
Common Duct Contaminants to Look for
Theoretically, your ducts should constitute part of a sealed system. Air moves from your central HVAC unit through the ducts into the rest of your house, exiting through the vents and warming or cooling your home in the process. In a perfect world, that wouldn’t be affected by anything else. Sadly, we don’t live in a perfect world. Leaks and contaminants spring up, reducing your system’s efficiency and lowering the quality of air in the process. You can address these problems with professional duct cleaning. Glendale, AZ has its share of qualified technicians who can perform such operations, but it helps if you know what common duct contaminants to look for, and how they might affect your ducts’ ability to function.
- Dust. The bulk of duct contaminants is dust, which gathers as air moves through the ducts. Over time, it builds up: passing into your home whenever you turn on your HVAC unit and lowering the quality of your air in the process. Dust can come from any number of places, and might include pet dander, tracked-in dirt and dust from your HVAC unit in particular. In Arizona, the sand and dust of the desert are a constant presence, and will invariably find their way into your ducts by hook or by crook.
- Pollen. We don’t have as much of a problem with pollen here in Arizona as other parts of the country do, but local gardens can still produce pollen, and similar allergens can be found in duct systems as well. Check the conditions in your local neighborhood if this is a concern, and note the kinds or plants or trees likely to product airborne allergens.
- Insect droppings. Bugs often thrive in out-of-the-way places in your homes, which includes the duct work. Over time, droppings from roaches, dust mites and other pests can accumulate in your ducts, then move through your household when the air blows.
Regardless of the source of contaminant, the Glendale duct cleaning experts at Goettl Good Guys Air Conditioning can get rid of it with a solid cleaning. Glendale AZ falls under our service area, as does most of the greater Phoenix area. Once you know the common duct contaminants to look for, give us a call and let us get rid of them for you properly.
Testimonials
What Our Customers Say About Us








Given the extent of the work I need to get multiple quotes and some companies insist on expensive trip charges (one up to $500) to have a “specialist” assess before providing a quote for the work.
These guys were timely, transparent and uncomplicated. I appreciate Shane for quickly putting together an estimate before even leaving the house, providing multiple options at various price point and without pressure of upfront commitment.
I would feel confident moving forward with these guys. Thank you Shane!

Edit 07/10/2025: Matthew Lopez was super friendly and did an amazing job checking out our AC system and cleaning it.
Edit 03/15/2025: Dareen Guerra was super friendly and helped us identify what was leaking water super fast
Edit 12/17/2024: Frank McBride was great and fast
Edit 11/11/2024: Jeremy was great and helped us understand what was going on with our HVAC
Miguel was extremely helpful and quick to fix. 10/10 recommend Miguel and goettl

Rudy and Chris came by to check the water heater and they evaluated everything in great details, they were very professional and friendly.
Definitely recommend Goettl for home service.

8/18 update! We appreciate the ability of Goettl to come out ASAP which went from scheduled 9am next day to just 90 min after the call in. We have 2 AC units and the second one lasted 29 years, but it finally needed to go as of yesterday. We had Hunter this time and of course he was prompt, professional, thorough & informative.
6/2025 update: water filter installed - Max is fantastic! We needed some routine maintenance and he most certainly went above and beyond. Will ask for him again - don’t hesitate to ask for Max, or any of these professional, knowledgeable service providers!
Aaron was great. Kind, professional, thorough with work. We trust this company, and they provide quality. Appreciate their approach to service, and their respect for the clients. Recommend Goettl if you want quality work - quality isn’t cheap but it is affordable!

Frank was wonderful and he allowed us the opportunity to evaluate several aspects of our current circumstances with our water heater. Frank was friendly and professional and we look forward to working with him in the future. Thank you, Frank!


I have used Goettl for years. They are not the cheapest, but the work is always quality and the service and technicians top notch.





Kristian was super professional, explained all steps and fixed shower facet in a short time! My call was on Saturday, and wait time was within 1-2 hours; plus, company did not charge ‘emergency’ fees as many other companies do.
Highly recommend!!


I was so impressed I joined the maintenance program, so an additional shout out to Ryan Angle who completed my water heater service and plumbing inspection, same as the others Great Job… Thanks
Had my AC serviced yesterday, another 5⭐️ for Goettl, Brandon Moreno got everything squared away, Happy Summer 😎👍🏼🆒
Just had my winter service completed by Brandon Moreno, as always with Goettl 5⭐️ again, always courteous, friendly and professional. Happy Winter ❄️⛄️😎
Had a valve issue come up and ended up handling the situation myself, however the visit to initially assess and troubleshoot the problem with technician Ryan Angle was another quite pleasant interaction with the Goettl team. Thanks and Happy Holidays ⛄️❄️😎




Lupe was friendly, respectful, and really interested in what I had to say. He worked efficiently and told us of problems when they arose. Really glad he came!
1/2025
Dusty was an absolute pleasure to work with. He was friendly, knowledgeable, and committed to doing the job right. He was training a new tech and even with that added responsibility, his attention to detail was impeccable. I cant believe how great this company is to do business with. Hopefully we get Dusty again next time! Thank you!!
2024 John was absolutely amazing. From introducing the company and its history to walking through every unit. He was friendly and warm and extremely honest. I wish he could be my technician on everything in my house. Thank you John!!






















Nov 22 2024: Seasonal maintanence check and I once again was fortunate to get Jacobi again. He is a well thorough service tech. Everything went smooth and he explained what he saw and did. A+++++
Mar 25 2024: My service tech's name is Jacobi. He is a very knowledable individual. He mentioned he does maintenance and installation. I was due a routine maintenance but for this call my furance wasn't turning on. He diagnosed and explained it was the blower. Very pleased with his work.
Aug 27 2020: Jeremy did a great job.Called when he was heading over. Cleaned out the dripping pan and cleaned out the drain pipe. Wore his mask while he was inside my house.
Great, fast service even on July 4 2018. Tony was my service tech. He diagnosed and got me up and running ASAP.

I highly recommend Goettl Air Conditioning and Plumbing! Shane Smith, their plumbing service technician, provided outstanding service when we needed a new water heater. He arrived promptly, explained all options clearly, and guided us through the process with professionalism and friendliness. Shane's knowledge and patience made our decision-making easy. We're grateful for his help and impressed by Goettl’s efficient, customer-focused approach. Five stars for Shane and Goettl.
Zach Carlisle from Goettl Air Conditioning & Plumbing did an incredible job installing our new water heater. His exceptional professionalism, courtesy, and expertise made the entire process seamless. Zach kept us well-informed, worked efficiently, and left our home spotless. He even took the time to educate us on water shut-off procedures. Zach truly embodies the values of excellent customer service and craftsmanship. Kudos to Goettl for having such a talented and dedicated installer!





I'm very impressed with Goetel ! We just started using them and so far so good!
Oh, and he even brought a Sadie dog toy for my pups! 😁

Stacy arrived today. He was super knowledgeable and interested in answering our questions (which were abundant). Very friendly and not in any hurry to leave. He took his time to explain what he was doing. He pointed out a dangerous situation with our surge protectors. We had fried wires! We ended up having them replaced right on the spot. We were so impressed with him that we will be requesting him next time we're due for our routine check up. Thank you,
Stacy!
James Jacobson was outstanding with his knowledge and took his time explaining every detail.
Julian and Devin arrived to do the Water Jetting and they were outstanding! I was impressed and I Highly Recommend them.



Cold nights are coming. It’a nice to know the status of the heating system before cranking up the heat. Thanks Goettl!





Thank you,
Greg Sanches

Thank you,
Greg Sanches






Glad to be a proud family member of Goettl










Addendum: Furnace inspection on hold until vents can be don; but new Furnace/AC coming in soon.
Round two: Plumbing with Skip Yonker!!
Thank you Skip for making the whole process more understandable! Very informative and got right to work!! He explained and confirmed what Pablo had pointed out originally. New Water heater coming soon.
Round three: Furnace/AC in!!! Thank You Marco and Rafael for coming in extra early to get started! Had work today but they stayed and got everything installed. I honestly felt very comfortable leaving them here to get the job done!
I have recommended you to two friends already!! They will be calling you soon ☺️
Round four: New water heater pending. To be completed Friday!! Super excited!!



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!!! 👍👍👍







































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.






