Airex
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Airex Manufacturing Inc. is a manufacturer of HVAC refrigerant piping penetration seals and line set protection products, founded in 2009 and headquartered in Thousand Palms, California. Airex designs engineered wall enclosures and outdoor insulation protection systems for residential and commercial HVAC installations. The Airex product line includes the Titan Outlet™ series for sealing refrigerant piping wall penetrations, the E-Flex Guard™ for protecting outdoor line set insulation, and the Pro-System Kit™ for complete penetration and insulation protection in a single assembly. All Airex products are manufactured in the USA and carry a 10-year warranty. Titan Outlet™ enclosures are tested to ASTM E283 for air leakage resistance, ASTM E331 for water penetration resistance, and UL 746C for outdoor weathering stability, and comply with 2012–2021 IECC energy codes. For HVAC contractors working on mini-split and central air conditioning installations, Airex products address mandatory building and energy code requirements for refrigerant piping penetration finishing.
Product Lines
Airex Titan Outlet™ (TGS Series)
The Airex Titan Outlet™ TGS Series is a permanent wall enclosure designed for sealing refrigerant piping penetrations on new construction and retrofit HVAC installations. The TGS Series is built for contractors installing mini-split and split-system air conditioners where the line set passes through an exterior wall. The enclosure features an ASA polymer body with an over-molded engineered TPE elastomeric sleeve that forms an airtight seal around pipe insulation, and comes pre-assembled with carbon steel anchor screws and a stainless-steel hose clamp. TGS Series outlets fit insulated pipe assemblies from 5/8" to 1-1/8" diameter at 1/2", 3/4", and 1" insulation thicknesses, and are available in Gray and White to coordinate with exterior finishes.
Airex Titan Retrofit Outlet™ (TRS Series)
The Airex Titan Retrofit Outlet™ TRS Series is a removable and reusable wall penetration seal designed for service calls, system upgrades, and installations where future access to the line set is anticipated. The TRS Series serves the same application as the Titan Outlet™ TGS Series, making the TRS the preferred choice when refrigerant piping may need to be removed or replaced without cutting through a sealed enclosure. The TRS Series uses the same ASA polymer and TPE sleeve construction as the TGS Series and maintains the same pipe and insulation size compatibility. For contractors managing maintenance agreements or working on commercial properties with multiple systems, the TRS Series can reduce future labor time on line set service work.
Airex Titan Outlet for Siding (TSS Series)
The Airex Titan Outlet for Siding TSS Series is a wall penetration seal engineered specifically for lap siding and wood-sided exterior wall applications. Standard flat-profile outlet products can leave gaps against siding profiles, but the TSS Series uses a wall gasket made of durable PVC foam that conforms to irregular surfaces and seals against the stepped profile of horizontal lap siding. The TSS Series fits 5/8" and 7/8" refrigerant pipe combinations with 1/2", 3/4", and 1" insulation thicknesses. For residential HVAC contractors installing mini-splits on wood-sided homes, the TSS Series provides a code-compliant, weather-tight finish where standard flat-back outlets don’t make contact.
Airex E-Flex Guard™
The Airex E-Flex Guard™ is an outdoor refrigerant line set insulation protection system designed to shield exposed foam pipe insulation from UV degradation, physical damage, and environmental exposure between the exterior wall and the condensing unit. Standard foam insulation degrades in outdoor environments, and the E-Flex Guard™ adds a durable protective sleeve over that insulation to extend service life and maintain code compliance over the system’s operating life. The E-Flex Guard™ is designed to work alongside the Titan Outlet™ series as a paired solution, with the Pro-System Kit™ combining both products for a complete installation package.
Airex Pro-System Kit™
The Airex Pro-System Kit™ combines the Titan Outlet™ wall penetration seal with the E-Flex Guard™ outdoor insulation protector into a single installation package. Contractors installing split-system HVAC equipment need both wall penetration sealing and outdoor insulation protection on every job, and the Pro-System Kit™ consolidates that material into one kit. The Pro-System Kit™ is designed for residential mini-split and central air installations and provides a complete, code-compliant penetration and insulation protection assembly from a single source.
Why Contractors Specify Airex Manufacturing Inc.
Airex Manufacturing Inc. products are made in the USA and carry a 10-year warranty backed by a California-based manufacturer. Titan Outlet™ enclosures are independently tested to ASTM E283 for air leakage resistance, ASTM E331 for water penetration resistance, and UL 746C for outdoor weathering stability, giving contractors documented performance data for spec submittals and building inspections. The products comply with mandatory requirements in the 2012 through 2021 International Energy Conservation Code, Uniform Mechanical Code Chapter 11, and International Mechanical Code Chapter 3, removing ambiguity from code compliance on refrigerant piping penetration finishing. For jurisdictions that have adopted current energy codes, Airex products satisfy requirements that mandate sealed and insulated piping penetrations, a requirement that adhesive tape alone doesn’t meet.
How to Choose an Airex Manufacturing Inc. Product
Selecting the right Airex product starts with two variables: the exterior wall surface type and whether the installation is new construction or a service call on an existing system.
For new construction and any application where the refrigerant line set is being installed for the first time, the Airex Titan Outlet™ TGS Series is the standard choice. The TGS Series provides a permanent, sealed enclosure around the piping penetration. For service work, system replacements, or commercial properties where future access to the line set is anticipated, the Airex Titan Retrofit Outlet™ TRS Series delivers the same weather, air leakage, and pest resistance as the TGS Series with the added ability to remove and reinstall the enclosure without damage.
If the exterior wall has horizontal lap siding, the Airex Titan Outlet for Siding TSS Series is the appropriate product. Standard flat-back outlets don’t seal against the uneven profile of lap siding, and the TSS Series addresses that with a PVC foam wall gasket that conforms to the siding surface.
For outdoor insulation protection between the wall penetration and the condensing unit, the Airex E-Flex Guard™ protects foam pipe insulation from UV exposure and physical damage. Contractors pairing a wall seal with outdoor insulation protection can specify the Airex Pro-System Kit™, which combines both products in one package and covers pipe sizes from 5/8" to 1-1/8" diameter.
When sizing any Airex Titan Outlet™ series product, match the model to the combined insulated pipe outside diameter, accounting for both the refrigerant pipe size and the insulation thickness. Airex provides CAD library documentation and product dimension sheets for sizing confirmation.
FAQs
Where are Airex products made?
Airex products are manufactured in the USA by Airex Manufacturing Inc., headquartered in Thousand Palms, California. The company specializes in refrigerant piping penetration outlet seals and outdoor line set protection products for the HVAC trade.
What warranty does Airex offer on the Titan Outlet series?
Airex Titan Outlet™ enclosures carry a 10-year warranty, covering the TGS Series, TRS Series, and TSS Series wall enclosures. The 10-year warranty is backed by Airex Manufacturing Inc. in Thousand Palms, California.
What’s the difference between the Airex Titan Outlet TGS Series and the Airex Titan Retrofit Outlet TRS Series?
The difference between the Airex Titan Outlet TGS Series and the Airex Titan Retrofit Outlet TRS Series is removability. The TGS Series is a permanent installation designed for new construction and first-time line set installs, while the TRS Series is designed to be removed and reinstalled, making it the better fit for service work and installations where future access to the refrigerant piping may be required. Both series use the same ASA polymer and TPE sleeve construction and cover the same pipe and insulation size range.
What pipe sizes do Airex Titan Outlet products fit?
Airex Titan Outlet™ series products fit insulated refrigerant pipe assemblies with pipe diameters from 5/8" to 1-1/8" and insulation thicknesses of 1/2", 3/4", and 1". To select the correct model, match the SKU to the combined insulated pipe outside diameter. Airex dimension sheets and CAD files are available.
Are Airex Titan Outlet products compatible with current energy codes?
Airex Titan Outlet™ products comply with the 2012 through 2021 editions of the International Energy Conservation Code (IECC), Uniform Mechanical Code Chapter 11, International Mechanical Code Chapter 3, IBC Appendix F, and IRC Chapter 11. The products are designed to satisfy code requirements that restrict the use of adhesive tape on refrigerant piping penetrations in exterior walls.
When should the Airex Pro-System Kit be specified instead of individual products?
The Airex Pro-System Kit™ may be the right specification when both a wall penetration seal and outdoor insulation protection are required on the same installation, which covers most residential mini-split and central air conditioning jobs. The Pro-System Kit™ combines the Titan Outlet™ wall seal and the E-Flex Guard™ outdoor insulation protector in a single package, reducing the number of separate line items on a material order.
