We have been experiencing reduced water pressure on the hot side, affecting all faucets. Cold is fine. I have flushed the water heater and confirmed good pressure going in there and on the whole cold side. I tried using a small air compressor to blow air back through the system with the water heater drain open, but still have the problem. When I initially open a hot-water faucet, the pressure seems okay for a few seconds and then begins to slow down.
The water heater does not have disconnects - only the shutoff valve for the incoming cold water.
Any thoughts?