Originally Posted By: gbeaumont
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Hi to all,
Now I know, that this is going to be concidered by some to be beyond the scope of a home inspector but I personally section every furnace that I look at, there is no other way in most cases to find a cracked heat exchanger. frankley taking it apart is not the issue, it's welding up the cracks and putting it back together that's the problem, especially when you still have a hand full of components left over and the listing agent has a worried look on their face. ![icon_wink.gif](upload://ssT9V5t45yjlgXqiFRXL04eXtqw.gif)
This is a 1993 Goodman forced hot air by gas (and it's upside down). ![icon_lol.gif](upload://zEgbBCXRskkCTwEux7Bi20ZySza.gif) kinda the proctologists view ![icon_confused.gif](upload://qv5zppiN69qCk2Y6JzaFYhrff8S.gif) ![icon_confused.gif](upload://qv5zppiN69qCk2Y6JzaFYhrff8S.gif) ![icon_confused.gif](upload://qv5zppiN69qCk2Y6JzaFYhrff8S.gif)
this is the patient being prep'd for surgery !!
this is the view of the heat exchanger
This is the gas manifold, and burner assembley
This is a view into the exchanger showing rust and debris.
Finally I have pulled the exchanger (this took several 6-packs) notice the rust and debris again, and that was not the problem ![icon_exclaim.gif](upload://kW92MliyHA8ygoXI0UsgtBSn4ZO.gif)
this is a pre-sawzall shot of the complete exchanger (hint: look into the airspace between the pannels)
this is a pic (after seperating the units) of one of the elements. Notice the loss of metal around the 'pressed in rivets" (for want of a better word !!)
and here is a close up of one of the "holes" every pannel had about the same issue.
here is a more typical exchanger crack, note the area where the pressing is swaged out for the manifold:
OK, so why did this fail after only 11 years ??
talk about it amongst yourselves, my nurse had just arrived to give me my medication, and put me back in that nice jacket with the long arms that do up at the back, so I don't hurt myself !!!!
Next week I plan to do a show and tell on the subject of Salisbury Massachusetts nuclear plant, (But I need new sawzall blades first !!!)
Gerry (get a life) Beaumont