Koch Filter: American-Made Commercial HVAC Filtration
When commercial systems run hardest, facilities reach for Koch. A look at the American-made workhorse behind hospitals, data centers, and cleanrooms — and how to choose the right line.
Koch Filter: American-Made Filtration Built for Peak Season
When commercial systems run hardest, facilities reach for Koch. A look at the American-made workhorse behind hospitals, data centers, and cleanrooms — and how to pick the right line.
4.8★ · 1,000+ Reviews | Authorized Koch dealer since 2006
Peak summer is when commercial HVAC earns its keep. Systems run around the clock, filters load faster, and the last thing any facility manager wants is a stockout or a blinded final stage in the middle of a heatwave. It's exactly the season that separates dependable filtration brands from the rest — and it's a big part of why so many facilities specify Koch Filter. Here's an honest look at who Koch is, which lines fit where, and why their American-made catalog is a peak-season favorite.
Key Takeaways
- Koch Filter is American-made, family-founded in 1966 and manufactured at four U.S. plants.
- The Multi-Pleat line is the commercial workhorse — MERV 8 to 13 pleated panels for everyday duty and pre-filtration.
- Bag, rigid, and BioMAX HEPA lines handle high-efficiency final stages and critical clean-air environments.
- Peak-season stocking matters: we ship Koch plant-direct from the nearest facility to keep lead times short.
- Custom sizes to 1/8" mean odd housings and retrofits are never a dead end.
Who Is Koch Filter?
Koch Filter Corporation was founded in 1966 and is headquartered in Louisville, Kentucky. It's a family-founded, American-made manufacturer that has spent more than 50 years engineering and building HVAC filtration in the United States — growing from a single production line into one of the most respected names in commercial, industrial, and cleanroom filtration. Today Koch produces out of four U.S. plants (Louisville, KY; Houston, TX; East Greenville, PA; and Mira Loma, CA), which is a real advantage when lead time matters.
Koch filters are specified across some of the most demanding environments there are: hospitals, pharmaceutical manufacturing, semiconductor cleanrooms, automotive paint booths, data centers, federal facilities, and schools. When clean air protects people, processes, and expensive equipment, Koch is a name that shows up on the spec sheet. RememberTheFilter is an authorized Koch Filter dealer — every Koch filter we sell is sourced through authorized distribution, with no relabels or overseas knockoffs.
The Commercial Workhorse: Multi-Pleat
For most commercial HVAC systems, the everyday filter is a pleated panel — and Koch's Multi-Pleat line is the workhorse of the catalog. These extended-surface pleated panels come encased in a moisture-resistant beverage-board frame, offer high dust-holding capacity, and are engineered for low resistance to airflow, which matters most when your system is running flat out in summer.
Multi-Pleat XL8, XL11 & Green 13
The Multi-Pleat family spans the residential-to-commercial range in familiar MERV steps. The Multi-Pleat XL8 (MERV 8) is a strong upgrade from basic disposable or MERV 6 filters, popular in offices, labs, and hospitals. The XL11 (MERV 11) steps up initial efficiency for finer particles. And the Multi-Pleat Green 13 (MERV 13) is the top-tier pleated option — efficient enough to contribute toward LEED points in green-building projects, and a common choice for healthcare and higher-IAQ specs.
In staged systems, these pleated panels double as pre-filters, shielding your more expensive secondary and HEPA stages from large debris and premature blinding — which stretches the life of your costliest filters.
When You Need More: Bags, Rigid & HEPA
Larger air handlers usually pair a pleated pre-filter with a high-efficiency final stage, and Koch's catalog covers every step up.
The Multi-Sak bag filter is an extended-surface pocket filter used in tens of thousands of commercial and industrial systems — from hospitals and universities to sports arenas — thanks to its low pressure drop and wide efficiency range. Rigid and mini-pleat lines like Multi-Cell, Multi-Flo, MicroMAX, and the V-bank DURAMAX retrofit handle final-stage duty in commercial air handlers where a rugged, moisture-impervious frame keeps its shape under heavy peak-season airflow.
At the top of the catalog sits BioMAX HEPA — the highest level of filtration Koch offers, available at 99.97%, 99.99%, and 99.999% efficiency on 0.3-micron particles, in UL-classified metal or particle-board cell sides. It's the line hospitals, cleanrooms, and pharmaceutical plants rely on. Because HEPA and specialty builds are spec-driven, we quote those to your requirements — send us your model, size, and grade for a quote.
| Koch Line | Type | Best Role | Rating |
|---|---|---|---|
| Multi-Pleat XL / Green 13 | Pleated panel | Everyday duty & pre-filtration | MERV 8–13 |
| Multi-Sak | Extended-surface bag | High-efficiency final stage | Medium–high efficiency |
| Multi-Cell / DURAMAX | Rigid / V-bank | Final stage in AHUs | High efficiency |
| BioMAX HEPA | HEPA cell | Critical clean-air environments | 99.97–99.999% |
| Industrial Cartridge | Pulse-clean cartridge | Dust collection / gas turbine | Heavy-duty |
Peak-season reality: during a national heatwave, demand for commercial filters spikes and mid-season delays become a real risk. Because Koch runs four U.S. plants, we ship most orders plant-direct from the facility nearest you — keeping lead times short exactly when you can't afford a gap. If you run a multi-property or high-volume program, don't wait for a stockout to reorder.
How to Spec the Right Koch Filter
- Identify the stage: pre-filter, everyday pleated, high-efficiency final, or HEPA.
- Confirm the MERV (or HEPA grade) your system is designed to handle.
- Check housing type — panel slot, side-access bag, front-load rigid, or HEPA cell.
- Measure actual dimensions and depth; don't assume nominal fits.
- Standardize part numbers across like units to simplify reordering.
- For peak season, stock ahead so a hard-running system never waits on parts.
Shop Koch Filter — Plant-Direct
From Multi-Pleat pleated panels to bags, rigid cells, and BioMAX HEPA — the American-made lines facilities trust. Need volume pricing or a spec matched to your housing? Request a quote.
Koch for Homes, Too
The Multi-Pleat line isn't only for rooftops. In 1", 2", and 4" depths across MERV 8, 10, 11, and 13, it's equally at home in residential and light-commercial systems. If you're upgrading a home HVAC system, a MERV 11 pleated filter is the popular step up for cleaner indoor air, with MERV 13 for allergy, smoke, or higher-IAQ needs.
Not every job calls for a premium commercial line, though. For value-focused everyday filtration, our own PrimeShield filters deliver dependable pleated performance at a friendlier price — a smart pick for single-stage residential and light-commercial systems.
What If Your Size Isn't Standard?
Older buildings and retrofits often have filter slots that don't match a stock size, and a loose filter lets air bypass the media. Koch offers non-standard pleated and panel sizes in 1/8" increments, and for anything else, our Exact Filters® custom program builds to your exact dimensions down to 1/8" so the filter seals and performs as designed.
Frequently Asked Questions
Is Koch a good filter brand?
Yes. Koch Filter Corporation is a family-founded, American-made manufacturer operating since 1966, with a catalog specified across hospitals, cleanrooms, data centers, and schools. It's known for engineering-first design and dependable performance under demanding conditions.
Are Koch filters made in the USA?
Yes. Koch is American-made, headquartered in Louisville, Kentucky, and manufactured at four U.S. plants. That domestic footprint also helps keep lead times short during peak demand.
What's the difference between Multi-Pleat and BioMAX HEPA?
Multi-Pleat is Koch's pleated panel line (MERV 8–13) for everyday HVAC and pre-filtration. BioMAX HEPA is the highest-efficiency line (99.97–99.999% on 0.3-micron particles) for cleanrooms, hospitals, and other critical environments. They serve very different stages of a system.
Do you carry Koch HEPA and specialty filters?
Yes. We're an authorized Koch dealer and can quote BioMAX HEPA, industrial cartridge, paint-booth, and carbon lines to your specification. Send your model, dimensions, and grade for a quote.
The Bottom Line
Koch Filter is the brand to reach for when commercial performance and reliability aren't negotiable — and peak summer is the moment it pays off. To put it to work:
- Use Multi-Pleat panels for everyday commercial pleated duty and pre-filtration.
- Step up to Multi-Sak bags, rigid cells, or BioMAX HEPA for high-efficiency and critical stages.
- Scale the same line down to residential and light-commercial systems.
- Stock ahead in peak season and ship plant-direct to keep lead times short.
- Order a custom size if your slot isn't standard, so the filter seals properly.
Lock In Your Peak-Season Supply
Shop the American-made Koch catalog, or request a quote for volume, contract, or specialty needs. Free shipping on orders $50+.