How does a hot tension washer function? WELCOME › Forums › General Chat and Networking › How does a hot tension washer function? This topic has 0 replies, 1 voice, and was last updated 2 years, 2 months ago by KayKelly. Viewing 1 post (of 1 total) Author Posts September 9, 2022 at 9:53 am #2746 KayKellyParticipant Both hot and cold water pressure washers have a siphon that compresses the water and shoots it out at high strain. However, a hot pressure washer goes through a heater that warms the water before it has chance out of the machine. Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In