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Seisco Tankless Water Heaters

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Seisco International Limited manufactures commercial and residential tankless electric water heaters. The company is headquartered in Houston, Texas.

Corporate History

In 1986, Microtherm, Inc. introduced the Seisco line of tankless water heaters as the first "whole-house" tankless water heater. In 2007, the company changed its name to Seisco International Limited, apparently renaming itself after its water heaters.  (Technically, Seisco International Limited acquired Microtherm and its line of Seisco water heaters.)

Product Lines

Along with their tankless water heaters, Seisco offers the Supercharger, which can be used with both a storage tank or tankless water heater. The supercharger maintains a constant temperature within 1.5 degrees to prevent scalding and will help extend tank water heaters by providing hot water after a storage tank has been exhausted. 

Seisco heaters are manufactured in Houston, Texas, with final assembly and packaging in Mexico, qualifying them as a "Buy American" product.

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Contacting Seisco

Seisco International Limited
241 Airtex Drive
Houston, TX 77090

Phone: 888-296-9293

Warranty

Seisco offers a 10-year limited warranty on all their residential products and a 5-year limited warranty on all commercial products.



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