
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



She showed up even late in the evening completely focused and energized. Completely knowledgeable and able to provide complete assessments of my system. I want her back every single visit now 🙏🙏🙏.
I highly recommend the Sadie watchdog program!!! 👍👍👍















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I am very happy with the service I received today from Parker, he had to install a warranty part that was going bad. I am gratefully that he found my problem. I will always call Goettl for my service.
I had Zack Beckett do my two toilets for me. He did an amazing job, they both work well and no leaks. I recommend him highly.. Thanks Goettl for great technicians..
Elaine T










Explained everything clearly and was very respectful..
Thanks for a job well done Frank.

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 💜

Excellent work and I’ll be happy to work with him in the future,
Thank you!
—Rey


We are true believers of Goettl and will definitely use them in the future!







I also want to give a big shoutout to the management team. it’s clear they really care about their clients but, even more importantly, they take care of their team. That kind of support really shows in the quality of the service. I will definitely be using Geottl for future plumbing needs.


He was on time, very polite & professional, walked us through the HVAC Rejuvenation testing and shared all results.
Really appreciate the time he took to explain, wearing the booty covers on his shoes and follow-up afterwards.
Excellent service!
What more can you ask for….
Gratitude.
Michael & Angela









The Service Manager reached out and we spoke, he explained the reason for the high cost of the repair and offered to credit our account with a substantial amount,
This is a company that stand to what they advertise and their workmanship is above what they promise.
I would recommend this company to all my neighbors.
I also enrolled into their monthly membership to come out twice a year and check everything out.
Thank you for standing behind your work….
Have been trying to speak to a Service Manager since Sunday the 26th of October, it is now October 29th called every day but no answer.
I was billed $270 for 50 minutes of a copper pipe repair, and over $600 for a close to 18 inch pipe with a fitting.
The repairman man was cordial,, it’s the company Goertl that is not a good customer friendly company. When I called to dispute the charge I was told that they are the most expensive company around. Shame. shame, also it’s a veterans owned company and they only gave a 5% discount to us because of my husband being a veteran.
Our dispute is on the cost of material, hence the hole where pipe need repair was pre prepped.
All main valves were shut off and pit was dried.

We are confident that our system will be amazing , are thankful that Mike provided us a good experience.














Great service!
ML











Regards & Thanks again
James & Debbie Terrazas
7003 Mill Wheel




Daniel came out for a new issue and got it all handled in one visit. Love this company and their techs!














Caleb was professional and clear. He showed me what he found and told me how I could proceed. Thank you Goettl 😊 and thank you Caleb!





Thermostat. Stopped working on Monday night 10/20 /2025. GOETTL Tech. Kevin Andrew text to notify me of his ETA. Was very punctual. Explain what the problem was, he checked it out , went up to attic and found the problem. Explain to me the issues that was causing the A/C Thermostat to turn off. Went into detail explaining to me what was causing the A/C Thermostat to turn off. He was very professionalc and ourteous.
Thank you Kevin... Blessings








He explained, while he saw no immediate problems. what we might expect going forward, given the furnace's age and condition. After I asked about major component vs. whole-unit replacement, he provided a thorough explanation, and pricing, of options for us to consider.
Very good experience with Jef! Highly recommend!
















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!


Hopefully, we will get Jack for our next service call.







Robert, Tyler, Adrian & Luis, Thank you all so much.

