Business Details
50+ Years
experience
Emergency
services
Your Trusted HVAC Partner in Maryland Heights
Since 1971, A C Systems has built a legacy of excellence in HVAC solutions, driven by a commitment to customer-first principles. Our team combines decades of technical expertise with hands-on experience to deliver innovative climate control systems for residential, commercial, and industrial applications. With a focus on precision engineering and relentless customer service, we partner with leading manufacturers to provide cutting-edge equipment and tailored solutions. Our nationwide reach spans 45 states, supported by a dedicated workforce of certified engineers, service technicians, and parts specialists.Through continuous innovation and a deep understanding of industry challenges, we ensure optimal performance and reliability for every project. Our state-of-the-art training center empowers clients and professionals with technical knowledge, while our extensive parts inventory guarantees rapid response times. Rooted in integrity and technical proficiency, we transform complex HVAC challenges into seamless, efficient operations for clients across diverse markets.
Services
HVAC Installation
Parts Supply
Service Maintenance
Training Programs
Consulting Services
Emergency Repairs
System Design
Equipment Sales
Technical Support
Parts Inventory
Details
- Year established: 1971
Highlights and features
- We offer 52 years of specialized HVAC expertise across 45 states
- Our team includes certified engineers and technicians with industry-leading technical proficiency
- We maintain a comprehensive parts inventory for immediate service response
- We provide hands-on training programs developed by HVAC industry experts
- Our nationwide service network ensures consistent support across 45 states
What people say
Most technically proficient engineers
Immediate service response
Nationwide service reach
Specialized brand expertise
Hands-on training programs
Services
HVAC Installation
We provide complete HVAC system installations for residential and commercial properties. Our certified technicians ensure proper equipment sizing, energy-efficient configurations, and code-compliant installations. With expertise in leading brands like AAON and Mitsubishi, we deliver climate control solutions that optimize comfort and operational efficiency for new constructions and retrofit projects.
Parts Supply
Our extensive parts inventory supports all major HVAC brands and systems. From compressors to control boards, we maintain immediate availability of critical components to minimize equipment downtime. With two strategically located parts centers in Missouri and Illinois, we ensure rapid delivery of specialized parts for both standard maintenance and emergency repair situations across our 45-state service area.
Service Maintenance
We offer comprehensive preventive maintenance programs to extend equipment lifespan and maintain optimal performance. Our certified service technicians perform detailed system inspections, component testing, and efficiency optimizations. With 14 service vehicles equipped with specialized tools and parts, we provide rapid response times and minimize operational disruptions for commercial and industrial clients.
Training Programs
Our state-of-the-art training center delivers hands-on HVAC education for industry professionals. We offer equipment-specific training, installation best practices, and system design courses. With access to live equipment from AAON, LG, and Mitsubishi, our programs provide practical experience in system maintenance, troubleshooting, and energy-efficient operations for both our staff and external industry professionals.
Consulting Services
Our expert sales engineers provide technical consultation for complex HVAC projects. From system design to implementation, we offer specialized expertise in commercial applications including data centers, healthcare facilities, and industrial environments. Our team delivers customized solutions that balance performance requirements with energy efficiency and budgetary constraints.
People
Vince F. Stanec, Jr.
Co-founder, CFO
As co-founder and CFO, Vince F. Stanec, Jr. provides strategic financial leadership while maintaining the company's original commitment to technical excellence and customer satisfaction established in 1971.
Vince (Vinny) Stanec, III
VP, Sales Engineer
Vince Stanec III leads sales engineering efforts with technical expertise and a PhD in mechanical engineering, ensuring clients receive solutions that combine innovation with practical application in complex HVAC projects.
Jim Stanec
Sales Engineer
Jim Stanec combines technical knowledge with field experience to deliver customized HVAC solutions, specializing in system design and performance optimization for commercial and industrial applications.
Dan Aubuchon
Service Technician
Dan Aubuchon provides expert field service with specialized training in leading HVAC brands, ensuring rapid resolution of equipment issues while maintaining the company's commitment to technical excellence.
Don Beckley
Sales Engineer
Don Beckley offers technical sales support with LEED accreditation, focusing on sustainable HVAC solutions that balance environmental responsibility with operational efficiency requirements for modern building systems.
Questions
What HVAC services do you offer?
We provide complete HVAC solutions including system design, installation, maintenance, emergency repairs, parts supply, and technical training programs for residential and commercial clients.
Do you serve locations outside Missouri?
Yes, we operate across 45 states nationwide, with primary service centers in Missouri and Illinois supporting nationwide project implementation and service response.
Are emergency HVAC services available?
Yes, our service team provides emergency response with fully equipped vehicles and immediate parts availability to minimize equipment downtime.
What brands do you work with?
We partner with leading manufacturers including AAON, LG, Mitsubishi, Cambridge Air Solutions, and Hastings for equipment sales and service support.
Do you offer HVAC training programs?
Yes, our advanced training center provides hands-on education for industry professionals with live equipment from major HVAC brands for installation and maintenance training.
How quickly can parts be delivered?
With two strategically located parts centers and in-stock inventory, we typically provide same-day parts availability for standard components and rapid delivery for specialized items.
