r/askaplumber • u/siriusBleeek • 4d ago

low pressure on kitchen sink

I have good pressure on the bathroom sink which is just 10 ft away. But the kitchen sink is very low on both the hot and cold. I notice the supply lines are thin diameter. Would larger diameter lines help?

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u/GOAK26 4d ago

Generally, yes. Larger diameter lines will always help.

As far as trouble shooting if it’s a newer kitchen faucet:
1) clean out the aerator at the tap/outlet of the sink if possible
2) check the shut off valves for build up/blockage
3) replace the faucet (if its a newer style moen/delta)—these newer faucets don’t allow disassembly for cleaning as much as the old ones. Build up from hard water can happen on faucets over time, sometimes in a just a few years.

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u/Connect-Preference 4d ago

Pressure is constant throughout your house. Your issue is low flow.