6 Best Air Compressor Filter Dryer in 2022

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The best air compressor filter dryer is the best way to clean your air compressor. The best water separator for air compressors removes moisture and contaminants from the compressed air stream. 

Many people think that they’re dirtier than they would be without a filter, but this couldn’t be further from the truth! Water is one of the most common things found in an industrial environment – especially in areas where humidity or rain are plentiful. 

Harsh chemicals like oil and grease also find their way into compressed air systems, which can cause serious problems down the road if left unchecked. It’s important to take care of your equipment, so make sure you invest in a good filter dryer today!

Best Air Compressor Filter Dryer

Product Name

Port Size

Flow Rating

Operating Pressure

Filter Rating


NANPU 3/8" NPT Compressed Air Filter Regulator Lubricator Combo Water/Oil Trap Separator

 3/8” NPT


0-145 PSI

5 Micron

DeVilbiss 130525 QC3 Air Filter and Dryer

3/8" NPT



0.1 Micron

3 stage, heavy-duty industrial grade filter regulator coalescing desiccant dryer (3/4" npt, manual drain)

 ¾” NPT

100 SCFM

0-215 PSI

0.01-5 Micron

NEIKO 30252A Water and Oil Separator

 ¼" NPT


0-90 PSI

5 Micron

1/2" NPT MID FLOW Filter Regulator

½” NPT

105 SCFM

0-150 PSI

0.01-5 Micron

Heavy-duty high flow compressed air-in-line particulate filter with a metal bowl

 ¾” NPT

140 SCFM


5 Micron

Best Air Compressor Filter Dryer Review

1. NANPU 3/8″ NPT Compressed Air Filter Regulator Lubricator Combo Water/Oil Trap Separator

NANPU Compressed Air Filter Regulator Lubricator Combo Water/Oil Trap Separator is an excellent product for anyone with a high-pressure tool or who has compressors.

It can help solve the moisture problem in your airlines by removing water from the compressed air system and lubricating your tools to increase their life span. The product also has a 3/8 in. desiccant dryer with an oil removal filter. 

This unit comes at a very affordable price, so it’s worth checking out if you are looking for the best air compressor filter dryer.

Best Air Compressor Filter Dryer

About This Item

  • Manufacturers: NANPU
  • Port Size: 3/8â€
  • Material: Aluminum
  • SCFM: 60
  • Operating Pressure: 145 PSI

Key Features

Airline oil separator– It is one of the best water separators for air compressor on the market now.
Budget – The product is budget-friendly and costs around 100 dollars.
Pumping capabilities – It is a high-pressure grease pump that provides a great pumping experience; also, the product comes with a pump gauge.


  • Cheap
  • Efficient
  • It is an oil-free compressor
  • Zero-emission


  • Possibility to leak around the housing

2. DeVilbiss 130525 QC3 Air Filter and Dryer

DeVilbiss 130525 QC Filter and Dryer is a great product to look into if you’re looking for the best cheap lubricant to buy online. This filter regulator combo comes at an extremely affordable price, so it’s worth checking out if you want the best small oil-free compressor. It comes with: a pneumatic grease gun and a portable electric impact wrench.

The design of this unit allows you to easily replace your old filters without having any problems or leaks. As well as being able to separate moisture from the system, DeVilbiss 130525.

DeVilbiss 130525 QC3 Air Filter and Dryer

About This Item

  • Manufacturers: DeVilbiss
  • Port Size: 3/8â€
  • Filter Rating: 0.1 Micron
  • Weight: 1.4 pounds

Key Features

Air Compressor Moisture Filter comes with an air compressor filter to remove the moisture while performing tasks.
Oil-free – The product is oil-free, which saves the cost of buying oil for the compressor.
Useability – It is a universally fitting unit that you can use almost anywhere.


  • It has 30stage filtration
  • Pressure drops of 2Psi
  • Full air control
  • Filter cartridge maintenance is easy


  • The airline water trap might need frequent changing

3. 3 stage, heavy-duty industrial grade filter (3/4″ npt, manual drain)

It is the best water separator for air compressor because it has the best water separator elements with the highest dirt holding capacity and best water separator pressure drop.

It is made with top-quality material that ensures long service life, high strength & durability at extreme temperatures (-40°F – 212°F).

The cyclone construction provides easy access to all internal components without removing rotating assemblies or disassembling housing sections, thus minimizing downtime in most applications. Solid cast iron manifolds are anodized inside and out for corrosion protection, maximum flow efficiency & the best water separator for best-compressed air quality.

It is made with high impact resistant paint; powder coat painted steel base & stainless-steel housing to provide long-lasting protection against corrosion and rusting in most conditions. The motor enclosure provides the best protection from dust, moisture, or other contaminants that may be found in the job site environment.

It has no moving parts outside of the tank, so it cannot plug up like centrifugal style filters can plug when running dry due to lack of internal backflow check valve design, increasing overall life expectancy over traditional filtration systems. It self-cleans – never needs manual cleaning or maintenance!

3 stage heavy duty industrial grade filter

About This Item

  • Manufacturers: THB EDGE
  • Weight: 6 pounds
  • Port Size: ¾”
  • SCFM: 100
  • Operating Pressure: 215 PSI

Key Features

3 stage filtration – It provides a three-stage water filtration for maximum performance.
Input – the unit uses 225 Psi input in which regulates your incoming and outgoing air pressure.
Element removable – It removes 95% moisture and comes with 5-micron elements.


  • It comes with a 5-micron brass element
  • A polycarbonate bowl with a 5-ounce metal bowl
  • The ¾” NPT filter regulator lubricator provides smooth operations
  • Removes 95% of the moisture in the initial stage


  • Possibility of leaking

4. NEIKO 30252A Water and Oil Separator

It has the best separation efficiency and high dirt holding capacity. It has a large tank which means more moisture will be removed before the first drop of clean compressor output enters your work zone or the assembly line, thus improving the best-compressed air quality.

This also reduces system downtime due to repeated product changeovers by eliminating manual cleaning and minimizing scheduled maintenance required between each cycle with its automatic drain feature without any need for electricity or moving parts!

This neiko 30252a Water Separator helps you save money on costly repairs associated with low-quality filtration systems that can cause damage to sensitive equipment such as computers, medical instruments, air purifiers, and other best-compressed air dryers.

NEIKO 30252A Water and Oil Separator

About This Item

  • Manufacturers: NEIKO
  • Port Size: ¼”
  • Operating Pressure: 90 PSI
  • Filter Rating: 5 microns

Key Features

Performance – It traps the water vapor and dust from maximum performance.
Design – The unit has a transparent design that allows you to monitor everything from the ground up.
Usability – it is very straightforward; you have to press the valve which ejects waste.


  • Easy to use
  • Provides 90 Psi
  • Removes water vapor and dust
  • Transparent design makes it easy to monitor


  • The rubber piece below needs improvement

5. 1/2″ NPT MID FLOW Filter Regulator

This best cheap one-half-inch NPT mid-flow filter regulator has a metering range of 0 to 100 psi. An adjustable pressure control device provides the flexibility needed for many varied applications around your facility or job site. 

The unit regulator can be used with any equipment, tool, or accessory that requires regulated airflow between 50 and 150 psi (300 kPa). The brass body ensures excellent corrosion resistance for extended service life in harsh environments, while its carbon steel diaphragm assures dependable performance over years of use even under extreme conditions. 

It comes outfitted with standard female pipe threads on both sides so you can quickly connect it to existing lines.

1-2_ NPT MID FLOW Filter Regulator

About This Item

  • Manufacturers: All Tool Depot
  • Port Size: ½”
  • CFM: 105
  • Operating Pressure: 150 PSI

Key Features

Input – the unit removes moisture, water, vapor, and oil with 150 Psi.
Filtration uses a 5-micron element and removes 95% at stage one, 0.01-micron element removes 99.98%, and stage three provides super clean air. 
Usability – The product is a manual draining system which means you have full control over drainage, and also, the bowls are transparent.


  • 105 CFM
  • 150 PSI
  • Manual drainage
  • Visible sight glass along with the bowl


  • The drainage valve is faulty

6. Heavy-duty high flow compressed air-in-line particulate filter with a metal bowl, 3/4″ npt ports, 140 cfm, visible sight glass, 5-micron element

It is the best heavy-duty high flow compressed air-in-line particulate filter with a metal bowl and the best water separator for best-compressed air quality; the best oil removal has an operating pressure of 250 psi. 

It is a single-stage standard filtration device that provides the basic level of protection your applications require to meet OSHA requirements and industry standards. The stainless-steel body ensures excellent corrosion resistance, while its carbon steel diaphragm assures dependable performance even under extreme conditions! 

This best dryer regulator comes outfitted with two male pipe threads on either side. You can quickly connect it to existing lines without any need for adaptors or special attachments, making installation quick and easy, not requiring fittings! It prevents contamination by providing visibility via sight glass.

Heavy-duty high flow compressed air-in-line particulate filter

About This Item

  • Manufacturers: T-H-B CO EDGE INDUSTRIAL
  • Port Size: ¾”
  • CFM: 140
  • Filter Rating: 5 microns
  • Operating Pressure: 251 PSI

Key Features

Filtration – The unit comes with a 5-micron element that removes 95% of moisture, contaminants, and debris.
Input – It comes with 250 PSI max input, and the max output pressure is 215 PSI.
Visibility: You are getting a 5 ounces metal bowl with a 140 SCFM flow rate and a visible sight glass.


  • Removes most of the debris and moisture
  • Output is 215 PSI
  • Visible sight glass
  • 140 SCFM flow rate


  • Air sometimes leaks while draining

Buying Guide

Choosing the best air regulator and filter for an air compressor is not that simple as there are so many products on the market. Here is what you should look for when choosing the best air compressor filter dryer for your preference –

Drain Type

Draining is very important when it comes to buying an air compressor unit. Right now, there are three drainage systems available on the market.

One is a manual, which requires you to press the valve to drain it by yourself manually. The second one is semi-automatic which drains when there is no pressure; moreover, it closes when the air starts passing. Lastly is the automatic one, which by name you can guess drains itself when the bowl is ½ way full.

Load Capacity

The water separator is what gets all the pressure from the air compressor. So, it needs to have the capacity to handle the load of the air compressor. So, look at the box while buying. 

Bowl Quality 

The bowl withstands a lot of pressure, and that is why it should be of the highest quality possible. A metal bowl is much more durable than a regular plastic one for obvious reasons.

Using and Maintenance Guides


Step 1 – the tank and inlet need to be at a good distance.

  • The air inside cools and then passes through the filter; that is why the tank and inlet should have a good gap of around at least 50 feet.

Step 2 – Wall mounting 

  • First, you will have to connect the L bracket with the filter and screw those in tightly.
  • Then take a solid piece of wood and place the filter on top to screw that in place.
  • After that, the whole thing is ready to be mounted on the wall.

Step 3 – Tank hose connection

  • You will take the tank hose and place it in the filter’s inlet and secure that in place. 

Step 4 – Run a drill 

  • Now connect the air tool hose with the end of the filter.
  • After that, give it a test run and see if everything is working properly.

Maintenance Guide

Maintaining that unit is very important after setting up the machine. Many people tend to slip when it comes to that; moreover, the device will not work properly without proper maintenance. 

Here is how you should do it –

  • Have a maintenance schedule to keep track of when was the last time you cleaned your air compressor. Moreover, try to keep a regular check run through of cleaning and maintaining the unit.
  • Keep the machine clean from any external dust or rust as it will less pollute airflow and also help the machine stay in shape for longer. 
  • Your compressors have filters, and you should change them on a regular basis after any work.

Compressor Villa always tries to facilitate buyers purchasing decisions containing customer-friendly product articles. There is a list below from which you can get various related articles that can make your purchase decision much more worthwhile and effective.



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Some FAQs About Air Compressor Filter Dryer

A water separator is a mandatory thing to have when working or handling an air compressor. The filter separates the oil from the water, which helps in the workflow of the unit.
First, use thread tape to make the quick connector airproof. Now screw out the copular from the inlet, fit it and tighten it with a wrench. Next, you will have to place the separator in the inlet hole. After that, attach the hose tube. Finally, pin the oil-water separator on the receiver tank input.
Water separators are very cheap and making one will cost a lot more than the actual product on the market. That is why buying one is a better option than making one at home.
The first thing to do is drain the air receiver tank then use the water separator filter to remove any moisture. After that, if you wish further removal of the moisture, then refrigerate air dryers.


An air compressor prevents water build-ups in your machines and provides a satisfactory result all across the board. That is why getting the best air compressor filter dryer according to your needs is necessary. 

That was the whole purpose of creating the guide, which will help you pick the right unit and give an in-depth overview of each product.

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