I have take line loose a couple times to blow it out but the condensation keeps coming back and causing the pilot light to go out...it does stay lit for a while after I clear the condensation...maybe a day or so

  • 2
    Actually likely not condensation in the usual sense but water vapor from the gas burning. But either way, that is a problem. How old is the water heater? What model? – manassehkatz-Moving 2 Codidact Jun 20 '18 at 15:39
  • Please post pictures of the heater label, and model. – Bryce Jun 20 '18 at 17:46
  • It does not have a thermocouple it is a thermopile – Rhenson Jun 20 '18 at 20:17
  • Model number is n40t61-343 whirlpool 40 gallon – Rhenson Jun 20 '18 at 20:17

To me it sounds like you need a drip leg. A drip leg is usually installed after the local shutoff valve it is a simple T with a 6" or longer nipple that is capped pointing down. With a drip leg the moisture and some rust fall into the nipple, I have had a home that I had to clean the drip leg every year, others never needed cleaning 1 drop of water in your gas valve or pilot is enough to cause problems and a 6" drip leg is usually enough for most homes.

  • Great answer. About drip leg. A pic would help here. – user101687 Jun 9 '19 at 15:24

The condensation likely appears after the flame goes out. Burning of gas produces water.

Every few years with a gas water heater it's necessary to replace the thermocouple. The thermocouple is heated by the gas flame which produces a small electrical signal. If that signal is lost the heater goes out.

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  • I think it has a thermopile and not a thermocouple...if that is correct way to say it – Rhenson Jun 20 '18 at 19:42

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