Hello again,

Well, we forgot to call the furnace cleaning guy last year, so this year the man said we have a buildup of sludge in the line (the filter even had to be pried from the housing). He said the pump is running at vacuum and the line should be replaced.

So I want to get some tips on replacement. My plan is to shut off the valve at the tank and remove the filter. Then start the furnace and let it run until the line is clear and the furnace shuts off. Then replace the line and reinstall the filter, open the valve at the tank, and bleed the pump and reset it to get it running again.

Thoughts? Concerns? I just had it all cleaned this week, should I have them come again after I replace the line or clean the strainer and replace the nozzle myself after? Adjustments needed to compensate for the added flow?

Thanks! -Dave

Your idea sounds reasonable. When done fire it over and see how it does. If problems happen call them back.

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Originally Posted by hvac1000

Your idea sounds reasonable. When done fire it over and see how it does. If problems happen call them back.

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Thanks hvac1000, I hope it goes smoothly...

One last thing, do you think I would have any success blowing the line out with my compressor? It would save a big headache, as long is it does not create another.

It all depends upon how much gunk is stuck to the pipe walls. You might be better served circulation a cleaner for a hour or so through the line but I have never personally done that so I would not know how to advise.