The global hot water circulating pump market was valued at USD 19,014.0 million in 2016, which is expected to reach USD 22,083.3 million by 2021 with the CAGR of 3.14%. Moreover, in terms of volume, in 2016, the global consumption of hot water circulator pump was 37.80 million units, which is expected to reach 42.07 million units by 2021, with the CAGR of 2.26%.