Appleton Commercial HVAC Contractors
Reliable HVAC Services for Businesses in Appleton, Wisconsin
- 40+ Years of Experience
- Reliable Service
- 24/7 Emergency Repairs
Why Choose Third Coast Mechanical in Appleton, WI?
We bring years of expertise in commercial HVAC systems, delivering reliable and high-performing solutions for businesses throughout Appleton, WI

Your Trusted Contractors
Third Coast Mechanical provides top-tier, energy-efficient HVAC solutions for new construction, renovations, equipment upgrades, and custom commercial systems in Appleton, WI. Our expert team handles every aspect of design, installation, and maintenance, ensuring businesses receive reliable, high-performance climate control tailored to their needs.
With extensive industry experience and a commitment to exceptional service, Third Coast Mechanical delivers custom HVAC solutions for commercial buildings, healthcare facilities, universities, industrial sites, and manufacturing plants throughout Appleton, WI.
- Filter Replacements
- Coil Cleaning
- Refrigerant Level Checks
- Electrical Inspections
- Lubrication
- Thermostat Calibration
- System Diagnostics
- Roof Top Units (RTUs)
- Filters
- Coils
- Ducts
- Thermostats
- Controls
- Maintenance Plans
- Monthly Inspections
- Seasonal Inspections
- Emergency Repairs
- System Failures
- Unit Replacements
- Airflow Issues
- Rapid Response
- Minimize Downtime
Expert HVAC Design & Engineering in Appleton
A well-designed HVAC system is crucial for efficiency and long-term performance. Our engineering and system design services include load calculations, airflow analysis, energy modeling, and compliance with industry regulations. We integrate smart controls and automation, allowing businesses to monitor and adjust climate settings for maximum energy savings.
We also specialize in HVAC prefabrication in Appleton, WI., allowing us to pre-assemble ductwork, piping, and other critical system components off-site. This process ensures precision-engineered materials, faster installation, and reduced project costs. By fabricating components ahead of time, we streamline the construction process while improving quality and durability.


Appleton HVAC Installation & New Construction
For businesses planning new construction in Appleton, WI, we provide expert HVAC installation services tailored to your building’s specifications. Our team works closely with contractors, architects, and engineers to design and install efficient climate control solutions from the ground up. Whether you need a high-performance rooftop unit (RTU), a custom ventilation system, or an energy-efficient heating solution, we ensure seamless integration and long-term reliability.
As commercial buildings evolve, HVAC remodels and renovations are essential for improving efficiency and reducing operating costs. We specialize in retrofitting outdated systems, upgrading ventilation, and integrating modern zoning technology for precise temperature control. If your building requires a new equipment installation, we offer top-quality RTUs, packaged units, boilers, and air handlers from leading brands, ensuring maximum energy savings and performance.
Some businesses require custom HVAC solutions to meet industry-specific demands. Whether it’s a warehouse with complex ventilation needs, a hospital with strict air filtration requirements, or a retail space requiring zoning control, we tailor systems to fit your business. From temperature zoning and humidity control to specialized ventilation setups, our team ensures your HVAC system is built to support your unique operations.
New Equipment Installs
Ensuring your commercial HVAC system operates at peak efficiency starts with expert new equipment installation. Whether you’re outfitting a new construction project in Appleton, WI or upgrading to a more energy-efficient system, we provide seamless rooftop unit (RTU) installations and comprehensive HVAC solutions tailored to your building’s specific needs.
At Third Coast Mechanical, we partner with industry-leading brands like Trane, Carrier, Lennox, York, Greenheck, and AAON to deliver high-performance heating, cooling, and ventilation systems. Our expert technicians specialize in integrating smart climate controls, advanced airflow solutions, and energy-efficient technology, ensuring your commercial space remains comfortable and cost-effective for years to come.






Appleton, WI HVAC Services
Upgrading Your Commercial HVAC?
We make HVAC upgrades seamless with minimal downtime, maximum performance.

energy
efficiency

building
codes & regulations

maintenance
costs

indoor
air quality

Looking for commercial HVAC Services
near me in Appleton, Wi?
Whether you need a new HVAC system, replacement, repairs, or custom solution, Third Coast Mechanical is here to help. Contact us today for a free consultation and quote for your commercial HVAC needs in Appleton, WI.