes, I recommend 635nm diodes. Having a bed with 635nm diodes and deep infrared diodes offers most people the best results.

635nm or 660nm - which one to go with?

660nm is the deep red but if too close to the body can cause blisters or severe redness (severe Rosy Flush). 660nm is good if the diodes are not right under the panel where you lay on. Most 660nm diodes are 3 watt diodes and generate a lot of heat (latent heat). 635nm diodes produce way less latent heat and if they are almost touching the body, it is the most comfortable diode to use for an entire session. They have a high heat co-efficient and low latent heat. The deep reds have the highest heat co-efficient but need to be at least 3 watts to be effective since its uncomfortable to have them nearly touching the skin.

Overheating Concerns

People complain of itchy, sweaty backs from red light beds that generate lots of heat, usually the heavier types that need heavy heat sinks and fans.

Bed Shapes

Zero gravity - Zero gravity is good for those who prefer an easier way to get in and out of the bed or those who have back problems that need extra support.

Flat - Flat beds give people more room to move around who are positional intolerant. For long treatment times, it is easier to lay on a flat bed than a zero gravity or concave bed.