How Our Clients are Innovating During COVID-19 | Filtration Products – David Dilling

David Dilling Filtration Products

Since 1995, Filtration Products has manufactured air filters for HVAC systems. The company is owned by David Dilling. Other companies in San Antonio resell air filters, but Filtration Products is the only manufacturer of filters in South Texas. The company’s products are used in professional office buildings, retail centers, hotels, restaurants, and hospitals, and are sold to distribution companies and air conditioning service companies as well as individual homeowners. The pleated air filters are of high quality and can be manufactured in any size needed for every business application.

Dilling came to the SBDC initially for help with his website and marketing his business. Senior Business Advisor Crystal Darby helped with updates to his website and assisted him in obtaining publicity in the San Antonio Express-News about his home delivery service. Crystal also helped him prepare for government contracting. She researched the GSA pricing of his competitors and helped him put together a price list which he has used for several government bids, including the City of San Antonio and CPS Energy.

With the onset of the COVID-19 pandemic, Dilling has had to rapidly innovate. His new focus as a result is offering their same quality air filter that they have been manufacturing for government, commercial, and residential facilities for the past 25 years and turning them into inserts for face masks.

“We are used to protecting hospitals and military bases from dust, allergens, and other airborne contaminants,” says Dilling. “Now we can give individuals that same protection, just in a smaller, portable size.”

Filter inserts convert cloth masks to M14 / 95 protection. They are 5-inches by 6.75-inches, the right size to slip into a pocket or lining in a face mask.

Filters4Air has donated filters locally in San Antonio, while also offering individual and wholesale options. “Our service in San Antonio is contact-less, and we ship nationally as well. We take the stress away from measuring air filters, going to the store, and searching shelves,” Dilling says.

For more information on Filtration Products and their services visit

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