The manufacturer’s power-vent water heaters come with a push-button remote control that allows home buyers to adjust temperatures and monitor operations on an LCD display. Available with 40- and 50-gallon gas-fired units, the wired remote has an automatic “scald warning” and “service needed” indicator. It also displays available hot water levels. Cost: $1,050 to $1,700. Rheem Manufacturing Co. 800-621-5622. www.rheem.com.