Forum Discussion

SnugBugs's avatar
SnugBugs
Explorer
Jan 10, 2014

Sulfur Smell from Water Heater - Please Help!

So, we are getting our 2006 Winnebago Outlook 326A ready for an extended journey, and are encountering the sulfur smell coming out of the water heater (apparently caused by bacteria proliferating in water left in the heater while it was stored...yay!). We have already done a bleach flush of the heater (dump old water from heater through drain, add dilute of bleach to fresh tank, run hot taps until bleach water fills heater, wait overnight, blow out heater water through heater drain, flush whole system with fresh water), and though it did take the stank down from a 10 to about a 3, it's still there. We have a camphost position starting in 2 weeks and need to have hot water! Can anyone assist us who can offer advice we can count on? We don't have time to experiment, unfortunately, we just need it fixed.

Water heater is an Atwood.

Thank you, O great ones, please share your wisdom with us newbies so we may not stink of old eggs...
  • Old-Biscuit's avatar
    Old-Biscuit
    Explorer III
    Jan 10, 2014
    IF the bleach treatment didn't get rid of the sulfur smell then you will need to do a vinegar soak.


    FLUSHING YOUR WATER HEATER TO REMOVE
    THE ROTTEN EGG ODOR
    1. Turn off your main water supply. Drain you water heater tank. Reinstall drain plug. Remove the pressure-temperature relief valve. With a funnel use 4 parts white vinegar to two parts water. (In a 6 gallon tank that would be 4 gallons vinegar to 2 gallons water).
    2. Cycle the water heater, letting it run under normal operation 4-5 times. At no time do you remove the vinegar from the tank or open any faucets.
    This will take time cause WH has to cool down then refire repeat for 4-5 times.
    3. Once this has been completed, remove the drain plug and drain the
    water heater.
    4. Flush/rinse water heater thoroughly with a wand thru drain hole stirring up any sediment. Then turn on water supply and force flush out drain hole.
    5. Turn off water, install drain plug, then turn water back on and open PRV letting water flush out thru it.
    6. Let PRV snap close, open faucets hot side one at a time to flush lines

    No more stink of old rotten eggs.

About Technical Issues

Having RV issues? Connect with others who have been in your shoes.24,190 PostsLatest Activity: Jan 24, 2025