For homeowners seeking streamlined installation and tidy exterior walls, a low-profile concentric vent kit is the answer. These kits combine intake and exhaust pipes in a single, compact footprint, helping reduce wall intrusion and simplify setups for high-efficiency furnaces and water heaters. The top picks below are best for DIY-friendly installs, retrofit projects, and spaces with limited wall thickness. The buyer should consider wall thickness, compatibility with existing equipment, and regional venting codes when choosing.
| Product | Best For | Key Benefit |
|---|---|---|
| Rheem Concentric Vent Kit – 2 in. | Standard residential water heaters | OEM authentic part; simple install |
| DiversiTech CVENT-3, 3-Inch Concentric Kit | High-efficiency furnaces and tankless heaters | Dual-pipe configuration; low profile |
| Dakota Sourcing 22153, 3-Inch PVC Concentric Vent Termination Kit | Horizontal or vertical venting projects | One-hole installation; saves time |
| DiversiTech HVENT2, 2-Inch Horizontal Vent Termination Kit | Horizontal vent terminations | Conceals intake and exhaust; tidy look |
| Rheem ProTech Concentric RTG20274A, 3″/5″ | Direct replacement on compatible Rheem/Ruud units | Wall thickness up to 5 inches; versatile |
Rheem Concentric Vent Kit – 2 in.
Best for standard single-family homes with Rheem water heaters. Features include OEM genuine factory authorization, which supports straightforward replacement in systems designed around factory parts. The kit’s compact profile helps minimize exterior footprint on typical 2-inch vent openings. A potential limitation is regional restrictions; this model notes non-approval for certain states, so confirm local code compatibility before purchase. This kit is suited for buyers prioritizing authenticity and ease of installation.
DiversiTech CVENT-3: 3-Inch Concentric Kit
This 3-inch concentric kit supports higher-efficiency furnaces and tankless water heaters with a dual-pipe configuration. It helps streamline installations by providing both intake and exhaust within a single, low-profile assembly. Best for homeowners upgrading to efficient appliances where vent routing is a priority. A consideration is the larger 3-inch diameter, which may require broader wall openings and careful clearance planning in tight spaces.
Dakota Sourcing 22153 PVC Concentric Vent Termination Kit, 3-Inch
This 3-inch termination kit is designed for water heaters with horizontal or vertical venting in mind. The single-hole concept reduces installation steps, saving time and labor. Best for projects where wall access is limited and a clean exterior finish matters. A limitation is that device compatibility should be verified with the heater model, as some units require specific termination configurations.
DiversiTech HVENT2 2-Inch Horizontal Vent Kit
This 2-inch kit is tailored for horizontal termination needs, helping conceal both intake and exhaust pipes while delivering a tidy exterior. It’s best for installations where a horizontal run is possible and where wall depth is constrained. A caveat is that the kit is best paired with compatible high-efficiency appliances; verify fit with your model’s venting requirements.
Rheem ProTech Concentric (3″/5″), RTG20274A
Designed as a direct replacement for Rheem, Ruud, and Richmond units, this kit is suitable for walls up to 5 inches thick when additional venting is used. It offers a straightforward path to maintain and upgrade existing Rheem systems with a concentric configuration. Best for homeowners with compatible Rheem-based setups seeking a robust, brand-consistent termination kit. A limitation is that it’s optimized for specific Rheem-family appliances; verify compatibility with your heater model before purchasing.
Buying Guide
What to consider when choosing a low-profile concentric vent kit
- Compatibility: Ensure the kit matches your appliance brand and model. Some kits are generic, while others are designed as direct replacements for specific units.
- Vent size and wall thickness: Common sizes include 2-inch and 3-inch configurations. Measure your wall thickness to avoid overhang or gaps.
- Installation ease: Look for OEM parts or kits described as easy to install, with single-hole options where possible.
- Vent termination style: Horizontal versus vertical termination affects placement and exterior appearance. Choose based on available exterior clearance and aesthetic preference.
- Regional codes: Some kits are not approved for certain states. Verify local AHJ (Authority Having Jurisdiction) requirements before purchase.
- Material and durability: Opt for heat-resistant, corrosion-resistant plastics or metals to enhance longevity in high-temperature exhaust environments.
FAQ
- What is a concentric vent kit?
A concentric vent kit combines intake and exhaust in a single, compact vent assembly, reducing wall openings and improving installation aesthetics.
- Do all kits fit all brands?
No. Some kits are universal, while others are designed to replace specific models. Check compatibility with your heater or furnace.
- Is a larger conduit necessary for high-efficiency units?
In some cases, yes. High-efficiency systems may use larger diameters to accommodate more robust venting requirements.
- Can I install these myself?
Many kits are marketed for DIY installs, but verify local codes and, if needed, consult a licensed professional for safety and compliance.
- Are there regional restrictions I should know?
Yes. Some kits are not approved in certain states. Always check regional venting regulations before choosing a kit.