PROIII-140 Pro Series III generator

$3,253best price, at The Steam Store · 13 sellers, up to $4,790Save $1,537 vs the highest price

steam generator

Shop at The Steam Store Compare similar All 13 sellers

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

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The price ledger

Same product, 13 sellers, $1,537 apart

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

01The Steam StoreBest price · in stock$3,253View
02Finnish Sauna Builders$100 more than the best price · in stock$3,353View
03Steam Sauna Supply$100 more than the best price · in stock$3,353View
04Art of Steam Co$100 more than the best price · in stock$3,353View
05Shop Mr. Steam$100 more than the best price · in stock$3,353View
06Cottage Spas$100 more than the best price · in stock$3,353View
07Peak Primal Wellness$100 more than the best price · in stock$3,353View
08Premium Saunas$100 more than the best price · in stock$3,353View
09SaunaHeaters.com$100 more than the best price · in stock$3,353View
10The Sauna Place$100 more than the best price · in stock$3,353View
11Empire Saunas$1,106 more than the best price$4,359View
12American Sauna Store$1,202 more than the best price · in stock$4,455View
13US Bath Store$1,537 more than the best price$4,790View

Compare across brands

How it stacks up

	This oneThermaSol PROIII-140 Pro Series III generator	SteamistSM Plus Series 10kW Steam Shower Generator	AmerecAK Series 11 kW Steam Shower Generator	Mr. SteamR12C10AI0000 MS 12kW generator	EliteSteam15kW Steam Generator Kit
Lowest price	$3,253	$3,325	$3,335	$3,450	$3,020Lowest
Sold by	13 sellers, up to $4,790	Bio Wellness Collection only	Empire Saunas only	3 sellers, up to $4,673	EliteSteam.com only
Steam generator	8 kW	10 kW	11 kW	12 kW	Not listed
Room size	140 cubic feet	Not listed	175 cu ft	Not listed	Not listed
Warranty	Lifetime Warranty	Not listed	Not listed	limited lifetime warranty	Not listed
	Every seller	Compare it	Compare it	Compare it	Compare it

The details

PROIII-140 Pro Series III generator

Rated output of 8 kW
Needs a 240V circuit
Made from stainless steel
Sized for rooms up to 140 cu ft
Lifetime warranty listed

Voltage: 240V
Circuit: 37 A
Room volume: 140 cubic feet
Warranty: Lifetime Warranty
Wood / material: stainless steel
Certifications: for US and Canadian residential safety
Steam generator: 8 kW

Options

Control: Generator Only (No Control), MicroTouch Control, SignaTouch Control, ThermaTouch2 7" (Black Trim), ThermaTouch2 10", ThermaTouch2 15"
Package Tier: Generator Only, Control Kit, Digital Shower Package, Serenity Wellness Steam Package, HydroVive 14 Wellness Steam Package, HydroVive 18 Wellness Steam Package, Serenity Wellness Shower Package, HydroVive 14 Wellness Shower Package, HydroVive 18 Wellness Shower Package, Serenity Total Wellness Package, HydroVive 14 Total Wellness Package, HydroVive 18 Total Wellness Package
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.