Always meet the minimum applicable mechanical, plumbing, electrical and other code requirements when installing a water heating system. Initial installation improvements include installing a second anode rod and replacement drain valve. Water heater placement can impact to operating cost and especially if the unit is poorly insulated. Unit placement to facilitate shorts, insulated piping runs to bathrooms and kitchens is most effective. the energy efficiency to storage type water heater are best located in well conditioned space and except in extremely hot climate where tank heated loss increases the cooling load. water heater maintenance can significantly extend water heater life and minimize loss of efficiency time. Routine maintenance involve flushing a quart of water from the storage tank every two or three months, checking the temperature and pressure relief valve every six months, and inspecting to anode rod every three to four years. For Shopping Buy Water Heater Online today.