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Old 10-08-2008, 12:35 PM   #1
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water leaking from underneath the furnace


The basement AC unit is leaking water, but it's working fine. Is it something I could fix, my wife suggested we call a repair man.

please help
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Old 10-08-2008, 12:51 PM   #2
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water leaking from underneath the furnace


My guess is that this is condensate. If it is pumped to the outside then maybe the pump is toast.

It could be that the condensate tubing is plugged in either the gravity drain or the pump setup.

You should be able to see the condensate tubing somewhere and find out where it goes and track down the problem from there.
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Old 10-08-2008, 02:50 PM   #3
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water leaking from underneath the furnace


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The basement AC unit is leaking water, but it's working fine. Is it something I could fix, my wife suggested we call a repair man.

please help
Your ptrap is probably clogged.

Try to remove the fittings by hand, assuming all the fittings were just hand tightened.

If not removable by hand, then shut off the AC and cut the pipes and clean them out. Make sure you have replacement pvc pipes and fittings on hand before you do this though.
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Old 10-08-2008, 07:15 PM   #4
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water leaking from underneath the furnace


Go to the end of the end of the drain and locate the opening. Blow cmpressed air thru it.

Or you may have a hole in your drain pan. Or it could be off level.
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Old 10-08-2008, 08:21 PM   #5
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water leaking from underneath the furnace


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Go to the end of the end of the drain and locate the opening. Blow cmpressed air thru it.

Or you may have a hole in your drain pan. Or it could be off level.
What good is blowing compressed air back towards the AC unit when it will reclog again? That buildup needs to be removed.
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Old 10-08-2008, 08:25 PM   #6
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water leaking from underneath the furnace


And you have what level of hvac liicense.....?
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Old 10-09-2008, 08:39 AM   #7
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water leaking from underneath the furnace


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And you have what level of hvac liicense.....?
Common sense dude.

Take care of the problem the right way, or you will be redoing your work sooner or later.
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Old 10-09-2008, 02:48 PM   #8
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Common sense dude.

Take care of the problem the right way, or you will be redoing your work sooner or later.

Not about common sense it's about what works.

A tech would use NO2 or CO2 in a tank. Back blast it and the clog is reduced to a watery viscose that settles in the drain pan and is washed away with condensate, or with the evap covered removeed by pouring water to rinse the drain pan.

Practical experience trumps common sense
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Old 10-10-2008, 01:32 AM   #9
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water leaking from underneath the furnace


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Not about common sense it's about what works.

A tech would use NO2 or CO2 in a tank. Back blast it and the clog is reduced to a watery viscose that settles in the drain pan and is washed away with condensate, or with the evap covered removeed by pouring water to rinse the drain pan.

Piratical experience trumps common sense
That's a contractor's solution to charging a customer for an issue that can be resolved easier by just removing the trap and cleaning it by the homeowner.

No need to hire an hvac contractor to do a 10 minute job while sitting in the van for another 50 min sleeping.
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Old 10-10-2008, 10:27 AM   #10
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water leaking from underneath the furnace


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That's a contractor's solution to charging a customer for an issue that can be resolved easier by just removing the trap and cleaning it by the homeowner.

No need to hire an hvac contractor to do a 10 minute job while sitting in the van for another 50 min sleeping.

You got it all wrong.

You took issue with the compressed air solution I proposed, so i gave an example of how a regular tech would do it carrying a bottle off CO2 and how it would be handled.

I don't know of many home owners who carry around CO2, but there are several who have access to an air compressor. And using the the steps out lined the drain can be cleared.

And just for the record a tech would flush the the drain pan with a disinfectant to retard mold growth. Customer can use diluted bleach to do the same.

There's doing it then, then there is doing it right.


After that we take a nap.
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Old 10-10-2008, 11:42 AM   #11
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water leaking from underneath the furnace


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You got it all wrong.

You took issue with the compressed air solution I proposed, so i gave an example of how a regular tech would do it carrying a bottle off CO2 and how it would be handled.

I don't know of many home owners who carry around CO2, but there are several who have access to an air compressor. And using the the steps out lined the drain can be cleared.

And just for the record a tech would flush the the drain pan with a disinfectant to retard mold growth. Customer can use diluted bleach to do the same.

There's doing it then, then there id doing it right.


After that we take a nap.
So clearly, it was irrelevant for you to ask about my level of HVAC license.


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And you have what level of hvac liicense.....?
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Old 10-10-2008, 12:16 PM   #12
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water leaking from underneath the furnace


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So clearly, it was irrelevant for you to ask about my level of HVAC license.

No it was not. You failed to address the rinsing of the pan. Most clogs do not occur in a trap. Around here traps are pretty much not used.

The main thing is to make sure the evap drain stub is completely clear of mold/slime and scum. Just clearing the trap with out checking the drain stub, you could leave behind a partial blockage. Rinsing the pan will remove the partial plug and using a bottle brush or toilet paper wrapped around some stiff wire will make doubly sure the clog is clear at the drain stub point..

When you asked about it reclogging I got the impression you have no HVAC lic cause that drain cleaing procedure is on every State HVAC TEST I know of and all you addressed was the trap as a potential clog point..

Was not intended to dis you.
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