At the heart of a hydronic heating system is the circulator pump. ... Want Hot Water Fast? Switch to ... Measured in gallons per minute (GPM), the flow rate of a pump refers to the maximum volume of water it can circulate at a given head range.
This Old House plumbing and heating expert Richard Trethewey delivers hot water on demand.
Replacing a standard hot water circulating pump with a Chilipepper hot water demand pump is easy to do and will save you a tremendous amount of energy ...