For a space saving booster water heater, the Hatco - C-36-240-3 - 240V 36 kW Compact Booster Heater measures just 18 inches wide, 24 inches deep, and 18 inches high. The C-36-240-3 has a six-gallon capacity, fiberglass insulation, a quick access transformer, and swing away front panels. With a stainless steel front panel and powder coated body, the Hatco 240V 36 kW Compact Booster Heater (C-36-240-3) is factory pre-plumbed and pre-wired with a high-temperature limit switch and calibrated immersi...