Invigoration K-5539-NA 18kW generator

Name: Kohler Invigoration K-5539-NA 18kW generator
Brand: Kohler

$5,316best price, at US Bath Store

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

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Compare across brands

	This oneKohler Invigoration K-5539-NA 18kW generator	Mr. SteamMX-R MAX 24kW Steam Shower Generator	AmerecAK22 - 22KW Steam Generator 650 - 900 Cubic Ft (2 - 11KW Generators)	ThermaSolPRO Series III 750 Steam Generator (20kW)	DeltaSteamScape 15kW Steam Generator 5GE-SMP15
Lowest price	$5,316	$5,320	$5,175	$5,562	$5,044Lowest
Sold by	US Bath Store only	9 sellers, up to $7,600	Sauna Kit Co only	3 sellers, up to $5,562	Empire Saunas only
Steam generator	18000 W	24 kW	11 kW	20 kW	15000 W
Room size	1-550 (CU. FT.)	679 cu ft	up to 550 cu ft	up to 750 cu ft	675 cu ft
Warranty	3 Year Limited Warranty	Lifetime Warranty; limited lifetime warranty	Not listed	on the tank	limited lifetime warranty
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