
How Insulation Keeps Your Home Cool and Warm
There are some misunderstandings about home insulation that we often encounter in our work. One of the most common is that the purpose of insulation is to keep a house warm. That is one of insulation’s purposes, but not the only one. Because people often associate insulation to keeping protected against the cold, they don’t often realize that insulation will also keep them cool. This is why, even in a desert climate like that in Glendale, AZ, insulation is vital for your home. Without proper insulation, your AC would struggle every moment it was on during the hot season, and you would pay a small fortune in energy bills.
To make sure you have effective insulation, talk to our comfort experts at Goettl Good Guys Air Conditioning. We offer a full range of insulation services in Glendale, AZ.
What Insulation Does
Insulation is a thermal barrier: it blocks the movement of heat. Heat travels in three ways: conduction (the movement of heat through contact, such as when you touch a metal pan that’s been in an oven), convection (the movement of heat through air, such as feeling warmth in the air blown from a furnace vent), and radiation (the movement of heat in electromagnetic waves off a heated object, such as feeling heat coming from sunbaked asphalt). Insulation, most of which is composed of fluffy material, stops the movement of heat through convection and conduction, although not through radiation.
During cold weather, the insulation in your home traps the heat coming from your heating system and prevents it from escaping outside. This is especially important in the attic, because heat rises and the attic is the main place it will leak out. Insulating the attic works the same way as wearing a woolen cap on your head on a cold day.
During hot weather, insulation prevents outside heat from entering your home, and thus makes it easier for your air conditioner to overcome the temperature.
You might at this point wonder what can be done with heat moving through radiation, since insulation doesn’t stop that. But there’s a solution to that as well: radiant barriers. This reflective spray put on the undersides of roofs deflects radiant heat from direct sunlight so it cannot enter a house through the attic. A single coat can block out 80% of the sun’s heat energy, which is extremely helpful in sunny Arizona.
Make Sure Your Home Has the Best Insulation
If your bills for heating and cooling seem abnormally high, you may need to have new insulation put in, or perhaps a radiant barrier added. We offer a variety of energy-efficient services. For installation and repairs on insulation in Glendale, AZ, contact us today and schedule your next service appointment!
Testimonials
What Our Customers Say About Us



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!


Edit 5/30/2025: It was A/C rejuvenation time and she needed a little maintenance work done. Andrew Morgan came out to give her the attention she needed this time. He diagnosed the issue, thoroughly explained what was going on and what was needed to help keep her in good working condition, and proceeded to take care of things today - which I greatly appreciated! Would recommend him to anyone.
Edit 11/22/2024: Since Google doesn't allow you to leave another review for the same company, I'm editing a previous one to add a new review for Matthew Lopez. It was time for my furnace rejuvenation and fortunately it was a cool enough day to turn the heater on for the first time. He was prompt, friendly and knew his stuff. He took his time checking things out and made sure I didn't have any questions or issues before he left. Because I have allergies and pets, he did tell me about an air purification system that I might want to consider in the future, which I appreciated. Would definitely recommend him and Goettl.
Edit 12/23/2022: previously I've used them for plumbing but today I used their AC/Heating service. My poor system decided it was time to go on one of our coldest nights. Called very very early and had someone out that morning to triage what needed to be done (Billy) and then Raymond and Manny G came out and installed my new unit and a new thermostat. Everyone was friendly, informative, didn't mind questions, let me know what was happening along the way and Raymond even cleaned up after they were done! Thanks guys!
I've used Goettl a few times for plumbing issues and have always found them to be very communicative, knowledgeable, polite and friendly. Ralph was the latest one to come out and I appreciate the way he listened to me and answered my questions. Even more importantly, I appreciate the price! I've recommended them to family, friends and co-workers as a company that can be trusted. Nice to know I'm in good hands.











Was very friendly and informative.
Good job Eric!
Thank you Goettl!


On time.
Answered my questions to my satisfaction.
Took care of drain problem quickly.
Work space was cleaned.
I highly recommend Corey and Goettl



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.


Thanks Goettl for sending such a great employee to our house 👏 !
And more importantly thanks IVAN for outstanding job ! 👏 👏👏👏👏🙏🙏



He repaired our toilet in a very timely manner and left the room tidy
Would highly recommend Adam










Sally






Thank you once again goettle and Lupe for a job well done!








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 appreciate Goettl being professional and respectful of my home thank you
Highly recommended company!


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.

This appointment was to check that my heater is working properly before winter arrives.








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!







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.


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!


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




