how much electricity does a hot water recirculating pump use?
The cost of the electricity at $0.12 per kW for the small pump for 250 feet of pipe on a timer for eight hours a day with a sensor and switch that runs on average 3 minutes per hour and costs $1.40 to $1.59 a year in electricity. The . 79-A circulator uses 90 W and costs $4.73 a year.