Which ozone sauna should I buy: the Standard, Deluxe or Red Light model?

Match the model to who will sit in it and how often. Across the range our saunas take users up to about 2 m (6 ft 5 in) tall, and all three carry 12 micron far infrared.

Standard ozone sauna — three modalities in one: ozone, steam and 12 micron far infrared. 1180 mm high, 680 mm wide (1360 mm open), 1200 mm long, 80 kg. 1500 W element, four seat levels, four castors, improved heat distribution under the feet, digital display with 10 ozone levels, users up to 120 kg.

Deluxe ozone sauna — the same three modalities with more room: 1150 mm high, 680 mm wide (1360 mm open), 1400 mm long, 100 kg, five seat levels, a 4.3-inch colour TFT display, users up to 180 kg (about 397 lb). That is 200 mm more length and a 60 kg higher limit than the Standard. For a clinic taking all-comers, the 180 kg limit usually decides it.

Red Light ozone sauna — our flagship, and a different machine rather than a larger Deluxe. Seven modalities in one: ozone, steam, far infrared at 12,000 nm — the same 12 micron rating in another unit — near infrared at 850 nanometres (nm) from a full-body-length LED array, and visible red, blue and green light. The spectrum runs from 460 nm to 12,000 nm, with no ultraviolet emission. Its full specification and current price live on the Red Light product page, and a separate answer here covers what it adds.

All three run at 47 ppm at 2 l/min from a 500 mg/h generator — an ambient concentration measured across the whole air volume of the sauna, explained in its own answer. All include a medical oxygen concentrator, come with the applicable plug for your country, and need no plumbing. Current pricing for each model is on its product page.