Understanding Gas Vents: Types and Best Practices

Technology Green Technology and Sustainability

Gas vents are crucial for the safe and efficient operation of gas appliances. There are different types of vents designed for specific purposes, and it's important to understand their features and best practices for installation and maintenance.

Types of Gas Vents

⭐See vent is an old type of vent made of galvanized pipe with a single wall and 6 inches clearance to combustibles.

⭐B vent is a gas vent specifically designed for gas appliances, with a luminal liner inside and galvanized and aluminum layers.

⭐B vent can be used as a vent to go through a roof.

⭐B vents with double walls are used in furnaces to prevent rusting.

⭐Different types of vents, such as PVC and ABS, are used for high efficiency furnaces.

Best Practices for Gas Venting

🔥As the efficiency of furnaces increases, less heat is produced in the vent pipe, making it difficult to use masonry chimneys.

🔥Using exterior chimneys for venting is illegal.

🔥Some areas require the use of PVC on steroids (636) for venting.

🔥Vent temperatures for high efficiency furnaces are lower than older models.

FAQ

What are the main differences between See vent and B vent?

See vent is an old type of vent made of galvanized pipe with a single wall, while B vent is specifically designed for gas appliances with a luminal liner inside and galvanized and aluminum layers.

Can B vent be used for venting through a roof?

Yes, B vent can be used as a vent to go through a roof.

Why are exterior chimneys for venting illegal?

Using exterior chimneys for venting is illegal due to safety and regulatory reasons.

What type of vents are used for high efficiency furnaces?

Different types of vents, such as PVC and ABS, are used for high efficiency furnaces.

How do vent temperatures for high efficiency furnaces compare to older models?

Vent temperatures for high efficiency furnaces are lower than older models due to increased efficiency.

Summary with Timestamps

🔥 0:24The video discusses different types of venting used over the years, including see vent and B vent, for gas appliances.

🔥 3:47The video discusses condensing water out of gas vent gasses and the use of B vents in furnaces for preventing rust.

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