Hi Everyone,

I'm what my friends might call a handyman, jack of all trades, which might be a blessing, downfall, or BOTH.

Anyway, I've rigged up the plumbing in my new kitchen. The garden hose pipe is just on the exterior wall behind my kitchen sink, so the previous owners had copper coming from the cold pipe, teeing off to the sink and outside.

After we finished the basement, the contractor replaced the copper with pex, so now I've done a bit of work under the sink to be able to get both hot AND cold out to the garden hose.

Can anyone tell me why I might be getting condensation on the cold pipe? I've made sure to turn off the hot water and let it settle to room temp, but I still get condensation on the cold... Pic below to explain setup. Thanks everyone...

I'm aware of the general causes of condensation on cold water pipes. I'm actual curious to see if anyone sees a fault in my setup, with the exception of the cold/hot water leading to the same pipe (will be either hot or cold at once, not both).

Thanks a million!

Very rare for pex to sweat. Humidity would have to be really high. New painting and dry walling will bump up the humidity levels,especially in a basement.

Is the entire cold run of pex condensating when the outdoor faucet is used or just the pipe to the exterior?

Why did you cross link the supplies? Car washing?

You are getting condensation from the plex going to the outside hose bib, get rid of this, differences in temperature from the outside wall will transfer the condensation to the inside due to the heat differential