Eccotemp 3" Stainless Steel Horizontal Vent Kit - 1779612072658_456

Eccotemp 3" Stainless Steel Horizontal Vent Kit - 1779612072658_456

The 3" Single-walled, Stainless Steel Horizontal Vent Kit is for horizontal installations only.

You may need to purchase additional straight pipe. You will need to determine how many additional feet you will need and determine if you need a condensation drain. Also remember there is a maximum vent run of 20 feet, subtracting 4 feet for every 90-degree elbow in the run.

The 3" single walled Horizontal Stainless Steel Vent Kit does NOT include the Eccotemp 2.5" to 3" Paloma Adapter that is needed for the FVI12 & i12 models. Adapter can be found . This vent kit is compatible with the Eccotemp 20HI Series, SHLX Series, SH12-A Series, 6GB Builder Series, and 6.5GB Builder Series Tankless Water Heaters.

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" x 12" Straight Pipe
• (1) 3" x 90 Degree Elbow
• (1) 3" Adjustable Wall Thimble
• (1) 3” x 6" Universal Adapter
• (1) 3" Termination Hood w/Damper

What our Experts Think  

• Complete horizontal venting solution for tankless systems — The Eccotemp 3" Stainless Steel Horizontal Vent Kit (1779612072658_456) is designed for safe exhaust routing from indoor gas tankless water heaters through an exterior wall, ensuring proper airflow and combustion gas removal.
• Durable stainless steel construction — Built from AL-294C stainless steel, it is engineered for high-temperature, corrosive exhaust gases commonly produced by natural gas tankless units.
• All-in-one installation kit — Includes key components such as straight pipe, 90° elbow, wall thimble, universal adapter, and termination hood with damper, reducing the need for separate vent parts.
• Designed for horizontal wall venting only — Specifically intended for side-wall exhaust configurations, making it suitable for homes where roof venting is not practical.
• Compatibility-focused design — Works with select Eccotemp indoor tankless series (including SH12-A, 6GB Builder Series, SHLX, and 20HI systems), ensuring correct airflow and safe operation when matched properly.
• Engineered for safe, code-compliant exhaust — UL-approved Category II/III venting system designed to handle condensation and maintain safe separation between exhaust and exterior environment.
• Expandable system design — May require additional straight pipe or accessories depending on installation distance and layout, allowing flexible setup for different home configurations.
• Best for: homeowners installing an indoor Eccotemp tankless water heater that requires horizontal wall venting with a complete, manufacturer-matched kit

                 
Q&A      

Q: What is the Eccotemp 3" Horizontal Vent Kit?
A: It is the V3HVK 3-inch stainless steel horizontal vent kit, designed to safely exhaust combustion gases from compatible indoor Eccotemp tankless water heaters through a side wall installation.

Q: What is it used for?
A: It is used for horizontal (side-wall) venting only, directing flue gases from indoor gas tankless units to the outside safely and efficiently. 

Q: What material is it made of?
A: It is made from AL-294C stainless steel, designed for corrosion resistance and high-temperature exhaust handling in gas appliances. 

Q: Is this for vertical venting?
A: No. This kit is strictly for horizontal (side-wall) venting only, not roof or vertical installations.

Q: Do I need additional parts?
A: Yes. Most installations require extra straight pipe sections depending on wall thickness and vent run length, and sometimes a condensation drain or adapter depending on the heater model.

Q: What is the maximum vent length?
A: Typical maximum horizontal vent run is about 20 feet, with reductions for each 90° elbow used in the system.

             
Maintenance Tips