
Why Dirty Coils Are a Problem For Your Home
Your air conditioning system has one job: remove heat from your home and exhaust it outside. Two of the most critical components of its ability to do this are the evaporator coil and the condensing coil. Here at Goettl, we offer air conditioning maintentance for all different types of systems and we wanted to share a little bit about why keeping those coils clean is so important.
Common AC Repair: Dirty Coils
In order to understand why dirty coils are such a problem for your AC, you need to know a little bit about how they work.
Central air conditioners typically are comprised of two separate units: an indoor evaporator unit and the outdoor condensing unit. A fan in the indoor unit pulls in warm air from your home and passes it over the very cold evaporator coils which are filled with a refrigerant that absorbs the heat out of the air. The newly-cooled air then continues on into your home. The refrigerant is circulated outside carrying the heat from your home which gets exhausted at the condensing coils.
If either set of coils, the evaporator coils or the condensing coils, get dirty it can cause big problems for your home’s efficiency and comfort.
Here are a couple of problems that can arise from dirty coils:
- Not enough cooling – If the evaporator coils get covered in dirty or dust it can keep them from successfully absorbing enough heat from your home’s air. This means that the air moving into your home won’t be cool enough and your home won’t be comfortable.
- Inefficiency – Also, if the evaporator coils are dirty it will make your air conditioner have to work harder to cool your home which reduces its efficiency.
- Constant running – If your air conditioning system won’t stop running it could be because the outdoor condensing coils are dirty. This happens because the system isn’t able to exhaust any of the heat that it is absorbing out of your home. This is a huge problem because this will cause your system to experience more wear and tear which could lead to more repairs. It will also likely reduce the comfort of your home because you won’t be able to get rid of any heat from your home.
If you need air conditioning repair, call Goettl Air Conditioning and Plumbing today! We Do Things the Right Way, not the Easy Way.
Testimonials
What Our Customers Say About Us







Thank you for your service this morning.





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!





Very professional!






Tech was polite, friendly, professional and knowledgeable. Explained what happened and why. Checked entire system to insure there was no further damage. Great job! Very pleased.










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




Had Andrew come out to remove garbage disposal and repipe sink. He also swapped out 13 emergency water shut off valves in 3 bathrooms.
Andrew was professional, courteous and expedient. He did have to run out to get some supplies. He stayed until 7pm to complete the job on one trip.
May 2023 update. Technician Steve came today to do the summer rejuvenation. Friendly and professional tech. Explained the process and findings. Both systems are new, so everything checked out good. Did a god cleaning of coils and now all set for the summer season. Had them out for fall prevention service and to review the systems that are here. I just bought the house and needed to understand what was in place.
The service tech, Kevin was very knowledgeable, friendly and professional. He explained and provided photos and video of all components. He ensured keeping house clean and wore booties.
My second unit is not in the best shape, and Kevin explained each of the issues. I will follow up with service managér to determine next steps (repair or replacement).
I signed up for there service plan and am very pleased with the service and communication to date
12/21 Luis C came today to do routine maintenance on hot water heater. Professional and courteous. He did a through job and explained everything.
10/15. Juan came today and did a great job. He was professional, courteous and friendly. Was here for exterior water bid but also did a hot water heater. Took his time and explained everything.
10/22 update. Timothy was here to due furnace rejuvenation. Very professional, courteous and friendly. He did a very thorough inspection. Everything looked good, but did comment on lack of insulation as has been noted before. Did not have current code. But was ok. Explained the benefit of higher level/depth of insulation. Scheduled so as to get current rebates.



My concerns have been resolved satisfactorily. They will continue to get my business. Thank you!



After toughing it out for a night I scheduled a service check with Goettl. Jorge came out and I'm so thankful that he was the one to show up. I was greeted at the door with a gift for my doggo and a new flashlight. Jorge took a look at my system and he knew his stuff. Optimal operating temperatures, pressures and the whole works. He took the time to explain it to me, show me the failed parts and even give me a list of options. With those he gave me realistic expectations at each price point.
He was able to work his magic and get my system back online and my house cool again. This isn't my first time calling on goettl and it won't be my last.





I’ll be canceling my home warranty and working directly with Goettl Air Conditioning & Plumbing from now on. Their reliability and customer care are unmatched. I’m very grateful for Jesus’s honesty and dedication highly recommend!








I do appreciate it n value you advice n tips n suggestions. Thank again . Shelly Adams







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 ❄️⛄️😎







He came to my home explained what had happened to my water heater, he also explained all of my options.
He’s a wonderful young man and he knows plumbing inside & out.
Goettl is a trustworthy company with skilled employees.
Thank you Zack 🙏

Did work for me twice, i would definitely ask for him again.
Daniel was professional and very knowledgeable. Did a great job of explaining everything when doing my HVAC maintenance.








Regards & Thanks again
James & Debbie Terrazas
7003 Mill Wheel




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!



His experience led us to a solution for our pipes, which saved us thousands and thousands of dollars.
He’s a good man to have on your side



The service was perfect. The technician Julian Bray was pleasant, knowledgeable and completed the install quickly. The area was left cleaner than when he arrived.



Installer Tech Ardian and his assistant arrived on schedule this morning and have completed the job that needed to be done orderly and neatly. Thanks everyone.


Jesus was are tec came in check everything let me know what would need to be done or taken care of came in respectfully with a great attitude
Highly exceptional service we definitely will be requesting him if possible great experience today







.




Sally
















If there was a 6th star, he’d be getting it!








Thank you Preston






Professional, knowledgeable and efficient. Very polite and courteous
Also installed surge protectors on the the condensers














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!

I definitely recommend Goettl for all your needs.


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.

