IQS Directory provides a comprehensive list of HVAC filter manufacturers and suppliers in Illinois. Use our website to review and source top HVAC filter manufacturers with roll over ads and detailed product descriptions. Find HVAC filter companies that can design, engineer, and manufacture HVAC filters to your companies specifications. Then contact the HVAC filter companies through our quick and easy request for quote form. Website links, company profile, locations, phone, product videos and product information is provided for each company. Access customer reviews and keep up to date with product new articles. Whether you are looking for manufacturers of electrostatic filters, inline filters, foam filters, or customized HVAC filters of every type, this is the resource for you.