Comfort System series and Alpha CS/HWR series by Grundfos are domestic hot water recirculation system pumps, designed to provide instant hot water at plumbing fixtures such as sinks, showers and bathtubs, while simultaneously eliminating the waste of cold water.
Available in two main types: for plumbing systems without a dedicated return line (models including Comfort Valve) and for systems with a dedicated return line (all others).
