Condensation or water dripping from the exhaust vent of the Takagi water heater.

Safety first: Turn OFF power and gas if you suspect venting problems. Condensate in the vent can lead to corrosion and leakage of flue gases.

Steps:

• 1. Inspect vent slope: Verify that horizontal vent sections are sloped per Takagi instructions (typically back toward the heater or toward a drain, depending on model).
• 2. Check for condensate drain: On condensing models, ensure a condensate drain kit is installed where required and that the drain line is not blocked.
• 3. Vent material: Confirm that vent piping is of the correct type (e.g., Category III stainless or approved plastic for condensing models). Replace non-approved materials.
• 4. Professional correction: Venting modifications should be performed by a qualified installer familiar with Takagi requirements.