The Honeywell PC3F2699IUF00/U 3 Speed Hydronic Circulating Pump Features an In-line, Wet Rotor Circulator with Universal Flange that is Designed for Applications in Closed-Loop Hydronic Heating and Cooling Systems, as well as in Solar Systems. The Pump is Non-Submersible and for use in Dry, Frost-Free, Well-Ventilated Installations. Resideo is in association with Honeywell Home.