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Educational Resource
Filter Selection
Guide

Not sure which filter is right for your application? Use our guide and interactive selector to find the right product category for your facility or system.

How It Works
4 Steps to the Right Filter
01

Identify Your Application

Are you filtering air in an HVAC system, protecting hydraulic fluid, removing contaminants from a liquid process, or handling gas? The application determines the entire filter category.

02

Know Your Contaminant

Particulates, moisture, gases, bacteria, varnish, and chemicals all require different media and designs. The smaller or more hazardous the contaminant, the higher the efficiency you'll need.

03

Check System Requirements

Flow rate, pressure, temperature, and fluid viscosity narrow your options significantly. For air systems, also consider your HVAC fan's ability to handle added resistance from a higher-efficiency filter.

04

Match Efficiency to Need

Higher efficiency isn't always better — it costs more, loads faster, and may restrict flow. Choose the minimum efficiency that meets your air quality goals, compliance requirements, or equipment protection spec.

Interactive Tool
Find Your Filter
Filter Selector — Answer 2–3 Questions
Question 1 of 3
What are you filtering?
Air HVAC, ventilation, cleanrooms, dust collection
Hydraulic / Lube Oil Hydraulic systems, gearboxes, turbines
Liquid / Process Fluid Water, coolants, chemicals, process fluids
Gas / Compressed Air Natural gas, pipeline, compressed air systems
Question 2 of 3
What type of air filtration do you need?
HVAC / Ventilation Commercial, industrial, or residential air handling
Dust, Mist & Fume Industrial capture at the source — welding, grinding, mist
Cleanroom / Critical Space Healthcare, pharma, semiconductor, food processing
Molecular / Gas-Phase Odors, VOCs, corrosive gases, chemical contaminants
Question 2 of 3
What is your primary need?
Filter Housing / System I need a complete filter assembly or housing
Replacement Elements I already have a housing and need filter elements
Breathers Protect reservoirs and tanks from airborne contamination
Oil Analysis / Testing Test kits, particle counters, fluid condition monitoring
Question 2 of 2
What best describes your application?
Process / Industrial Liquid Water, coolants, chemicals, general liquid filtration
UV Disinfection Biological contamination in water or liquid streams
Question 2 of 2
What type of gas application?
Natural Gas / Pipeline Gas processing, pipeline protection, pigging equipment
Compressed Air Point-of-use, inline, or system-level compressed air filtration
Question 3 of 3
What level of air quality do you need?
Basic Protection MERV 1–8 — dust, pollen, large particles
Commercial / Industrial MERV 9–12 — mold, fine dust, welding smoke
High Efficiency MERV 13–16 — hospitals, pharma, sensitive environments
HEPA / Critical ISO Class cleanrooms, surgical suites, compounding
Question 3 of 3
What pressure range is your system?
Low Pressure Return lines, offline filtration, in-tank assemblies
Medium Pressure Up to ~1200 PSI — charge pump, pilot circuits
High Pressure Up to 6000 PSI — inline, base-mount, critical circuits
Continuous / No Shutdown Duplex systems for uninterrupted operation
Recommended Categories
Standard HVAC Air Filters (MERV 1–8)

For general dust and particle protection in residential and light commercial settings. These filters are cost-effective, widely available, and suitable for most standard HVAC systems without adding excessive airflow resistance.

Disposable Panel Filters
Cost-effective, MERV 1–8
Filter Rolls & Pads
Bulk media, custom cuts
Poly-Ring Panels
Durable polyester panels
Washable Filters
Reusable, long service life
Recommended Categories
Commercial / Industrial Air Filters (MERV 9–12)

For commercial buildings, manufacturing facilities, and environments with finer particulate concerns like mold spores, fine dust, and welding smoke. These filters offer a strong balance of efficiency and service life.

Pleated Filters
MERV 8–12, extended surface
Pocket (Bag) Filters
High efficiency, long life
Rigid Box Filters
MERV 11–15, compact
Recommended Categories
High Efficiency Air Filters (MERV 13–16)

For hospitals, laboratories, pharmaceutical facilities, and sensitive environments requiring fine particle capture including bacteria, virus carriers, and combustion byproducts. Verify your system can handle increased static pressure.

Pocket (Bag) Filters
MERV 13–15 options
Rigid Box Filters
MERV 14–16, various configs
HEPA Filters
99.97%+ efficiency
Recommended Categories
HEPA & Cleanroom Filtration

For critical environments requiring ISO-classified air cleanliness. HEPA filters capture 99.97% of particles at 0.3 microns and are required in surgical suites, cleanrooms, compounding pharmacies, and other critical spaces.

HEPA Filters
H13–H14 rated
Ceiling HEPA Systems
Cleanroom ceiling integration
HEPA Exhaust Systems
Exhaust & containment
Ceiling HEPA Panels
Modular cleanroom panels
Recommended Categories
Dust, Mist & Fume Collection

For capturing airborne contaminants at or near the source in manufacturing, welding, grinding, and machining environments. These systems and filters are designed for high dust loading and demanding industrial duty cycles.

Dust Collection Systems
Complete systems
Replacement Filters
Elements & cartridges
Ambient Air Cleaners
Room-level air cleaning
Mist & Fume Systems
Metalworking fluids & fumes
Recommended Categories
Cleanroom & Critical Space Filtration

For controlled environments requiring verified air cleanliness per ISO 14644, USP 797/800, or ASHRAE 170. Contact our team for application-specific guidance on filter selection and certification requirements.

Cleanroom & HEPA Systems
All cleanroom products
HEPA Filters
H13–H14, various sizes
Testing & Certification
Hood & room certification
Recommended Categories
Molecular / Gas-Phase Filtration

For removing odors, VOCs, corrosive gases, and chemical contaminants from airstreams using activated carbon and other sorbent media. Used in museums, data centers, wastewater, industrial exhaust, and sensitive manufacturing.

All Molecular Filtration
Full category
Carbon Bulk Fill Panels
Refillable carbon panels
Carbon Box Filters
Rigid carbon filters
Bulk Carbon Media
Loose fill carbon
Recommended Categories
Low-Pressure Hydraulic Filtration

For return-line, offline, and in-tank filtration applications. These assemblies protect fluid in the reservoir and handle fluid returning from actuators and motors before it cycles back through the pump.

Low Pressure Housings
Return-line assemblies
In-Tank Housings
Reservoir-mount assemblies
Recommended Categories
Medium-Pressure Hydraulic Filtration

For charge pump discharge, pilot circuits, and transmission protection up to 1200 PSI. DFE-rated elements available for validated performance under dynamic flow conditions.

Medium Pressure Housings
Up to 1200 PSI
Replacement Elements
DFE-rated options available
Recommended Categories
High-Pressure Hydraulic Filtration

For inline and base-mounted filtration in critical high-pressure hydraulic circuits up to 6000 PSI. Multiple housing series available to match flow rate, port size, and mounting configuration.

High Pressure Assemblies
Up to 6000 PSI
Replacement Elements
ICB & DFE-rated options
Recommended Categories
Duplex Filter Systems

For critical systems that cannot be shut down for filter changes. Duplex assemblies allow you to switch between filter chambers while the system stays online — essential for continuous process applications.

Duplex Housings
High & low pressure options
Recommended Categories
Breathers

For protecting hydraulic reservoirs, gearboxes, and tanks from moisture and particulate ingression through the vent. Available in standard, desiccant, and spin-on styles to fit virtually any application.

All Breathers
Full breather category
Des-Case Breathers
Industry-leading desiccant
Recommended Categories
Oil Analysis & Field Services

For monitoring fluid cleanliness, detecting varnish and contamination, and getting expert guidance on system condition. ISO code particle counters, patch test kits, and lab analysis programs available.

Test Kits & Field Services
All testing products
Recommended Categories
Hydraulic Replacement Elements

High-performance replacement elements compatible with major OEM housings. DFE-rated, ICB ion charge bonding, and Turbo-TOC options available for enhanced performance beyond standard elements.

Replacement Filters
DFE, ICB, Turbo-TOC
Recommended Categories
Liquid Filtration

For filtering water, coolants, chemicals, and industrial process fluids. Filtech carries liquid filtration systems and replacement filters for a wide range of industrial liquid applications.

Liquid Filtration Systems
Complete systems
Liquid Replacement Filters
Filter elements
Recommended Categories
UV Ultraviolet Disinfection

For inactivating bacteria, viruses, and other biological contaminants in water and liquid streams without chemicals. UV systems are used in healthcare, food processing, laboratory, and water treatment applications.

UV Disinfection Systems
Complete UV systems
Replacement Lamps
UV lamp replacements
Recommended Categories
Gas Processing Filtration

For protecting compressors, meters, and downstream equipment from liquids, solids, and aerosols in natural gas and other gas processing applications. Includes pipeline pigging and field consultative services.

Gas Processing Systems
Complete systems
Replacement Filters
Gas filter elements
Pipeline Pigging
Pigging & equipment
Recommended Categories
Compressed Air Filtration

For removing oil, water, and particulates from compressed air systems to protect pneumatic equipment and processes. Includes inline filters, air intake filters, and dryers and desiccants.

Compressed Air Systems
Complete systems
Air Intake Filters
Compressor intake protection
Dryers & Desiccants
Moisture removal

Still Not Sure? We Can Help.

Our team works with facility managers and engineers every day to match the right filter to the application.

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