UKU Extension Box for Heaters over 12kW

Name: HUUM UKU Extension Box for Heaters over 12kW
Brand: HUUM

$773best price, at American Sauna Store · 6 sellers, up to $773

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

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Same product, 6 sellers

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

Compare across brands

	This oneHUUM UKU Extension Box for Heaters over 12kW	HarviaKIP Series Sauna Heater Package, Built-In Controls, Stainless Steel	Polar SaunaQuality sauna heater 6 kW - 240V 1-phase	FinlandiaFIN S Series Sauna Heater 8kW, 6kW, 4.5kW, 3kW	GeyserSteamStandard Electric Sauna Heater (4.5 kw - 9kw)
Lowest price	$773	$754	$748Lowest	$815	$850
Sold by	6 sellers, up to $773	31 sellers, up to $1,393	SaunaStore.com only	The Home Upgrade only	Geyser Steam only
Power	12 kW	3 kW	Not listed	8.0 kW	3 kW
Room size	Not listed	up to 130 cu ft	Not listed	up to 425 cu ft	Not listed
Voltage	240V	208V/240V	Not listed	208V/240V	220V/240V
Warranty	5-Year Warranty; 5-year limited warranty	2-Year Warranty (Consumer Use)	Not listed	limited lifetime warranty	Not listed
	Every seller	Compare it	Compare it	Compare it	Compare it