Install Double-Walled Vent Pipe
5:28
9:08
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At 5:28 in
Helping My Neighbor Install a 50-Gal Rheem Gas Water Heater
What happens here
Install the double-walled vent pipe, which is crucial for safely expelling exhaust gases. The original setup had a 4-inch vent, but a 3-inch double-walled pipe is required by code. An adapter (4x3 adapter) is used to connect the new 3-inch vent to the existing 4-inch vent connection point in the ceiling. Secure the vent pipe segments together and to the water heater's exhaust port using self-tapping screws and seal all seams with aluminum tape to prevent leaks. The bend in the vent pipe should be smooth to maintain proper airflow.
Goal: Safely install the exhaust vent system for the gas water heater.
Tools and materials
- 4x3 Adapter — Connecting the 3-inch vent pipe to a 4-inch existing connection
- Aluminum Tape — Sealing vent pipe seams
- Double-Walled Vent Pipe — Expelling exhaust gases from the water heater
- Drill / Impact Driver Milwaukee — Driving screws into the vent pipe
- Self-Tapping Screws — Securing vent pipe segments