Question about Weber Genesis Silver B Grill

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Converting Weber Genesis Silver B from LP to Natural Gas

Does anyone know if this is possible? I've seen conversion kits for other bbq's; never anything that says you can do this with a Weber. The bbq in question is about 10 years old. By the way, I cannot believe how great the condition of the bbq is after 10 years of use. The outside looks brand new, only when you lift the lid do you see it's been well used. Go Weber!

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  • Joanne McKinnon
    Joanne McKinnon Oct 12, 2012

    Great was one we had been thinking of since the grill was pretty old we decided to bite the bullet and get a new NG grill. It is not the same as my Weber but I am hanging onto that one in case we move somewhere else and are allowed to have propane at the condo.



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Hello...I have the same grill and want to do the same conversion...From my research, you need to drill out the three orifices with a size #53 wire gauge drill bit. ( this resizes each orifice to 12000 BTU's each, which the grill is rated at 36000 BTU's).Then remove the existing hose and regulator. Replace the hose with a Quick disconnect compression fitted hose. The NG supply needs to have a pressure regulator installed, with a shutoff and quick disconnect fitting installed. Connect the hoes from the grill to the supply, and fire it up...THIS IS WHAT I INTEND ON DOING TO MY GRILL,BUT YOU DO THIS AT YOUR OWN RISK>>>

Posted on Jun 29, 2009

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  • dgrego3
    dgrego3 May 28, 2012

    the above is correct except the internal valve is sized for propane and will not operate properly just cause you drilled out the orifice. You need to find someone who is converting NG to LP and swap valves.. Then the problem you may have is the valve stem on the LP is taller than the NG value so you may have to shim the Q so the knobs meet the value stem.. Or swap the entire manifold LP for NG

  • Adrian Oct 06, 2013

    I just did my Silver B all I did was change the orifi drilled to 1/16 bought a hose from Home Depot, hooked it up checked for leaks and presto. No more bottles. I kept my original orifi in case I wanted to revert. Biggest issue is finding orifi. Cheers

  • Eric Earle
    Eric Earle Jan 08, 2014

    I've done it, the valves are the same, the only difference is the orifice size. Federal law and product liability have everyone afraid to do the simplest things anymore. Look online for gas orifice size charts for your but application. Americans have gone from rugged pioneers to scared little rabbits.


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I have a Genesis, drilled out the 3 orifices to 1/16, got rid of the regulator, the regulator on your house will be your regulator and replace hose with a NG hose, you can use a dryer gas hose or what have,,worked first time...never have to get propane again

Posted on Nov 05, 2011

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Or you could buy the guts for the natural gas model of the genesis silver B and just swap them

Posted on Oct 10, 2012

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DON'T DO THIS YOURSELF! It regures a new regulator and the burner orifice needs to be drilled out. YOU have no idea what size to drill the orifice out to and you don't have the right tools, because a burner orifice drill kit is $120 (just the drill bits). A tank of propane is $12, why convert it in the first place? You might save $3 per year. I realize the tank weighs 48 lbs., full, but how far do you have to carry it? Please bring the grill to a BBQ retailer that provides service and let thme do this, if you must.

Posted on May 08, 2009

  • abdiver Jan 23, 2011

    A lot of people should not do this, BUT I am not one of them! A tank of propane is $15 dollars here and I got thru 12 year and it Does double my cost verses nature gas. Not counting the convenience!

  • coriheart
    coriheart Jul 14, 2012

    IF you are the least bit handy, this is a totally doable job. Listen to rwgnj52. You can use a 1/16 bit, but the #53 is the right size for the job. I know many people who have done this and it works fine. IF you are the least bit sketchy about doing it, DON'T. Take it to a retailer (or buy a new Q). As always, you are responsible for any damage you do to yourself or your home.


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When going to NG, you lose the regulator. Also, you need to check the size of the orifices, ng sizes can be obtained from weber. Orifices should screw in on most bbqs. You should also not use the lowest setting on the burners as with ng it will prob be too low. NOTE: All orifices need to be altered, including rotisserie and side burners (if applicable)

Posted on Aug 26, 2014

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