BioMAX HEPA Filters BioMAX 95% DOP filters bridge the gap between ASHRAE and HEPA efficiencies. Koch Filter BioMAX HEPA Filters are designed to pro...
View full detailsBioMAX HEPA Filters BioMAX 95% DOP filters bridge the gap between ASHRAE and HEPA efficiencies. Koch Filter BioMAX HEPA Filters are designed to pro...
View full detailsBioMAX HEPA Filters Koch Filter BioMAX HEPA Filters are designed to provide the highest level of filtration available for commercial and industrial...
View full detailsBioMAX HEPA Filters Koch Filter BioMAX HEPA Filters are designed to provide the highest level of filtration available for commercial and industrial...
View full detailsBioMAX HEPA Filters Koch Filter BioMAX HEPA Filters are designed to provide the highest level of filtration available for commercial and industrial...
View full detailsBioMAX HEPA Filters Koch Filter BioMAX HEPA Filters are designed to provide the highest level of filtration available for commercial and industrial...
View full detailsBioMAX V2000 filters are engineered to provide the optimum combination of efficiency and airflow. They are used in a wide range of applications, in...
View full detailsBioMAX V2000 filters are engineered to provide the optimum combination of efficiency and airflow. They are used in a wide range of applications, in...
View full detailsBioMAX V2400 Engineered to provide the optimum combination of efficiency and airflow. They are used in a wide range of applications, including phar...
View full detailsMulti-Cell Air Filters Medium & High Efficiency Extended Surface Air Filters Features: Three efficiency ranges Multiple frame and header optio...
View full detailsMulti-Cell Air Filters Medium & High Efficiency Extended Surface Air Filters Features: Three efficiency ranges Multiple frame and header optio...
View full detailsMulti-Cell Air Filters Medium & High Efficiency Extended Surface Air Filters Features: Three efficiency ranges Multiple frame and header optio...
View full detailsMulti-Cell Air Filters Medium & High Efficiency Extended Surface Air Filters Features: Three efficiency ranges Multiple frame and header optio...
View full detailsMulti-Cell Air Filters Medium & High Efficiency Extended Surface Air Filters Features: Three efficiency ranges Multiple frame and header optio...
View full detailsMulti-Cell Air Filters Medium & High Efficiency Extended Surface Air Filters Features: Three efficiency ranges Multiple frame and header optio...
View full detailsMulti-Cell Air Filters Medium & High Efficiency Extended Surface Air Filters Features: Three efficiency ranges Multiple frame and header optio...
View full detailsMulti-Cell Air Filters Medium & High Efficiency Extended Surface Air Filters Features: Three efficiency ranges Multiple frame and header optio...
View full detailsMulti-Cell Air Filters Medium & High Efficiency Extended Surface Air Filters Features: Three efficiency ranges Multiple frame and header optio...
View full detailsMulti-Cell HT Filters - Product Page Multi-Cell HT Filters Multi-Cell HT filters are designed t...
View full detailsMulti-Cell HT Filters - Product Page Multi-Cell HT Filters Multi-Cell HT filters are designed t...
View full detailsMulti-Cell HT Filters - Product Page Multi-Cell HT Filters Multi-Cell HT filters are designed t...
View full detailsMulti-Cell HT Filters - Product Page Multi-Cell HT Filters Multi-Cell HT filters are designed t...
View full detailsMulti-Cell HT Filters - Product Page Multi-Cell HT Filters Multi-Cell HT filters are designed t...
View full detailsMulti-Cell HT Filters - Product Page Multi-Cell HT Filters Multi-Cell HT filters are designed t...
View full detailsWe offer a complete selection of high-performance HVAC filters. Whether you're replacing filters in your home, office, or commercial HVAC system, you'll find trusted options in MERV 1–13, including pleated, fiberglass, washable, and specialty filters.
All filters are made in the USA and sourced from leading manufacturers like AAF Flanders and Koch Filter. Choose from standard and custom sizes to ensure a proper fit for your system—and enjoy clean air backed by over 50 years of HVAC experience.
are designed to capture airborne particles and improve system performance in a wide range of HVAC and air filtration applications.
The best way to determine if are right for your system is to check your current filter specs, system requirements, or reach out to our team—we’re happy to help you choose the correct option.
can be used in a variety of applications depending on system compatibility. Some are ideal for homes, while others are built for commercial, industrial, or specialized environments.
Replacement schedules for filters vary based on environment, usage, and filter type. Always follow manufacturer guidelines or consult your facility manager or HVAC technician for best results.
filters are available in a range of filtration levels—from basic to high-efficiency—based on your air quality goals and system requirements.
Most of our replacements are proudly made in the USA by trusted manufacturers known for quality and performance.
With nearly 20 years online and over 50 years of HVAC experience, we offer only high-quality replacement filter from leading brands—backed by real expertise and personalized support.
MERV (Minimum Efficiency Reporting Value) measures how well an air filter captures particles. A higher number means better filtration—but it must still be compatible with your HVAC system. Here's a breakdown to help you choose the right filter for your home or business.
Basic protection. Captures larger particles like dust, lint, and pollen. Minimal airflow resistance. Best for older systems or basic residential use.
✔ Highest airflow
✘ Does not trap fine particles
Great balance of airflow and filtration. Captures mold spores, dust mites, pet dander, and pollen. Most common choice for residential HVAC systems.
✔ Good airflow
✔ Effective for everyday air quality needs
Enhanced dust-holding capacity and improved particle removal compared to MERV 8. Traps finer particles like mold spores, hair spray, and fabric fibers.
✔ More efficient than MERV 8
✔ Still maintains strong airflow
Captures smaller particles like auto emissions, smoke, and some airborne bacteria. Ideal for homes with pets or allergy concerns. Moderate impact on airflow.
✔ Great for allergies
✘ May reduce airflow in older systems
Highest residential-grade filtration. Captures airborne bacteria, tobacco smoke, and fine particles. Recommended for asthma, smoke exposure, or medical-grade needs.
✔ Best indoor air quality
✘ Not suitable for all systems without airflow evaluation
To find the correct replacement, measure the length, width, and depth of your existing filter. Most filters are labeled with a nominal size (like 16x24x1), which is a rounded number—actual measurements are often slightly smaller. Accurate sizing ensures a proper fit and helps maintain airflow efficiency.
Turn off your system and remove the existing filter. Look for printed dimensions on the frame—this is usually the nominal size.
Use a tape measure to get exact dimensions (length × width × depth). Round down to the nearest 1/8" if needed—example: 15-5/8" × 23-5/8" × 3/4".
If your measurements don’t match a standard size, we offer custom filters made to your exact dimensions.
{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}
