A 5-gallon pressure tank means the motor does not restart every time a tap opens - it cuts in below 20 PSI and out above 40 PSI, which is easier on the pump and quieter in a utility room. The 1200 W permanent magnet motor draws water from 26 ft down, moves up to 1000 GPH and lifts to 164 ft. A cast iron casing and tank resist corrosion, with a bottom retainer that stops the unit walking under load. Thermal overload protection cuts power if it jams. Discharge is 1 in NPT on 120 V/60 Hz. It measures 18 x 10.5 x 19 in and weighs 26 lbs.