PROIII-575 Pro Series III generator

$4,536best price, at Finnish Sauna Builders · 13 sellers, up to $6,480Save $1,944 vs the highest price

steam generator

Shop at Finnish Sauna Builders Compare similar All 13 sellers

Prices checked Sep 29, 2026. Freight, wiring and a pad usually add more; the cost calculator totals them.

We may earn a commission if you buy through our links, at no extra cost to you, and a fee when you request quotes through our builder partners.

The price ledger

Same product, 13 sellers, $1,944 apart

Cheapest first. Prices checked Sep 29, 2026; confirm freight and what's included before you buy.

01Finnish Sauna BuildersBest price · in stock$4,536View
02Steam Sauna SupplySame as the best price · in stock$4,536View
03Art of Steam CoSame as the best price · in stock$4,536View
04Shop Mr. SteamSame as the best price · in stock$4,536View
05The Steam StoreSame as the best price · in stock$4,536View
06Cottage SpasSame as the best price · in stock$4,536View
07Peak Primal WellnessSame as the best price · in stock$4,536View
08Premium SaunasSame as the best price · in stock$4,536View
09SaunaHeaters.comSame as the best price · in stock$4,536View
10The Sauna PlaceSame as the best price · in stock$4,536View
11Empire Saunas$1,361 more than the best price$5,897View
12American Sauna Store$1,489 more than the best price · in stock$6,025View
13US Bath Store$1,944 more than the best price$6,480View

Compare across brands

How it stacks up

	This oneThermaSol PROIII-575 Pro Series III generator	SteamistTotalSense Series 15kW Steam Shower Generator	Mr. SteamMS MAX Series 20KW Steam Shower Generator	AmerecAK18 - 18KW Steam Generator 500 700 Cubic Ft (2 - 9KW Generators)	KohlerInvigoration 15kW Steam Generator
Lowest price	$4,536	$4,625	$4,690	$4,824	$4,238Lowest
Sold by	13 sellers, up to $6,480	Bio Wellness Collection only	3 sellers, up to $5,093	Sauna Kit Co only	3 sellers, up to $4,238
Steam generator	15 kW	15 kW	20 kW	11 kW	15 kW
Room size	up to 575 cu ft	Not listed	Not listed	up to 550 cu ft	Not listed
	Every seller	Compare it	Compare it	Compare it	Compare it

The details

PROIII-575 Pro Series III generator

Rated output of 15 kW
Needs a 240V circuit
Made from stainless steel
Sized for rooms up to 575 cu ft

Certifications: for US and Canadian residential safety
Warranty: on the tank
Steam generator: 15 kW
Voltage: 240V
Room volume: up to 575 cu ft
Wood / material: stainless steel

Options

Control: Generator Only (No Control), MicroTouch Control, SignaTouch Control, ThermaTouch2 7" (Black Trim), ThermaTouch2 10", ThermaTouch2 15"
Package Tier: Tier 1 — Generator Only, Tier 2 — Control Kit (Control + Steam Head), Tier 3 — Digital Shower Package, Tier 4 — Wellness Steam Package (Serenity Rainhead), Tier 4 — Wellness Steam Package (HydroVive 14 Rainhead), Tier 4 — Wellness Steam Package (HydroVive 18 Rainhead), Tier 5 — Wellness Shower Package (Serenity Rainhead), Tier 5 — Wellness Shower Package (HydroVive 14 Rainhead), Tier 5 — Wellness Shower Package (HydroVive 18 Rainhead), Tier 6 — Total Wellness Package (Serenity Rainhead), Tier 6 — Total Wellness Package (HydroVive 14 Rainhead), Tier 6 — Total Wellness Package (HydroVive 18 Rainhead)
Finish: —, Antique Brass — Round Steam Head, Antique Copper — Round Steam Head, Antique Nickel — Round Steam Head, Black Nickel — Round Steam Head, Copper — Round Steam Head, Matte Black — Round Steam Head, Oil Rubbed Bronze — Round Steam Head, Polished Brass — Round Steam Head, Polished Chrome — Round Steam Head, Polished Gold — Round Steam Head, Polished Nickel — Round Steam Head, Satin Brass — Round Steam Head, Satin Chrome — Round Steam Head, Satin Nickel — Round Steam Head, White — Round Steam Head, Antique Brass — Square Steam Head, Antique Copper — Square Steam Head, Antique Nickel — Square Steam Head, Black Nickel — Square Steam Head, Copper — Square Steam Head, Matte Black — Square Steam Head, Oil Rubbed Bronze — Square Steam Head, Polished Brass — Square Steam Head, Polished Chrome — Square Steam Head, Polished Gold — Square Steam Head, Polished Nickel — Square Steam Head, Satin Brass — Square Steam Head, Satin Chrome — Square Steam Head, Satin Nickel — Square Steam Head, White — Square Steam Head, Antique Brass, Antique Copper, Antique Nickel, Black Nickel, Copper, Matte Black, Oil Rubbed Bronze, Polished Brass, Polished Chrome, Polished Gold, Polished Nickel, Satin Brass, Satin Chrome, Satin Nickel, White, Antique Brass — Round Rainhead, Antique Copper — Round Rainhead, Antique Nickel — Round Rainhead, Black Nickel — Round Rainhead, Copper — Round Rainhead, Matte Black — Round Rainhead, Oil Rubbed Bronze — Round Rainhead, Polished Brass — Round Rainhead, Polished Chrome — Round Rainhead, Polished Gold — Round Rainhead, Polished Nickel — Round Rainhead, Satin Brass — Round Rainhead, Satin Chrome — Round Rainhead, Satin Nickel — Round Rainhead, White — Round Rainhead, Antique Brass — Square Rainhead, Antique Copper — Square Rainhead, Antique Nickel — Square Rainhead, Black Nickel — Square Rainhead, Copper — Square Rainhead, Matte Black — Square Rainhead, Oil Rubbed Bronze — Square Rainhead, Polished Brass — Square Rainhead, Polished Chrome — Square Rainhead, Polished Gold — Square Rainhead, Polished Nickel — Square Rainhead, Satin Brass — Square Rainhead, Satin Chrome — Square Rainhead, Satin Nickel — Square Rainhead, White — Square Rainhead

From the sellers’ own product listings, checked 2026-10-01. Confirm specs with the seller before you buy.