Myths Busted: The Truth About Common HVAC Misconceptions

How well do you know that roll of HVAC tape?

It’s critical to getting the job done, but it’s not necessarily a one-size-fits-all tool. It’s available in a variety of constructions – from different backings to adhesive types. And, even offers options that meet the code, perform in the cold and deliver superior results.

We’re talking tape.

And, in HVAC work, it has many uses, from seaming and sealing to joining and connecting. So, just how familiar are you with HVAC tape?

True or False? All Tapes Can Be Used for All Materials.
FALSE. HVAC tapes are made with specific applications in mind to ensure the best performance possible. Make sure to choose the right HVAC tape for your application to avoid air leaks, system failure, failed system inspections, poor indoor air quality, high electric bills, and a shortened system lifespan.

True or False? Duct Tape Can Never Be Used for HVAC Applications.
FALSE. Although most duct tapes cannot be used for HVAC applications, there are some duct tapes specifically made for HVAC use. Check the manufacturer’s specifications to ensure the right tape for the job.

True or False? You Need to Worry About Full System Closure.
TRUE. Full system closure means the system is sealed properly and without air leaks. This is the number one goal for HVAC installation and maintenance jobs. Air leaks can cause the HVAC system to lose its ability to efficiently heat and cool as well as negatively impact indoor air quality.

True or False? You Don’t Need to Wipe Down the Tape as it is Applied.
FALSE. Most HVAC tapes are pressure-sensitive, meaning they require some sort of pressure to create a permanent bond. A squeegee is often used to firmly wipe down the tape to guarantee maximum surface contact for secure adhesion.

True or False? UL Listing is Important to Consider.
TRUE. A UL Listing ensures that the tape has been rigorously tested, evaluating qualities such as adhesion level, shear strength and tensile strength, as well as burn, mold and humidity resistance. A UL Listed mark is critical for certain applications.

True or False? You Can Use All Tapes in All Environments.
FALSE. There are specific HVAC tapes for each environment. To ensure the best performance, make sure your HVAC tape is the right one for the project’s environment, considering things like temperature, humidity and cleanliness of the application area.

True or False? Tape Flagging is a Sign of Tape Failure.
TRUE. Tape flagging always indicates that either the wrong tape was used for the application environment, the tape was not correctly applied, the tape lacked quality, or the tape was out of date. Any which way, flagging is a tape failure that can lead to system inefficiency, costly callbacks and more.

True or False? HVAC Tape Can “Go Bad.”
TRUE. The proper way to store HVAC tape is on its side with the core facing up and it should be kept on a shelf or in a storage area away from dirt and debris. For an HVAC tape’s best possible performance, do not use tape that is more than a year old.

Bottom line…picking the right tape for the job is critical to a job well done – one without costly callbacks and damage to your reputation. Learn more about choosing and using the right tape for the job at For more information about Shurtape’s assortment of HVAC and insulation tapes, visit