CA
5" - 6" B-VENT INCREASER Metal Venting
+5% Tax • Shipping calculated at checkout.
U.S. Duties/Taxes, if applicable, may be due at time of delivery.
Pickup available at 75 Blue Mountain St #3
Usually ready in 24 hours
Not sure this fits your furnace? Call us — we're happy to help
This professional-grade 5" to 6" B-Vent Increaser is a critical component for safe and efficient gas appliance venting. Designed to transition an exhaust system from a 5-inch diameter pipe to a larger 6-inch diameter pipe, this metal adapter ensures proper drafting for Category I natural gas or liquid propane appliances. It is commonly used in HVAC installations to maintain code-compliant airflow for high-capacity exhaust systems. Built with durable, corrosion-resistant materials, this increaser provides a secure fit and long-lasting performance, preventing the leakage of combustion gases into the living space. Whether you are upgrading a furnace or installing a high-recovery water heater, this B-vent transition is essential for a reliable venting configuration.
Our team is happy to help you verify compatibility before you order. We'll confirm it fits your specific furnace model.
1-778-759-9864Mon–Sat 8AM–9PM PST · Or email parts@bcfurnace.com
Compatible parts and related replacements
Yes, the 638-152 is a genuine OEM, or a factory replacement manufacturer approved part. We source all Metal Venting from authorized distributors to ensure exact-fit compatibility. This Metal Venting is backed by our 100% compatibility guarantee — if it doesn't fit your furnace, we'll make it right.
The easiest way is to match the part number (638-152) with your furnace model number. Visit the homepage and enter your model number in the search bar — our system will show all compatible Metal Venting for your specific unit. You can also call our technicians at 1-778-759-9864 for free compatibility verification.
Most Metal Venting including the 638-152 ship within 1–2 business days from our warehouse. We ship across Canada and the United States, and worldwide, with tracking on every order. For urgent furnace repairs, contact us at 1-778-759-9864 for expedited shipping options.
Yes! Local pickup is available at our Coquitlam, BC location: 75 Blue Mountain St #3. Metal Venting orders are usually ready within 24 hours. Call us at 1-778-759-9864 to confirm the 638-152 is in stock before visiting.
Still not sure this is the right part? Call 1-778-759-9864 and we will check your model number with you.
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