How to Set the Right Temperature for Tankless Water Heaters
Call 281-302-6710. Does your tankless water heater suddenly cut out on you? You’re in the shower and suddenly your warm water is replaced by cold water! It could be caused by the temperature setting of your tankless water heater. Master Plumber Bryan Graham explains why and how to fix it in this video.
Graham Plumbing Services is A+ rated by the Houston Better Business Bureau and serves customers in Sugar Land, Missouri City, Katy and all around the Houston area.
This is a summary of Bryan’s video.
Sometimes people call in because their tankless water heater keeps cutting on and off. Most of the time we find that when we go out there that the water heater is set too hot.
So a lot of people crank it up as high as they can get, and they’ll get it up to 140. Well, the tankless water heater has a flow switch in that water heater, and if you’ve got it all the way… it’s got a flow switch in the water heater, and you’ve gotta have so much flow going through that water heater for that water heater to kick on.
Well if you’ve got it cranked all the way upto a 140 degrees, when you go to mix the water in your shower, if you’re taking a shower, you’re mixing too much cold water in there, and you’re getting a low flow coming into that water heater. So to fix that you can drop that water heater down to, you know, really you’re supposed to have it at 120, but I know a lot of people like hotter water. If you keep it at around 130, that’s as hot as you’ll ever need for a shower. The 140 is more for a commercial. And then, you’ll actually mix more hot water in when you’re talking a shower, creating enough flow to kick that water heater on.