I am not affiliated in any way with Sunlight Saunas, but I have read good things about them from customers. Here are some reasons I'm comfortable giving my recommendation.
About SunLight
Sunlight Saunas was founded in 1999. They sell infrared saunas for both residents and businesses.
A Sunlight infrared sauna is a pre-fabricated kit that you can easily assemble and set up anywhere. The best part is you won’t even need tools.
Endorsements
Sunlight has received endorsements from doctors and health professionals.
Dr. Mark Hyman's book UltraMetabolism mentions the use of an infrared sauna for relaxation, stress reduction, and as a weight loss aid. He owns a sauna from Sunlight and he recommends one for his patients.
Advantages
Sunlight says that their Solocarbon infrared heaters have been tested more than any other infrared heating system.
The company said, “From being shown to raise your body’s core temperature and help lower blood pressure, Solocarbon sauna heater has been tried and true.”
Other claims made by Sunlight:
Solocarbon has been tested extremely safe levels due to steel conduit electrical shielding
Solocarbon has shown to emit more far infrared which promotes a deeper sweat.
Solocarbon saunas heater provides a better sauna experience because of the higher quality.
Solocarbon saunas heater provides continuous and evenly distributed infrared heat so you receive a constant flood of heat.
Sunlight’s Signature line of saunas are built with thick walls for durability. They’re also made with floor and side heaters for maximum heat distribution.
Other features include removable backrests (so you can assume multiple positions), programmable timers, premium sound systems with AM/FM radio and cd player, and an optional dvd player in some models.
Two important things to know:
1. Electrical certifications ensure that the sauna has been tested to meet safety and performance standards. Sunlight Saunas have met those standards.
2. Sunlight’s Signature and Solo models are backed by a lifetime warranty on heaters, cabinetry and electrical components for residential use.
More Info
Home Saunas - a break down of all your choices to install a sauna