To circulate the hot water in the system piping, systems use one or more small pumps. These pumps are low maintenance items and are usually installed in pairs, with one operating and one in the backup mode Borough Park Plumbing and Heating are high maintenance, they cannot be ignored. Most pump failures are caused by bad designs, improper installations, insufficient bearing lubrication, improper alignment, and damaged seals.
        
Hot water recirculation systems deliver hot water to fixtures quickly without waiting for the water to get hot. Rather than relying on low water pressure common in most water lines, re-circulating systems use a pump to rapidly move water from a water heater to the fixtures.
         
Hot water recirculation systems can be activated by the push of a button, or by a thermostat, timer or motion sensor. Systems that use a thermostat or timer automatically turn on the pump whenever water temperature drops below a set-point, or when the timer reaches a setting.