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Air filters

Testing Fibrous High Efficiency Filters

Fibrous high efficiency filters offer the unique ability to trap both small and large-sized particles efficiently, while allowing mid-sized particles to pass through. In tests using aerosol disbursement, particles smaller than 0.1 µm and larger than 0.4 µm were...

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Commercial Filters and Disease

It is well known that commercial filters lower the risk of diseases to both animals and humans in industrial animal-growing industries. They can also lower the risk of airborne contaminants in any commercial environment when kept clean. Commercial filters should be...

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Nanotechnology Meets Industrial Air Filters

It sounds like something out of science fiction, but industrial air filters are now incorporating nanotechnology for improved performance. Nanotechnology adjusts and manipulates matter at the near-atomic level, and it’s being explored for use in science, technology...

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Replacing Residential Air Filters

Installing replacement filters is a fairly simple process on most household HVAC systems. If you’re new to maintaining your home’s system, here’s a primer on choosing and installing replacement filters. Choosing Replacement Filters The easiest way to purchase a...

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Types of Cottonwood Filters

Throughout much of the United States during the spring and summer months, cottonwood trees produce seeds that can clog even the best filters. Cottonwood filters are engineered to fit on the air intakes of HVAC systems, cooling towers, heat exchangers and air-cooled...

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Air Quality and Commercial Filters

Commercial filters can be used in residential, commercial and industrial applications. Let's take a closer look at commercial filters in commercial or business locations, and the factors you may need to take under consideration when choosing filters for commercial or...

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Fabrics Used in Industrial Filters

Fabric filters are often used in industrial filters. Common applications include industrial filters for coal-fired boilers and energy generation plants; incinerators and waste disposal plants; pharmaceutical manufacturing; steel, cement and metal fabrication plants;...

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About Us

For over 70 years Twin City Filter has been a family business providing both filter service and filter sales. We began serving the Greater Twin Cities Metro Area and grew into a coast to coast, border to border business.

Speed, Accuracy, Quality and Value

We provide filters, custom filters and service to contractors, office complexes, condos, business parks, colleges, and other industrial, commercial and residential developments.