
How Professionals Perform Duct Sealing
Air loss is one of the main problems you can encounter with ductwork. In fact, 30% of your total air loss can come from faulty ductwork. The best way to repair your ducts, and reduce air loss, is with professional duct sealing in Scottsdale. Working on ductwork can be arduous and complex, and it can be easy to miss troublesome cracks and holes. This is why it’s important to use professionals for any ductwork repair, and why Goettl Air Conditioning is the company to call.
How Are Ducts Sealed?
Here is an overview of how ductwork is sealed:
- It’s important the ducts are clean, so your technician will wipe the ductwork to make sure the surface is dry; this helps the sealant bond correctly.
- The technician will use a product called mastic, a sticky, thick, fibrous sealant, in combination with a fiberglass or foil tape, to seal your ducts. Mastic has a cure time in which it becomes extremely hard, which is why it is used. Important note: never use duct tape to seal ducts. Duct tape, and any other tape, usually doesn’t stick and will degrade quickly.
- Using a stiff-bristled paintbrush, your technician will spread duct mastic across the seams, joints, holes and cracks of your ductwork. He/she will then lay the tape over the mastic, and apply another layer of mastic over the tape. This will continue wherever leaks are found.
- Typically, your technician will work from the indoor unit to the furthest register in your home. This is because holes, leaks and gaps tend to appear closer to the indoor unit due to the higher air pressure in this area. Leaks also tend to be common close to the blower fan and where the ductwork emerges from your indoor unit.
Successfully Combat Air Loss with Professional Duct Sealing
Air loss can stress your air conditioner, push your energy bills up and decrease comfort levels; by decreasing your air loss, you can seriously reduce these problems. However, to ensure you are getting the most from your duct sealing, always use a trained professional. Ductwork can run through crawl spaces and attics, and cracks and holes can be difficult to find. Building on 7 decades of the Goettl brand, Goettl Good Guys Air Conditioning has been helping customers in Scottsdale with their air conditioning. Call us today and schedule an appointment with one of our technicians!
Testimonials
What Our Customers Say About Us










I think the guy that was supposed to be assigned to me had problems. My appointment was from 9-1 and Austin was assigned to me at 1:30 and Drove over an hour to get to me.
Now that's 💜
11/24/25 Seems this is an update not its own post. Adam was out to repair our filtration system. No muss no fuss and it was fixed. Awesomely competent guy







Job done quickly and efficiently. Thank you


March 2025 - Jesus Gloria came out in an instant to help us out and quickly fixed our problems. Give this man a promotion!
February 2025 - Our unit was working properly with the cold weather, but Michael showed up and had it fixed in no time! He was also nice enough to give my son a stuffed animal and flashlight. Great service.
September 2024 - Johnny Rivera and Billy Solis came by to fix some work for me and did a fantastic job. Give these guys a raise!




A special shout-out goes to Pablo, our technician. He was on time, friendly, and extremely knowledgeable. Pablo took the time to explain everything he was checking, walked me through the condition of each component, and gave helpful tips on how to keep our system running efficiently year-round. His attention to detail and pride in his work really stood out. Because of his professionalism and the overall quality of service, Goettl has definitely earned my trust and future business.
Highly recommend Goettl HVAC—and if you can, ask for Pablo!

Veronica and Kdyn did a great job cleaning our ducts too!

I have seen Goettl vans all over town and so I called them.
Got appointment right away and the Technician, Jef Eusepi, took care of our problem.



Call Goettl and was able to get us on the schedule due to a cancellation they had.
Jef Eusepi our tech was fantastic.
He explained everything and showed us pictures of what he was doing and fixing.
Would definitely recommend this Company and Jef.

He was knowledgeable and friendly and was able to flush the tank and get my hot water flowing again. Thanks again...






(Oldest)Jared was great. Got here promptly and fixed it quickly. Lifesaver on a 100+ degree day!







8/14/25 Update:
Billy, Goettl technician, service our AC late on Sunday night, then scheduled to come and double check the unit in a few days. Everything checks out and is working well now. Thanks Billy for great customer service
8/10/25 Update:
AC not working again since Friday night (8/8/25). I contacted Goettl as instructed, not satisfied with the response, still waiting for resolution and contact/communication from a manager.
*****
7/30/25 Update:
Goettl assistant install supervisor Nacho and his crew (Manny & Julio) assessed the entire system again today. They were polite and professional and made sure all our concerns were heard and addressed. It is believed the issue has been identified and fixed. Thanks Goettl for making the situation right!
7/22/25 Update:
Issues continue. Techs to arrive again today. Updated review to follow pending outcome.
7/2025 Update:
Goettl service technicians have returned to assist with some issues. Both Ian P. and Will M. we're both very professional it was believed issues were resolved. Dispatcher Betty was also able to hear my issues and arrange for a tech to arrive as quickly as possible.
*****
Initial review 2/2025:
Jorge "George" was respectful and easy to communicate with. He listened and answered all our questions. Informed us of what and how Goettl could do with the 20+yr old system in our home, and gave us time and space make the best decision for us. So far very pleased with Goettl's professional conduct and standards.







Gilbert Castaneda was our technician today for A/C maintenance. He was informative with all my questions, did his job in a timely manner and a very pleasant young man to work with.


Really a 5 star on original review.









On time, clean, and very thorough with any potential issues.
Thank you.



Thank you Jesus!
Adrianna Cardenas
Tyler Leija came to my home and flushed out my two water heater’s. This had never been done to the home since it was purchased in 2017. Let me tell you the stuff that came out of the water heater’s was an eye opener! It was filled with so much calcium deposits. Tyler was very knowledgeable and explained everything going on. Thank you Tyler for coming to our home and flushing out our water heaters.











Chris R came out for our Sadie Membership inspection and review before the cold comes here in TX. He did a fantastic job and really knows his stuff. Thank You!


As always great experience with Goettl services and staff. Thank you!
















Mike provided truly exceptional service. From the moment he arrived, it was clear he was extremely knowledgeable; he quickly and confidently diagnosed a very tricky issue that we had with our pipes, explaining everything clearly and answering all of our questions with patience. He also installed our new water heater and did an outstanding job. If you need a plumber who gets the job done right the first time, we highly recommend Mike. Thank you!








The Goettl team has been very professional and helpful to me as their customer. Thank you, Kelli Stoika.
PS… If there would’ve been 6 stars on the scale, that’s what I believe they should’ve received.




Sally






UPDATE Julian and his team, Nick & Jeffery, were here to fix my sewer pipe. They explained everything thoroughly and kept me apprised of their progress. When they finished, it looked as if they hadn’t been here even though they dug a giant whole in my yard! Most impressive! I highly recommend Goettl.
UPDATE November 14, 2025
Goettl continues to be a 5-star company for me. Always, on time, clear explanations, fair pricing, respectful of property and competent, friendly staff. Caelin was my team member today and upheld all of these values.


Jason and Marco operated like a well oiled machine with one replacing the AC unit while the other replaced the furnace. Clean up was excellent and the system works beautifully now.

I will definitely use their services going forward.
Thank you Goettl Air crew!

Greg Sanches

Thank you Jef, for helping me keep my home cozy and safe.

I especially want to give a shout out to Connor, who did the replacement, he was awesome. He was respectful and cleaned up afterwards. I even commented on how impressed I was that he was able to fit everything needed in a small space.
Overall I would recommend Goettl services especially in an inconvenient situation like mine. They will make you a priority.





Thank you,
Greg Sanches





















This past week our service technician was Andrew Morgan and he is such a friendly, knowledgeable, and skilled technician. He spent time making sure the job was done correctly and he explained it in terms that I could understand. Not only is our unit functioning even better than before, I also gained knowledge of how the system works.













I highly recommend Goettl as this is the second time l've used them in less than a year. (2 seperate issues)... and I highly recommend them..anytime and anyday.
They have exceeded to top any expectations I could have ever had with any company.


Jerry also noticed our water pressure was low after flushing toilet then trying to wash hands in bathroom sink which were so he suggested a new pressure regulator as we have had a new better water conditioning system installed. We now have the best water pressure even when using a shower and kitchen sink faucet at the same time. Also Jerry is a master plumber and we appreciate his knowledge and experience. Will definitely call Goettl again when a plumber is needed.
Ralph & Kathy Lesmeister



Darean Guerra today. He arrived on time and took the time to explain what he was going to do. He was very knowledgeable which helped me trust what he was doing. He left his work area clean. I am very pleased with his work.




Now we have a new flange, installed correctly, and ready for the new toilet!






The company is installing a tankless heater and the customer service is outstanding.
I recommend Geottl to all!


They made sure my carpet was covered and when they were all through they cleaned up perfectly
I would recommend your company to anyone looking to put in a new air conditioner.
Thank you so much for all you did for me.
Sincerely, June Jones

And I would highly recommend the company and the quality technicians like Jarod.
Jarod is the go to if you want excellent
Customer service and communication for any AC related issues. He is very knowledgeable, personable and trustworthy. I am grateful and satisfied.







They listened to my issue, were very through, checked for leaks, etc. I’ve lived in Lakeway for 30 years, used MANY local plumbers - but Goettl will definitely get all my business moving forward. HIGHLY recommend!
Ty, Wil & Adrian!

Everyone from the Goettl sales representative Christian, Tech / Advisor Josias recommended a HVAC A/C and Heating system replacement. Technicians team Veronica and her partner.


Jeremy Canchola serviced our mini-split today with the usual Goettl efficiency and professionalism.
Highly recommended!





