K Thermo-Hose: Thermostatically controlled. Solid brass couplings. High quality, double walled 5/8" PVC hose. Automatically shuts off when weather is warmer. Eliminates need to drain water from hose between uses. Not intended to be connected permanently to hose bib â leave power cord connected.6' power cord. Use with: hot tubs, kennels, pond/water gardens, stock tanks and more.2-year limited warranty.