Hot water pressure is low while cold water pressure is normal

Safety first: Turn OFF power if you will be opening the heater or working on internal plumbing.

Steps:

• 1. Check faucets: Remove and clean aerators and showerheads to remove debris.
• 2. Verify valves: Ensure the hot water outlet valve at the heater is fully open.
• 3. Inspect outlet filter (if equipped): Clean any mesh screens on the hot outlet.
• 4. Descale heat exchanger: For tankless models, perform a descaling flush to remove internal restrictions.

Result: Restoring full flow should improve hot water pressure.