clogged DHW coil

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Alan R. Mercurio_3
Alan R. Mercurio_3 Posts: 1,624
in THE MAIN WALL
Acid treatment by a professional and only after it’s determined that mineral build up is the cause.

Your friend in the industry,
Alan R. Mercurio

<A HREF="http://www.heatinghelp.com/getListed.cfm?id=408&Step=30">To Learn More About This Professional, Click Here to Visit Their Ad in "Find A Professional"</A>

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Comments

  • jim_43
    jim_43 Posts: 8
    clogged DHW coil

    Whats the best way to clean out a coil that barely trickles water out of the hot outlet, will compressed air work or do I stand a chance of pitting the coil
  • bruce_21
    bruce_21 Posts: 246


    And then test your water hardness to determine if you need a softener to prevent this happening again and again.
  • nugs
    nugs Posts: 77


    Better than half the time, the acid will reveal pin holes in the coil and you will end up wasting the money on the treatment and having to buy another coil. Better, no way better to ditch the coil and have an indirect installed. In the short run, it will give you plenty of hot water and cut your oil bill at the same time because the boiler will not have to run at 160 or more all year round just to make hot water. While you are at it you may as well have a boiler reset control installed and save even more bucks.
  • oil-2-4-6-gas
    oil-2-4-6-gas Posts: 641


    you need a new coil ---and you need a water softener --no matter what you use to make your hot water --YOU WILL still have the issue of lime,calcium build-up --whether its a plate exchanger,coil in boiler or indirect you will still get a fouled exchanger -----either you will end up with no pressure or no heat exchange ----you NEED to deal with your water quality
  • bob young
    bob young Posts: 2,177


    Put in a gas -fired water heater & call it a day
  • Alan R. Mercurio_3
    Alan R. Mercurio_3 Posts: 1,624


    Amen, and some great advice! :)

    Your friend in the industry,
    Alan R. Mercurio

    To Learn More About This Professional, Click Here to Visit Their Ad in "Find A Professional"

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  • Alan R. Mercurio_3
    Alan R. Mercurio_3 Posts: 1,624


    Good point and great advice!

    Your friend in the industry,
    Alan R. Mercurio

    To Learn More About This Professional, Click Here to Visit Their Ad in "Find A Professional"

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  • Alan R. Mercurio_3
    Alan R. Mercurio_3 Posts: 1,624


    Thank God Gas fired water heaters are immune to mineral build up ;-)

    Your friend in the industry,
    Alan R. Mercurio

    To Learn More About This Professional, Click Here to Visit Their Ad in "Find A Professional"

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  • billtwocase_8
    billtwocase_8 Posts: 3
    Are you sure?

    Might be a screw head, or solder in a flow restrictor at the coil inlet. If it is the coil, have it replaced. Also consider a whole house water filter/softener system. peace
  • Darin Cook_9
    Darin Cook_9 Posts: 45
    A safe way to clean your coil

    I have used a product called Rydlyme to clean heat exchangers on indirects. It will will make the inside of the coil look like brand new. It is non-toxic. You can even dump it down the drain - legally - it is that safe to use. It is about $100.00 for a five gallon container.

    Darin
  • M grallert
    M grallert Posts: 19


    you won't block an indirect with anything because it will contain only boiler water(dead) water.any "stuff" in the domestic will end up at the bottom of the tank to be drained off every so often.
    Peace
    Matthew
  • oil-2-4-6-gas
    oil-2-4-6-gas Posts: 641


    > you won't block an indirect with anything because

    > it will contain only boiler water(dead) water.any

    > "stuff" in the domestic will end up at the bottom

    > of the tank to be drained off every so

    > often. Peace Matthew




    BUT YOU WILL CLOG THE FINS ON THE HEAT EXCHANGER--reducing your heat transfer
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