Replaced old leaking water heater. Water pressure was previously at 100 psi. Replaced PRV and set to 70 psi. Tested to ensure proper function and a leak free installation. Vent appeared to be back drafting out of vent hood on water heater. All visible venting had pitch. Vent is connected to hvac system and is going into chimney stack. Recommended homeowner have a licensed hvac company come inspect the chimney to see if a chimney liner was ever installed in the home.
