Thermo 2000’s mini ULTRA electric boilers are ideal for all hydronic heating needs in single-family homes and condominiums. Compact design. Ultra-silent. Easy to install on a wall. That’s what minis are all about! But they are truly big on performance. These residential electric boilers waste no energy and do not produce any combustion or GHG emissions. They are a highly energy efficient and green alternative. The addition of a ;T2 UltraSmart^TM controller helps to increase the overall system performance. Thermo 2000’s mini ULTRAs are covered by a 15-year warranty on the reservoir, and 2-year warranty on electrical and mechanical parts.