Finnmark Designs

Six Finnmark units, $4,695 to $9,320, median $7,145. Five are saunas and one is a cold/hot plunge, and four of the six are full spectrum by the manufacturer's own model name.

The range is narrow on purpose

FD-1 through FD-5 is a single ladder: one person up to a five-person Trinity XL, with the FD-4 and FD-5 pairing infrared with steam in one cabin. Four name a standard 120V supply, which is unusual at this price and means most of the range plugs in rather than needing a circuit run. Confirm it on the model you want, because the larger combos are the likelier exception.

Infrared and steam in one cabin

The Trinity models do both, which is a genuinely different proposition from a dry cabin: you get dry heat to 140°F or humidity, from the same box, on the same footprint. They cost more than a single-mode cabin of the same size and they ask more of the room — humidity needs somewhere to go. Compare against full spectrum before deciding the second mode is worth it.

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.