Business Details
50+ Years
experience
Emergency
services
Trusted HVAC & Plumbing Services in St. Louis Since 1926
All Air Systems Heating & Cooling has been serving St. Louis and surrounding areas since 1926, providing trusted HVAC and plumbing services for residential and commercial clients. Our team of highly trained technicians and plumbers delivers 24/7 emergency repair, installation, and maintenance services for heating, air conditioning, geothermal systems, boilers, furnaces, and plumbing infrastructure. With over 35 years of combined experience, we prioritize customer satisfaction through free estimates, comprehensive maintenance plans, and a 100% satisfaction guarantee.Our fleet of 100+ service vans ensures same-day response times, supported by 3,000+ five-star reviews from satisfied homeowners and businesses. As a locally owned company, we maintain industry certifications and licenses for plumbing (PL12616) and HVAC (SCC-X3029) services while offering flexible financing options to meet diverse client needs.
Services
HVAC Services
Plumbing Repair
Air Quality
Commercial HVAC
Maintenance Plans
Details
- Year established: 1926
Highlights and features
- 24/7 emergency service with same-day response times
- 100% satisfaction guarantee on all services
- Technicians with over 35 years of combined experience
- Flexible financing options available for all projects
- 3,000+ five-star reviews from local customers
Associations and certifications
- PL12616
- SCC-X3029
What people say
Great customer service
Highly skilled technicians
Prompt and professional
Satisfaction guaranteed
Knowledgeable staff
Services
Heating Services
We provide comprehensive heating solutions including boiler repair, furnace installation, and geothermal system maintenance. Our technicians service gas, electric, and oil-based systems with 24/7 emergency repair availability. Regular maintenance ensures optimal efficiency and extends system lifespan for residential and commercial properties.
Air Conditioning
Our AC services include ductless mini-split installation, heat pump repair, and air handler maintenance. We offer emergency cooling solutions during summer months and energy-efficient system upgrades that reduce utility costs while maintaining indoor comfort for homes and businesses.
Plumbing Services
We handle all plumbing needs from leak detection and sewer line repair to water heater installation and gas line maintenance. Our certified plumbers provide emergency plumbing services 24/7, preventing water damage and ensuring code-compliant installations for residential and commercial properties.
Air Quality
Our indoor air quality services include UV purifiers, air scrubbers, and humidity control systems. We perform comprehensive air quality testing and install filtration systems that reduce allergens and improve respiratory health in homes and commercial buildings.
Commercial HVAC
We service commercial HVAC systems including rooftop units, large-scale heat pumps, and industrial plumbing infrastructure. Our team maintains business operations through preventive maintenance plans and emergency repairs for offices, hospitals, retail spaces, and educational institutions.
Questions
What HVAC services do you offer?
We provide heating, air conditioning, geothermal systems, boilers, furnaces, ductless mini-splits, and indoor air quality solutions for residential and commercial clients.
Do you offer emergency services?
Yes, we provide 24/7 emergency HVAC and plumbing services with same-day response times across the St. Louis area.
Are financing options available?
Yes, we offer flexible financing including 0% interest for 60 months on qualifying HVAC and plumbing projects.
What areas do you service?
We serve St. Louis, St. Charles, Affton, Oakville, and surrounding communities in Missouri and Illinois.
Do you have maintenance plans?
Yes, our maintenance membership includes priority service, discounts, and comprehensive system tune-ups to extend equipment lifespan.
How long have you been in business?
We've served the St. Louis region since 1926, with over 35 years of combined experience among our certified technicians.
Reviews (2)
Matthew Kinsella Sr
Dec 04, 2014
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We had a very satisfactory experience. Being on their maintenance program revealed a furnace problem that could have resulted in the unit failing this winter. The staff was courteous and professional. I would recommend All Systems Air to anyone for heating and air conditioning needs.
Geri Wolf
Aug 28, 2014
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Really enjoyed doing business with All Air Systems! Everyone who helped me were kind, courteous, and very professional. Excellent service! Keep up the good work!
