Eccotemp 3" Stainless Steel Vertical Vent Kit with 2.5" Adapter - 1779610954851_554

Eccotemp 3" Stainless Steel Vertical Vent Kit with 2.5" Adapter - 1779610954851_554

3" Single walled Vertical Stainless Steel Vent Kit with 2.5" to 3" Paloma Adapter for i12 and FVi12 Series Tankless Water Heaters. You may need to purchase additional Eccotemp straight pipe.

Eccotemp's special gas vent kits are all made of AL-294C stainless steel and are Category II/III and UL compliant.

All orders totaling $75 or above will be shipped with SIGNATURE REQUIRED. If you wish to remove the SIGNATURE REQUIRED from your shipment please contact Customer Service. Please Note: By opting out of SIGNATURE REQUIRED, you release Eccotemp from all liability of lost or stolen packages. Call 1-866-356-1992 or chat with us speak with a customer service agent.

Includes

• (1) 3" Adjustable Roof Flashing
• (1) 3" Universal Adapter
• (1) 3" Rain Cap
• (1) 3" x 6" Back Flow Protection
• (1) 3" Top Support/Storm Collar
  
• (1) 3" Vertical Drain Pipe
• (1) 2.5" to 3" Paloma Adapter

What our Experts Think

• Critical venting component for indoor tankless installs: The Eccotemp 3" Stainless Steel Vertical Vent Kit with 2.5" Adapter (SKU: 1779610954851_554) is a complete exhaust system designed to safely remove combustion gases from compatible indoor tankless water heaters.
• Built for indoor Builder/SmartHome/i12-style units: Designed for indoor natural gas or propane tankless systems that require 2.5" to 3" conversion, making it essential for proper installation and code compliance.
• Full vertical vent system included: Comes with all key components such as roof flashing, rain cap, storm collar, support, drain pipe, and adapter, reducing the need for separate purchases.
• Stainless steel construction (AL-294C grade): Built from corrosion-resistant stainless steel and rated for Category II/III venting applications, designed for long-term durability in high-heat exhaust environments.
• Adapter flexibility included: Includes a 2.5" to 3" Paloma-style adapter, allowing compatibility with smaller outlet flue systems commonly used in Eccotemp indoor units.

Q&A

Q: What is this Eccotemp vent kit?
A: It is a 3-inch stainless steel vertical venting system designed for indoor tankless water heaters, allowing safe exhaust of combustion gases through a roof installation. It includes a 2.5" to 3" adapter for compatible Eccotemp units.

Q: What is it used for?
A: It is used to vent indoor natural gas or propane tankless water heaters vertically through the roof, ensuring safe removal of exhaust gases and proper airflow for combustion systems.

Q: What material is it made of?
A: It is made from AL-294C stainless steel, designed for durability, corrosion resistance, and long-term high-temperature venting use. 

Q: Is it for horizontal installation?
A: No. This specific kit is designed for vertical (roof) venting only, not wall or side-exit installations.

Q: Why is a vent kit necessary?
A: It ensures safe operation of gas water heaters by properly exhausting combustion gases outdoors, maintaining efficiency and meeting safety standards.

Maintenance Tips

• Inspect vent joints regularly to ensure tight seals and prevent exhaust gas leaks
• Check for corrosion or rust on stainless sections, especially at roof penetration points
• Clear debris, nests, or blockages from vent termination cap for safe airflow
• Verify proper slope & vertical alignment to avoid condensate pooling in the vent pipe
• Inspect gaskets and adapters (3” to 2.5”) for wear, cracking, or loosening over time
• Ensure secure roof flashing & weather sealing to prevent water intrusion
• Clean exterior termination annually for optimal exhaust flow
• Check for condensation buildup in cold weather and ensure proper drainage design
• Re-tighten brackets/supports periodically to maintain structural stability
• Annual professional inspection recommended for vent safety and compliance