Compact Models For Auxiliary Heating! Compact Electric and Point of Use Electric Water Heaters Reliance Compact Electrics are built for "Point-of-Use" applications where you need auxiliary hot water in a compact package. They’re ideal for vacation homes and remote fixtures where you need extra heat in a hurry. Our smallest 2.5 gallon unit is just 14 1/2" high, so it installs easily in tight quarters. The 6-2SSUS-K model is backed by a six-year tank warranty and a one year parts warranty. Our 6 gallon through 30 gallon Compact units are backed by a 6 year tank warranty and a 6 year parts warranty. Back to electric water heaters