Proper condensate drain location
11/27/2017 at 7:48:17 AM
Is it wise/proper to tap into the drain for a kitchen sink to drain the condensate from a furnace? I ask because it seems like it is common for a kitchen sink drain to become plugged. This would cause the water to back up into the pump or even into the sink which could potentially overflow and cause water damage.
11/27/2017 at 11:04:20 AM
It is ok to run the condensate to your kitchen sink. In my experience there is usually a better location. That said as long as the condensation is tied in upstream of the trap it will work and should be fine.
11/28/2017 at 10:47:18 AM
This is unusual to do so I am not sure why this would have to be done, but if so the drain pipe should be 2 inches NOT 1 1/2 as is common.
Most cases the furnace condensate is located at the floor drain by use of a 1/2 inch flexible hose or straight plastic pipe, usually this drain is close to the furnace, or in the case of a sump pump use that to drain.
"On a side note"; kitchen sinks require maintenance as they do tend to collect residue ( grease solids and other slow moving particles). From time to time is is a good practice to use a drain cleaning product that is suitable to your location in the case of Septic tanks there are good products.
11/28/2017 at 11:08:48 AM
Technically as long as the connection is above the trap you can do it. But as others have stated there could be issues with grease and drain maintenance.
Personally have been called into repair these installations where someone tied into the main plumbing stack.
So I would not suggest doing this. Tie it to a floor drain.
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