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Business Details
42 Years
experience
Your Trusted HVAC Partner in St. Louis
Since 1984, Degenhardt Heating & Cooling has operated as a family-owned business dedicated to excellence in HVAC services. With an A+ rating from the Better Business Bureau, we prioritize professionalism, certified expertise, and customer satisfaction. Our team of insured technicians delivers comprehensive heating and cooling solutions for residential and commercial clients, emphasizing competitive pricing and thorough system evaluations.

Backed by decades of experience and continuous training in advanced technologies, we ensure reliable service and long-term client trust through our holistic approach to HVAC maintenance and installation.
Services
HVAC Installation Emergency Repairs Preventive Maintenance Ductwork Fabrication Commercial HVAC Systems Furnace Replacement Evaporator Coil Services Zone System Design Sheet Metal Fabrication System Diagnostics
Details
  • Year established: 1984
Highlights and features
  • Family-owned since 1984 with BBB A+ rating
  • Certified and insured HVAC professionals
  • Comprehensive system diagnostics and maintenance
  • Transparent pricing with no hidden fees
  • Proven track record serving St. Louis clients
Associations and certifications
  • Better Business Bureau (BBB)
What people say
Best service people Fast and friendly Honest and dependable Super helpful Highly recommended
Services
HVAC Installation
We specialize in complete HVAC system installations for residential and commercial properties. Our certified technicians ensure proper sizing, efficient operation, and manufacturer warranty compliance. With access to premium partner brands and in-house sheet metal fabrication capabilities, we deliver customized heating and cooling solutions that meet exact client specifications while maintaining energy efficiency standards.
Preventive Maintenance
Our preventive maintenance agreements protect HVAC system longevity and performance. Technicians perform comprehensive inspections, component testing, and system optimization during each visit. This proactive approach prevents unexpected failures, maintains manufacturer warranties, and ensures consistent indoor comfort while identifying potential issues before they become costly repairs.
Emergency Repairs
While not offering 24/7 emergency services, we prioritize urgent HVAC issues during regular business hours. Our team provides rapid diagnostics and repair solutions for critical system failures, including furnace breakdowns and cooling system malfunctions. We maintain inventory of essential replacement parts to minimize equipment downtime for residential and commercial clients.
Commercial HVAC Systems
We design and implement commercial HVAC systems for light industrial applications and office spaces. Services include system retrofits, mild steel fabrication, and pipe-fitter coordination. Our team handles complete commercial installations, from initial design-build projects to specialized rehab work, ensuring compliance with commercial building codes and energy efficiency requirements.
Ductwork Fabrication
Our in-house sheet metal shop creates custom ductwork solutions for residential and commercial applications. Using precision fabrication techniques, we produce efficient airflow systems that reduce energy consumption and improve indoor air quality. Services include complete duct replacement, retrofitting existing systems, and specialized fabrication for unique architectural requirements.
Questions
What HVAC services do you offer for residential customers?
We provide complete residential HVAC solutions including system installation, furnace replacement, evaporator coil services, ductwork fabrication, and preventive maintenance for homes in the St. Louis area.
Do you handle commercial HVAC projects?
Yes, we specialize in commercial HVAC systems including light industrial applications, system retrofits, and design-build projects using our in-house sheet metal fabrication capabilities.
Are your technicians certified and insured?
All our technicians are certified professionals with Local 36 Sheet Metal Worker training, and we maintain full insurance coverage for both residential and commercial HVAC operations.
What are your service hours?
Our office operates Monday-Friday from 7:00 AM to 4:00 PM. Emergency service calls are handled during regular business hours, with weekend appointments available by request.
Do you offer maintenance agreements?
Yes, we provide customized preventive maintenance agreements for both residential and commercial HVAC systems to ensure optimal performance and extend equipment lifespan.