Seisco Tankless Water Heaters

Seisco is yet another Houston-based tankless water heaters developer and retailer with 30 years of experience in the field. Their products are focused more on the quality of operation rather than the looks, and while the units could be accommodated in better casings, they are proven to be working well nonetheless. Seisco is guaranteeing just that by offering a 10-year limited warranty on all of its residential products, and a 5-Year limited warranty on all the commercial products.