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Phenolic Duct System SPECIFICATION

Phenolic is a high performing alternative duct material that helps HVAC Contractors increase the thermal and duct leakage efficiency of their systems. Using phenolic also means that there is no need for separate ductwork and separate insulation as it is a 2-in-1 solution that does the job of both. This can offer many benefits for an installation.

UL 181 Listed Safety

Some Phenolic Ductwork systems have gone through extensive UL testing to achieve a UL 181 Listed status, starting with - Kingspan KoolDuct back in 2004. This is an extensive and rigorous series of tests and ongoing inspections that covers many aspects of safety and product durability - structural testing, pressure testing, mold and bacteria growth, static load and flame and smoke spread, among others.

Weight Savings

Ductwork made out of rigid phenolic foam can provide significant weight savings on your project. Indoor systems offer the highest savings, with rectangular, round and flat oval systems all capable of providing over a 70% reduction in weight compared with sheet metal wrapped in fiberglass.

High R-Values

Phenolic has an excellent thermal performance with some of the best R- values per inch of insulation available on the market .This superior insulating efficiency means that the required R-value can be achieved with thinner insulation. With the increasing pressure of energy codes always moving towards more insulation, Phenolic duct systems provide solutions that don’t only meet today’s code requirements but those of the future too.

Space Saving

Phenolic ductwork is pre-insulated, which means it does not require any additional insulation wrapping. Because of this, space requirements are minimal and duct can be installed in tighter places, including flush to ceilings and walls to free up more space. You may also need fewer hangers to contend with depending on the size of the ductwork.

Lower Air Leakage

Phenolic ductwork assembled and installed in line with the SMACNA Phenolic Duct Construction Standards can easily achieve anything between a SMACNA Class 1 and SMACNA Class 3 leakage rating. The long term benefits of this lower air leakage can include reduced runtime on HVAC equipment over the life of the system therefore bigger energy savings, better Indoor air quality with phenolic’s smooth aluminum interior and improved comfort.

The Advantages of Using InspiralR and Floval For Your Application

InspiralR and Floval are pre-insulated, high efficiency spiral and flat oval duct systems that give you increased thermal performance of round ductwork. These patent pending systems provide thermally efficient and low leakage ductwork packaged in an extremely lightweight and high quality closed cell phenolic insulation. There's no need to insulate separately as all InspiralR and Floval Ductwork reach a minimum of R-6 insulated value!

round pre-insulated ductwork
Insulated Spiral Ductwork System InspiralR
Thermaduct InspiralR factory spiral duct

R-6 Installed Insulated Values

All InspiralR and Floval ductwork come pre-assembled and ready to install at an R-6 insulated value. These systems are UL 181 rated for 10" positive and 8" negative pressures.

The aluminum Kingspan KoolDuct interior provides an interior free of loose fibers that will not support mold growth. InspiralR and Floval are designed to provide customers with extremely low air leakage. Increase your customer's HVAC system efficiency and reduce long term energy costs.

Included Connection Materials

No need to pay extra to install your ductwork, as InspiralR and Floval come with pre-installed couplings and connection materials to install a near airtight connection.

For low pressure systems, this includes sealant, tiger clips and UL 181 approved tape. For high pressure systems, sealant, UL181 approved tape and drawbands are included.

Lightweight Double Wall Spiral Ductwork InspiralR

Lightweight Ductwork

InspiralR and Floval can weigh a fraction of traditional double wall spiral or flat oval ductwork. This can significantly lower the impact ductwork will have on a building and reduce weight hanging above building occupant's heads.

Ease OF Installation

InspiralR and Floval go together quickly and will be familiar to HVAC contractors. Have a virtually airtight connection in around 3 minutes!

Space Saving

InspiralR and Floval's connection drawbands second as a hanging point for this lightweight ductwork. Tight on ceiling space? Floval is your solution for areas where applications may not allow enough space to wrap ductwork.

10 Year Limited Warranty

InspiralR and Floval are built to last and are proudly backed by a 10 year limited warranty.

Find Out More

Connect with a Thermaduct Representative or Contact Us to learn how Thermaduct can provide high efficiency air distribution for your next application.