65+ Years of HVAC Service In St. Louis
If you get the "OH-NO!" when you turn on the AC...
Contact AL-DON and experience the best! Stay cool and comfortable with AL-DON Air Conditioning Specialists, the ultimate HVAC contractor in St. Louis.
- Top-notch service and installations by trained, qualified technicians. Your AC will be singing smoothly in no time!
- SEER2 energy calculator is super-efficient, telling you exactly how much you’ll save on utility bills.
- If you settle or less, you get less, everyday.


Technicians who are the experts
Always striving to offer the best there is
At AL-DON, we understand the frustration of dealing with AC issues. That’s why our dedicated technicians are here to solve your cooling problems efficiently. With rigorous training and a passion for excellence, they’re equipped to tackle any AC-related issue, ensuring your comfort year-round. Experience the difference with AL-DON.
Our Customers Say It Best on Google
Aldon has served our HVAC needs for over 15 years! This company has personable employees and regular technicians we have gotten to know over the...Read More »
4 weeks ago via Google
Stephanie Calcari
The service provided by Al-Don is great! We’re always confident our heating and cooling systems functioning properly. We mainly work with Will - he’s always...Read More »
2 weeks ago via Google
Ben Nelson
I have been so extremely satisfied with Al-Don Air Quality Specialists for over 30 years. Lisa Whitson just left my house performing spring/summer maintenance on...Read More »
a week ago via Google
Frances Gould
AlDon has been servicing our homes for over 20 years. They have always been outstanding and treated us well. Hector does a great job and...Read More »
a week ago via Google
Jim Greenstein
We have been using AlDon for decades and have had Hector as our requested technician for many years. The quality of their service has been...Read More »
a month ago via Google
Benjamin Schwartz