Comfort PM Auto residential circulating pumps from Grundfos Pumps have an AUTOADAPT function that learns the household’s consumption patterns and then adapts to it. When using the mode, average runtimes are three hours per day. The single-phase, 115-volt pump motor yields up to 6.5 gpm and uses two temperature sensors; one within the pump and another connected by a cable installed in the hot-water flow pipe. The variable-speed electronically commutated motor-based circulator uses an integrated logic algorithm to learn the varying energy-usage patterns of an application over time, enabling the software to automatically determine the lowest possible operating-efficiency point to meet demand. 800/921-7867; www.grundfos.us.