Full spectrum means near, mid and far infrared wavelengths rather than far alone. That is what the term denotes; it is not a claim about outcome. Twenty-four of the 26 cabins here carry it in the manufacturer's own model name, and only some publish which emitters produce which band — so ask if the split matters to you.
The 26 here
$2,699 to $9,999, median $4,847, which sits above far-infrared-only cabins starting at $1,999. Golden Designs supplies 10, Dynamic Saunas 8, Finnmark 4 and Maxxus 3.
How it compares
The narrower alternative is far infrared, where every published maximum is 140°F and the entry price is lower. Full spectrum cabins add emitters rather than replacing them, so they cost more and draw more power. Whether the extra wavelengths justify the difference is a judgement we are not going to make for you. For what the competition publishes about wavelengths and EMF, and where they put it, see our reviews of Sun Home and Clearlight.
Delivery
Free shipping to the lower 48, no minimum, and it stops at the curb — the crate is left at the end of your driveway. Getting it inside is a $600 white-glove upgrade. Getting it inside and assembled is $1,800, which covers everything except electrical work: we recommend you hire a local electrician for that, because the wiring has to meet your local code and pass local inspection. Service fees are non-refundable: if the sauna goes back, the installation does not.
