Low water pressure, hot only, kitchen only

barberpilot

The hot water in the kitchen sink at our old farm house is very, low. Any ideas? We have replaced the faucet a few times in the past and think this may have started sometime after the last change. We have cleared the lines with air, but are at a loss...

DexterII

Galvanized pipe? If so, needs to be replaced.

bob22

Is the flow out of the spout the same with cold and hot? If reduced for both, check aerator for gunk.
Otherwise, likely as Dexter said.

Homerepairguy

Do you have a single handle faucet or two separate hot and cold faucets?

barberpilot

Yes, some of the basement pipe is galvanized......we thought of that, just haven't gone there yet!

barberpilot

Yes, it is a single handle faucet for both hot and cold, and I have checked a replaced the aerator.
The dishwasher and back porch sink are on the same line and the hot water to them does not seem to be affected in them. The pipes between the back porch, dishwasher, and kitchen aren't the old galvanized. (have been replaced in the last 10 years)

Homerepairguy

Had a thought. Maybe turn the hot water valve under the sink off. Then disconnect the hot water line from the shut off valve and connect a flex line to the valve. Direct the flex line into a bucket and turn the valve on. If the flow is good, then the problem is in your faucet. If the flow is slow then the problem is in your pipes.

HRG

plumber666

Could be the sink shutoff valve, too. They collect debris like crazy. I've got a toilet that takes 10 minutes for the tank to fill and that's the problem.