Get to know two of Grundfos’s most popular circulator pumps, the UPS26-99FC 3-Speed and UP15-42F Circulator Pumps! Specifically designed for heating and cooling systems, these pumps are built to get the job done, day in and day out. The UP15-42F is better suited for closed loop heating applications (radiant heating, baseboards, fan coils, etc.) while the UPS26-99FC’s 3 speeds give it a wider array of applications (radiant, hydronic, radiators, fan coils, and more). Watch the videos below to learn more!