When selecting a venting setup for a side-vented water heater, clave choices focus on safety, compatibility, and installation ease. This guide highlights five Amazon-listed vent termination and hood kits ideal for side-vented or horizontal venting configurations. It targets homeowners upgrading or replacing vent components, contractors seeking reliable hardware, and DIYers who want clear installation guidance. The top picks emphasize compatibility with 2- to 4-inch vents, sturdy materials, and straightforward installation. Below, you’ll find a quick comparison and practical buying advice to help you choose the right kit for your system.
| Product | Best For | Key Benefit | Notes |
|---|---|---|---|
| Rheem AS40665 ProTech Vent Hood Draft Hood | Homeowners with 3″ or 4″ venting | Flexible venting compatibility | Draft hood aids exhaust management |
| SP20285 Horizontal Vent Termination Kit (2 in.) | Outside-wall installations | Low-profile aesthetic, includes all hardware | For 2-inch PVC/ABS pipes |
| Rheem RTG20280-1 Tankless Horizontal Vent Termination Kit | Durable, long-term installs | Stainless steel components, complete wall plate | Includes 94° elbow |
| Thermomate 3″ Vent Pipe Kit | Universal 3″ venting | All-in-one package | Includes termination hood and elbows |
| SP20285 Horizontal Vent Termination Kit With Screws | Concealed exterior piping | Aesthetically hides intake/exhaust | Includes screws; compatible with 2″ pipes |
Rheem AS40665 ProTech Vent Hood Draft Hood
The Rheem AS40665 ProTech Vent Hood is designed to connect a water heater to a vertical or near-horizontal venting system. It supports 3-inch and 4-inch venting configurations, making it adaptable for different installation constraints. This option is best for homeowners who want a single, versatile vent hood that can accommodate varying vent sizes without sacrificing exhaust control. It’s especially suitable for retrofits where existing vent pathways require a flexible component.
Best for: Homeowners upgrading to a versatile vent hood that fits both 3″ and 4″ venting systems. Choose this if you need a single hood that can be used across multiple installation scenarios.
Caution: Ensure your vent system matches the hood’s compatibility (3″ or 4″); misalignment may affect exhaust performance.
SP20285 Horizontal Vent Termination Kit for Tankless Gas Water Heater (2 in.)
The SP20285 kit is designed to vent high-efficiency fossil-fuel appliances and is focused on horizontal installations through exterior walls. It emphasizes a neat exterior appearance by concealing intake and exhaust piping. It’s best for installations where exterior aesthetics matter and where 2-inch PVC or ABS pipe is used. This kit is a solid choice for outside-wall configurations with a compact footprint.
Best for: Exterior-wall installations needing a low-profile, all-in-one vent termination solution for 2″ pipes.
Caution: Confirm pipe size and installation orientation before purchasing; not suitable for non-2″ pipe systems.
Rheem RTG20280-1 Tankless Horizontal Vent Termination Kit
This kit highlights durable stainless steel components and includes a full wall plate assembly with mounting screws and a 94-degree elbow. It is well suited for longer runs or installations requiring a robust, corrosion-resistant solution. The included wall plate simplifies mounting and helps reduce installation time.
Best for: Long-lasting, corrosion-resistant vent terminations with comprehensive mounting hardware for secure installation.
Caution: Ensure compatibility with your existing vent size and verify wall clearance for the included plate and elbow.
Thermomate 3″ Vent Pipe Kit
The Thermomate 3″ Vent Pipe Kit is crafted for universal fit with most standard 3-inch gas water heaters. It provides a complete package including termination hood, 90-degree elbow, vent pipes, and a wall thimble. This kit emphasizes reliable horizontal venting for residential tankless water heaters, contributing to safer indoor venting and easier installation.
Best for: Replacements or new installations needing a full, universal 3″ venting kit with all essential components.
Caution: Verify that your heater uses a 3″ vent to avoid misfit and ensure proper seal integrity with all included parts.
SP20285 Horizontal Vent Termination Kit With Screws (2 in.)
This kit is designed to vent high-efficiency fossil-fuel appliances and includes screws for a straightforward, hassle-free installation. It emphasizes concealing both intake and exhaust pipework to improve exterior aesthetics. It’s best for those seeking a complete kit that minimizes the need for additional hardware. The kit is intended for 2″ pipe systems.
Best for: Exterior installations needing a complete kit with screws for a clean, concealed vent setup.
Caution: Confirm that your system uses 2″ pipes, and be aware of center-to-center measurements for proper fit in your wall opening.
Buying Guide: Venting For Side-Vented Water Heaters
What should you consider when choosing a vent termination or draft hood for a side-vented water heater?
- Vent size compatibility: Most kitchen and bathroom gas water heaters use 2″ or 3″ pipes, while some configurations support 4″. Pick a kit that matches your vent size to ensure a secure seal and proper exhaust flow.
- Installation orientation: Horizontal versus vertical venting requires different components (elbows, wall thimbles, and termination plates). Confirm whether your setup is through-wall or through-roof and select accordingly.
- Material and durability: Stainless steel components resist corrosion and last longer in harsh outdoor or garage environments. Consider kits with corrosion-resistant materials for long-term performance.
- All-in-one versus modular: All-in-one kits simplify installation; modular kits offer flexibility for future upgrades. Choose based on your comfort level and project complexity.
- Aesthetics and exterior finish: For exterior-wall installations, concealed piping improves curb appeal. Look for low-profile housings or covers that blend with your siding.
- Safety and compliance: Ensure that the kit supports safe exhaust management and aligns with your local codes for venting high-efficiency gas appliances.
Frequently Asked Questions
- What is a vent termination kit used for? It seals and channels exhaust and intake air for gas-powered water heaters, improving safety and efficiency.
- Can I mix vent sizes (2″ with 3″ or 4″)? Mixing sizes is generally not recommended; use a kit designed for your specific vent size to maintain proper airflow and exhaust integrity.
- Is a stainless steel termination kit better? Yes, stainless steel components resist corrosion and often offer greater durability in outdoor or humid environments.
- Do these kits include all necessary hardware? Many listings show included elbows, wall plates, and screws, but always verify contents before purchase.
- Can I install these myself? Installation routes vary by kit and venting setup. Follow included instructions and local codes; consult a professional if unsure.
- Will a low-profile vent hood affect performance? If properly matched to your vent size, a low-profile hood should not compromise exhaust flow and can improve exterior aesthetics.