Business Details
50+ Years
experience
Emergency
services
Trusted HVAC Services in St. Louis Since 1955
AL-DON Indoor Air Quality Specialists has served St. Louis and surrounding areas for over 66 years, establishing itself as a trusted leader in HVAC solutions. Founded in 1955, the company pioneered maintenance agreements and introduced cutting-edge technologies like the Infltrometer and HEPA-AIRE air purification systems. With a focus on whole-house indoor air quality, AL-DON offers residential and commercial services including heating, cooling, ductless systems, and air purification. The company emphasizes customer education, personalized service, and a commitment to health and comfort.Led by Jeff Miller, who acquired the business in 2009, AL-DON continues to prioritize innovation, reliability, and community trust. Its team of certified technicians provides 24/7 emergency support, backed by partnerships with top manufacturers like Daikin and Amana. With a legacy of excellence, AL-DON remains dedicated to advancing indoor air quality solutions for healthier living environments.
Services
Residential Cooling
Commercial Cooling
Indoor Air Quality
HVAC Maintenance
Air Scrubber Installation
Details
- Year established: 1955
Highlights and features
- We offer 66 years of HVAC expertise in St. Louis.
- Our technicians are Daikin-certified and highly trained.
- We provide 24/7 emergency service for urgent needs.
- Our maintenance plans ensure long-term system efficiency.
- We partner with top manufacturers like Amana and Rheem.
Associations and certifications
- ISO 9001
- ISO 14001
What people say
Polite and professional
Highly recommended
Excellent service
Knowledgeable technicians
Prompt emergency response
Services
Residential Cooling
AL-DON provides expert residential cooling solutions, including AC installations, repairs, and maintenance. Our technicians ensure optimal performance and energy efficiency for St. Louis homes. With a focus on comfort, we offer ductless systems and advanced air purification to enhance indoor climate control.
Commercial Cooling
Our commercial cooling services cater to businesses with HVAC repairs, maintenance, and cutting-edge system installations. AL-DON's team addresses unique challenges in large-scale environments, ensuring reliable climate control for offices, retail spaces, and industrial facilities across the St. Louis region.
Indoor Air Quality
Specializing in whole-house air quality solutions, AL-DON offers Air Scrubber Plus technology, HEPA filters, and humidity control systems. These services reduce pollutants by up to 99.9%, creating healthier living and working environments through proven, lab-tested methods.
HVAC Maintenance
We provide comprehensive HVAC maintenance plans to extend equipment lifespan and prevent breakdowns. Our technicians perform detailed inspections, cleaning, and adjustments for both residential and commercial systems, ensuring year-round efficiency and reliability in all climate conditions.
Air Scrubber Installation
AL-DON installs Air Scrubber Plus systems that eliminate 99.9% of airborne contaminants using ActivePure technology. This service improves air quality by removing germs, VOCs, and odors, protecting families and businesses with continuous purification through existing HVAC systems.
People
Jeff Miller
Owner
Jeff Miller leads AL-DON Indoor Air Quality Specialists, continuing his family's 66-year legacy in HVAC. With decades of hands-on experience since joining in the 1970s, he focuses on advancing indoor air quality solutions and customer education.
Toi Miller
Co-Owner
Toi Miller joined AL-DON in 2009, bringing operational expertise to support the company's shift toward indoor air quality specialization. She works alongside Jeff Miller to maintain the business's commitment to St. Louis customers through innovative service offerings.
Questions
What HVAC services does AL-DON offer?
AL-DON provides residential and commercial heating, cooling, air quality systems, maintenance plans, and 24/7 emergency repairs using advanced technologies like Air Scrubber Plus.
Do you service all HVAC brands?
Yes, our technicians repair and maintain all major HVAC brands, including Daikin, Amana, Armstrong Air, and Rheem for both residential and commercial systems.
Are financing options available?
Yes, we offer financing plans to help customers invest in HVAC upgrades and air quality improvements with flexible payment options.
What areas do you serve?
We serve St. Louis and surrounding communities, providing local expertise with prompt service across the metropolitan area.
How can I schedule service?
Call (314) 567-5585 anytime or use our online form to schedule emergency or routine HVAC service at your convenience.
What accreditations do you hold?
We partner with ISO-certified manufacturers and maintain industry certifications for quality service, including Daikin Comfort Pro network membership.
Reviews (5)
Robert Clem
Dec 06, 2021
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We have been using AL-DON for 17 years. They have always been professional and reliable. But recently, they went above and beyond!! We had and issue with our furnace and between Leslie, Lisa and Alex the matter was resolved, at an affordable price in less than 72 hours. I also learned a few things that will allow me to better monitor my unit in the future. Thanks AL-DON !
Robert Berry
Jul 30, 2021
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Positive:Professionalism,Punctuality,Quality,Responsiveness,Value
Al Don is FANTASTIC!! I LOVE Hector. Hes so knowledgeable, thorough, reliable and professional. Would live to have him here each time. You guys are GREAT!!!
Services:Repair ducts & vents,HVAC maintenance,Repair AC,AC maintenance,General repairs,Install thermostat,Ductless heating and AC services
Al Don is FANTASTIC!! I LOVE Hector. Hes so knowledgeable, thorough, reliable and professional. Would live to have him here each time. You guys are GREAT!!!
Services:Repair ducts & vents,HVAC maintenance,Repair AC,AC maintenance,General repairs,Install thermostat,Ductless heating and AC services
Maggie Rapplean
Jun 26, 2021
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Positive:Professionalism,Punctuality,Quality,Responsiveness,Value
Great service, fast response and really nice people! Very happy with our experience.
Great service, fast response and really nice people! Very happy with our experience.
Marissa Mcvicar
Jun 20, 2021
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Positive:Professionalism,Punctuality,Responsiveness
Hector was very educational and provided tips on what needed done seasonally to upkeep the condition of our ac. Very helpful, professional and polite.
Service:AC maintenance
Hector was very educational and provided tips on what needed done seasonally to upkeep the condition of our ac. Very helpful, professional and polite.
Service:AC maintenance
Oren Walton
May 18, 2021
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Positive:Professionalism,Punctuality,Responsiveness
Alex our service man filled freon in AC found a leak and ordered part. Great service and great service man. Thank you AL-DON FOR ALEX.
Services:Repair AC,AC maintenance
Alex our service man filled freon in AC found a leak and ordered part. Great service and great service man. Thank you AL-DON FOR ALEX.
Services:Repair AC,AC maintenance
