We just installed a new hot water heater, it sits in a room next to the bathroom, with the kitchen one room away. We have pressure in all faucets hot and cold, except the kitchen. We have pressure on the cold side, took all connections apart down to the shut off valve and checked pressure, it was good. When the hose is not connected to the under side of the hot faucet, and we turn on the hot water shut off, we only get a small stream coming out of the hose. We have checked under the house, no leaks. And suggestions?
You have a debris blockage in the hot water shut-off valve at that sink most likely.
Turn the water completely off to the water heater, dismantle the hot water valve, put a towel over it and have someone turn the water on very briefly to try to flush it out.