Mike Lamb Posted February 27, 2017 Report Share Posted February 27, 2017 This is the hottest I have ever measured tap water. 152 F. Click to Enlarge 28.08 KB Click to Enlarge 56.71 KB Link to comment Share on other sites More sharing options...
Trent Tarter Posted February 28, 2017 Report Share Posted February 28, 2017 I have seen a few around 170+. I find it common for real old water heaters to have defective thermostats that cause high temps. Link to comment Share on other sites More sharing options...
Jim Katen Posted February 28, 2017 Report Share Posted February 28, 2017 This is the hottest I have ever measured tap water. 152 F. Click to Enlarge 28.08 KB Click to Enlarge 56.71 KB That's a really inaccurate way to measure water temperature. Link to comment Share on other sites More sharing options...
Rob Amaral Posted February 28, 2017 Report Share Posted February 28, 2017 Had an internal tankless-coil in a steam boiler up here kick-out 200 F once.. Relo inspection... lady was home... with a small kid.. "I told her and notated it'.. Link to comment Share on other sites More sharing options...
Jim Baird Posted February 28, 2017 Report Share Posted February 28, 2017 This is the hottest I have ever measured tap water. 152 F. Click to Enlarge 28.08 KB Click to Enlarge 56.71 KB That's a really inaccurate way to measure water temperature. And a better way is...? Link to comment Share on other sites More sharing options...
Marc Posted February 28, 2017 Report Share Posted February 28, 2017 This is the hottest I have ever measured tap water. 152 F. Click to Enlarge 28.08 KB Click to Enlarge 56.71 KB That's a really inaccurate way to measure water temperature. And a better way is...? Thermocouple. You can buy them as accessories to plug into your multimeter. I ditched my IR thermometer several years ago in favor of a thermocouple accessory for that reason. Marc Link to comment Share on other sites More sharing options...
Jerry Simon Posted February 28, 2017 Report Share Posted February 28, 2017 And a better way is...? A meat thermometer. Same thing I use to check AC temp split. Link to comment Share on other sites More sharing options...
Tom Raymond Posted February 28, 2017 Report Share Posted February 28, 2017 This is the hottest I have ever measured tap water. 152 F. Click to Enlarge 28.08 KB Click to Enlarge 56.71 KB That's a really inaccurate way to measure water temperature. It is, but used this way will tend to read low. Link to comment Share on other sites More sharing options...
Mike Lamb Posted February 28, 2017 Author Report Share Posted February 28, 2017 I test water temp with my hand. If I can't hold it under the tap for more than 1 or 2 seconds it's too hot. The laser thermometer is mostly eye candy like my cheap thermal imaging camera. It shows a picture of what I already know. The accurate temp is not important to me. Link to comment Share on other sites More sharing options...
Jerry Simon Posted February 28, 2017 Report Share Posted February 28, 2017 I test water temp with my hand. If I can't hold it under the tap for more than 1 or 2 seconds it's too hot. Your chart shows a third degree burn can occur in 1-2 seconds if water temps are between 148 and 155 degrees. I'd never risk testing water temps that way. Link to comment Share on other sites More sharing options...
Mike Lamb Posted February 28, 2017 Author Report Share Posted February 28, 2017 I test water temp with my hand. If I can't hold it under the tap for more than 1 or 2 seconds it's too hot. Your chart shows a third degree burn can occur in 1-2 seconds if water temps are between 148 and 155 degrees. I'd never risk testing water temps that way. If I were you I wouldn't risk it either. The elderly and young children have a much slower reaction time. Link to comment Share on other sites More sharing options...
Jerry Simon Posted February 28, 2017 Report Share Posted February 28, 2017 I test water temp with my hand. If I can't hold it under the tap for more than 1 or 2 seconds it's too hot. Your chart shows a third degree burn can occur in 1-2 seconds if water temps are between 148 and 155 degrees. I'd never risk testing water temps that way. If I were you I wouldn't risk it either. The elderly and young children have a much slower reaction time. Stupid is as stupid does. . . Link to comment Share on other sites More sharing options...
Marc Posted February 28, 2017 Report Share Posted February 28, 2017 I test water temp with my hand. If I can't hold it under the tap for more than 1 or 2 seconds it's too hot. Your chart shows a third degree burn can occur in 1-2 seconds if water temps are between 148 and 155 degrees. I'd never risk testing water temps that way. If I were you I wouldn't risk it either. The elderly and young children have a much slower reaction time. Water that hot makes steam. Don't need to touch it, just look. Lotsa stuff we find just by looking. Marc Link to comment Share on other sites More sharing options...
Jim Katen Posted February 28, 2017 Report Share Posted February 28, 2017 And a better way is...? An HVAC thermometer. Attach it to a small spring clamp. Let the water run while you do other stuff and glance at it every now and then. Not only will this allow you to see the peak temperature, but you will also see the temperature curve - making is really easy to spot broken dip tubes. Click to Enlarge 36.12 KB Link to comment Share on other sites More sharing options...
Jim Katen Posted February 28, 2017 Report Share Posted February 28, 2017 Example. Download Attachment: Test.pdf 221.9 KB Link to comment Share on other sites More sharing options...
Marc Posted February 28, 2017 Report Share Posted February 28, 2017 Example. Download Attachment: Test.pdf 221.9?KB That's really cool. Marc Link to comment Share on other sites More sharing options...
Chad Fabry Posted February 28, 2017 Report Share Posted February 28, 2017 I test water temp with my hand. If I can't hold it under the tap for more than 1 or 2 seconds it's too hot. Your chart shows a third degree burn can occur in 1-2 seconds if water temps are between 148 and 155 degrees. I'd never risk testing water temps that way. If I were you I wouldn't risk it either. The elderly and young children have a much slower reaction time. [:-thumbu] Link to comment Share on other sites More sharing options...
Mike Lamb Posted March 1, 2017 Author Report Share Posted March 1, 2017 Example. Download Attachment: Test.pdf 221.9?KB That's really cool. Marc I assume clunking from the tank is another sign of a broken dip tube or sacrificial anode. Link to comment Share on other sites More sharing options...
Jim Katen Posted March 1, 2017 Report Share Posted March 1, 2017 I assume clunking from the tank is another sign of a broken dip tube or sacrificial anode. Dip tubes and anodes don't make any noise. The clunking happens when minerals build up in the tank and form scale. The scale holds small pockets of water at the bottom of the tank where they heat up really fast and actually boil. You're hearing the water turn into bubbles of steam. Link to comment Share on other sites More sharing options...
Rob Amaral Posted March 1, 2017 Report Share Posted March 1, 2017 I use a typical "Taylor" brand HVAC thermometer in a cup... run the water a while... etc.. serviceable... Link to comment Share on other sites More sharing options...
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