Best Air compressors Online

How to Choose the Right Air Compressor

Air compressors have been around for well over 100 years and have as many uses as there are tools that use air. One reason for their popularity is because air as a resource is safe, flexible, clean and convenient.  These machines have evolved into highly reliable pieces of equipment that are almost indispensable in most of the applications they serve. Compressors can come in a wide variety of different types and sizes.

Ultimately, as with any tool, air tools and the compressors that drive them, have to save the user time and money on any given project. Most compressed air tools are more powerful and typically lighter than standard electric tools or battery powered cordless tools. They are used by virtually every industrial sector from aircraft to automobiles to dairy farming to textiles.

Best Sellers

Buy Garden Hose Connector securely online today at a great price. Garden Hose Connector available today at Best air compressors for sale online. ...Read more

Advantages and benefits of wearing Blitzu Compression Socks: Hikers, Walkers, ramblers, runners and joggers - Spend your whole day walking and running without muscle strains, cramp ? COMPRESSION THERAPY TECHNOLOGY - Provides true graduated compression to promote blood circulation and oxygen flow, prevent cramping, fatigue, swelling, help muscle recovery, spider, varicose veins and diabetic. Use them on a plane during that 9 hr flights or during that 6 mile walk. Your durable (20 - 30 mmHg) socks work with your routine. Feel the shock absorption effect instantly that really helps reduce fatigue and swelling in your lower leg! ? DESIGNED FOR EVERYDAY USE AND OUTDOOR ACTIVITIES - Bring more energy into your feet. It's perfect for jobs that require you to be on your feet a lot. It's also a must have for any leg intensive activity such as Marathon, Running, Hiking, Gym Fitness Training, Basketball, Cycling, Weightlifting and more. Perfect for extreme races and long runs! ? PROFESSIONAL HIGH GRADE QUALITY - Made of Power+ Premium Performance Fabric. A must have for men, women and elder at any age. The superior grade circular knit structure delivers 360-degree stretch for greater flexibility and durability. Stay put Cuffs & Soothing feeling at the bottom and sides of foot, with no pinching. Sleek, stylish, fashionable design with many colors available. ? BLITZU KINESIOLOGY TAPING DESIGN - The One-of-a-Kind compression socks that combine the stability of kinesiology taping with the performance of compression fabric. Perfect for Relief of varicose veins or other leg swelling issues. Support your foot, heel, arch, ankle, and calf. Use it every day, night, or both. Prevent blood clots after surgery and Fits well unlike other Dr. prescribed Stiff varieties. The toe area won't squeeze your aching toe joints. Instant comfort & support GUARANTEE! ? BUY IT NOW AND FEEL THE DIFFERENCE INSTANTLY - 100% SATISFACTION GUARANTEE- Your satisfaction is our guarantee! We Promise These Are The Most Perfect Fitting, Maximum Swelling Reducing, Highest Pain Relieving, Longest Lasting Compression Socks You Will Ever Own. If you don't absolutely love your compression socks for any reason, let us know and we'll refund your money back or send you a replacement! That is how confident we are that you will LOVE it!...Read more

Zento Deals 12V Single Trumpet Air Horn • The brand new Zento Deals single horn is designed for customers looking for a loud and Affordable air horn. The build quality is Great • POWERFUL - The Zento Deals single horn blares out a loud and powerful warning. The two durable trumpets can produce sound as loud as 150DB. The great powerful sound catches everyone's attention. • SUPERIOR QUALITY - The Zento Deals single horn is constructed out of premium quality material to ensure maximum strength and durability for long lasting usage. The Zento Deals single horn is sturdy and made of material tough enough to withstand the any weather and form of elements of blizzard. • VERSATILITY - The Zento Deals single horn can be mounted on any application that has a 12V DC power available. With a polished red compressor and shiny chrome horn they cast an eye-catching appearance on any vehicle mounted. • AFFORDABLE - The Zento Deals single horn is designed for customers looking for a loud and affordable air horn. The build quality is great and totally worth it for a very affordable price. • EASY INSTALLATION - The Zento Deals single horn is easy to install. It is flexible and portable so it has the reflexes to take from one car to another easily. The horn kit includes basic mounting hardware, hose, and relay....Read more

Buy Spectracide Weed and Grass Killer with Extended Control securely online today at a great price. Spectracide Weed and Grass Killer with Extended Control available today at Be... ...Read more

Why Purchase the New Garden Hose Quick Connector by Gorilla Easy Connect? It's the #1 Strongest ¾ inch GHT Brass Easy Connect Fitting on the Market. Durable Materials With its rus GORILLA EASY CONNECT PRODUCTS ONLY WORK WITH OTHER GORILLA EASY CONNECT PRODUCTS and should be purchased as a set STANDARD 3/4 INCH DURABLE SOLID BRASS CONSTRUCTION GHT FITTINGS fit all types of garden hoses faucets and watering devices pressure washers and garden hose connectors 200 PSI OF PRESSURE gives the Gorilla Easy Connect Fitting continuous water flow and it's a great tool to complete your garden accessories NO LEAKS make this 2-piece set (male and female) great for indoor usage and allows ease of connection for those hard to get to hose bibs; water hose and faucets 1-HANDED OPPERATION EASY TO CONNECT AND DISCONNECT especially for those with arthritis and limited hand and joint mobility...Read more

Portable Compact and Powerful Air Compressor! ? Easy to inflate car tires and other infaltables ? LCD digital display,to monitor the health of the tire pressure at any time ? ?Strong Power&Long Power Cord? - Up to 150PSI. 5 minutes to inflate a car tire R17 from 0 to 0.25bar. And just cause a little sound but comfortable. Oasser portable air compressor pump provides a 3.5m power cord that connects into the cigarette lighter which is suitable for most small and medium sized cars, SUV ?Digital Tire Gauge? - LCD screen, you can check the tyre pressure at any time, inflate tyre and protect it. Preset the tire pressure you need, the air compressor starts to work, when the tire pressure reaches the preset value, the air compressor stops working automatically(3 kinds of unit values are available : PSI, BAR and Kg/cm) ?Super LED Lights? - Oasser digital tire inflator is equipped with bright and long-lasting LED lights for easy night use, so you can see clearly while at night a dark lonely country road. The large independent LED light is convenient for your nighttime use, you must love it ?Multi-Purpose? - Oasser tire inflator comes with 3 different adaptors accessories, which makes it perfect for cars, bikes, bicycles,motorcycles, RV, SUV, ATV. Also, sports equipment basketball toys and inflatables ?Excellent Quality&Customer Service? - Durable material, waterproof, impact-resistant, beautiful and compact shape. 12-months warranty and always 24 hours satisfaction customer service...Read more

While there are many types of compressors, they all perform the same function, which is to increase the pressure and reduce the volume of a given gas such as air. The most common type of compressors work by filling a chamber with air and then reducing the chamber’s volume. These are called positive displacement compressors. They are the most widely available compressors and include reciprocating, rotary screw and rotary vane compressors.

Of all the positive displacement compressors, Reciprocating or Piston compressors are the most commonly available on the market and can be found in ranges from fractional to very high horsepower. These compressors are sold world wide by many mass marketers and a large variety of retail outlets.

Rotary compressors (Screw and Vane) and the centrifugal compressors are also commonly found but in more of an industrial/commercial environment. Normally they are operated at significantly higher horsepower and flow rates, which makes them more expensive buy and to operate. 

The following paragraphs contain some very general information on piston compressors that will allow for a more informed decision concerning the type and size of compressor being considered.

Single Stage and Two Stage Reciprocating Pumps

Reciprocating (Piston) Compressors can be widely found in two primary configurations; Single Stage and Two Stage.

Single stage air compressors work by drawing air in and subsequently compressing the air to its final pressure in single piston stroke. Single stage air compressors can attain pressures of up to 150 PSI. Typically, a single stage pump will have a higher CFM(Cubic Feet per Minute) rating than a two stage pump because every cylinder is drawing in air and compressing it with air during every rotation.

Two stage air compressors work in a very similar manner with the primary difference being that they compress the air in 2 steps or stages. During the first step or stage, air is drawn in and compressed to an intermediate pressure. After being compressed in the first stage, the air is piped, usually through an intercooler where the air is allowed to cool, to be compressed in the final or second stage. Two stage compressors are normally good for pressures up to 200psi. Two stage pumps are more efficient at higher pressures because the air is cooled between the stages.


            Displaced CFM (DCFM) is a mathematical formula that calculates the bore, stroke and rpm into a CFM figure(Bore x stroke x rpm/2200=DCFM). This figure will always be the highest CFM because this formula does not take into account variables like temperature, atmospheric pressure, humidity, friction and heat dissipation.

Another CFM term often used is Standard CFM (SCFM).  It defined as the measured flow of free air and converted to a standard set of reference conditions (14.5 PSIA, 68 Degrees F, and 0% relative humidity).

Yet another CFM term is Actual CFM (ACFM). AFCM can be determined in a number of different ways. The most common methods include measuring the volume of air that is moved through an orphic plate or measuring pump up times on large compressor tanks and running through a simple calculation. This CFM number takes in effect all the variables and will give the true output of the pump at the current working conditions (i.e. temperature, altitude, humidity, …).

Often times, CFM numbers are also shown at various pressures.  These numbers can be very useful to help determine if a compressor produces enough CFM for the desired application, but can be confusing when comparing differing pressures or volumes or different compressors.

The best way of comparing compressors is through SCFM. Since all the measurements are calculated back to a set of reference standard conditions, it levels the playing field among the multitude of different manufacturers.

Electric Motors and Horsepower

         Compressors are often rated by Horsepower(HP). As simple as this sounds, there are different variations of HP.  Some compressor manufacturers rate their air compressors by peak horsepower, also known as brake horsepower. Peak horsepower is the maximum output that a motor can produce while the motor has the start windings engaged. Peak HP can be as much as 5-7 times the rated or running HP. Under normal operating conditions, the start windings are only engaged for a small fraction of a second. Therefore, using peak horsepower as a comparison tool can be somewhat misleading since under normal operating conditions the motor only develops this horsepower during startup.  If the motor drive system causes the start winding to remain engaged for a long period of time, the motor will either overheat if it has thermal protection or fail prematurely.

Most electric motor manufacturers rate their motors by the horsepower developed after the motor has come up to its designed operating rpm’s and disengaged the start windings. This is often referred to as running or rated horsepower and is a true indication of the HP a motor can sustain over a long period of time.

Some other factors to consider when looking at motors is Duty Cycle and Service Factor.  Duty cycle is normally rated as either intermittent or continuous and is defined as the time rating under full load.   In other words can the motor run at full load horsepower continuously or only intermittently. The other of the two noteworthy factors is the Service Factor (S.F.) rating of the motor. It is defined as the percentage of rated horsepower at which the motor can safely operate (i.e. 1.15 SF = 115% of rated HP).  Higher service factors allow motors to handle more varied conditions without causing motor overheating or premature motor failure.  Examples that could cause a motor to run within its Service Factor could be caused by low voltage, higher ambient temperatures, higher startup load …etc.

Note: Many companies are now eliminating the peak HP reference and instead using SCFM as a more accurate performance indicator.

Air Compressor Buying Guidelines

            Before choosing any compressor to purchase, understanding the compressor’s uses will ensure that the machine can do the required job. Buying a compressor that is too small will waste valuable time. Buying a compressor that is way too large will waste valuable resources. (See the CFM Usage Chart)

It is worth noting that the price of a compressor cannot be based solely on the up front purchase price of the unit. The price of any item should be based on the overall cost over an extended period of time or the life of the unit. Inexpensive units are designed to be disposable, like lighters.

The questions that need to be answered are:

1.)   What is the maximum required operating pressure?

This will determine if a Single Stage or Two Stage compressor will be needed

2.)   What is the maximum required CFM usage?

      Add up all of the air tools that are to be used at the same time.  When looking at the compressor, add approximately 30% to the determined CFM number. This will allow for a reasonable buffer against unknown or uncommon compressor usage.

Do not simply add up all of the air tools that will be used throughout the work day since this will produce an inflated CFM number and require the purchase of an overly large compressor.

3.)   Does the machine need to be portable or stationary?

Determine whether or not the unit will need to be moved around your facility or work site regularly or if it will be a stationary unit. This will aid in determining other factors such as size and weight. Higher pressures and volumes will require the unit to be larger in size and heavier in weight since horsepower requirements, pumping systems, chassis construction, electrical components, etc... will have to be larger to accommodate these increases.

4.)   What type of drive system is needed? Electric Motor or Gasoline Engine?

Knowing the environment that the compressor is to be used in will determine what type of drive system the machine will need.  If there is always electrical power available, then the drive system should be an electric motor since they are significantly less expensive to buy and run and require less overall maintenance. If electrical power is not always available then the convenience of a gasoline engine driven compressor will be the way to go.  They offer the best in portability and work area flexibility.

5.)   What receiver tank size will be needed?

The size of the compressor tank, usually measured in gallons, should be determined by the overall type of usage.  If the usage is in short quick concentrated bursts, such as an air nailer, then a small tank size can be used. If the unit is to sustain long periods of usage, such as a board sander or impact wrench, a larger tank size will be necessary.

Special Offers

$1,156.07 $1,049.99

The Industrial Air 60 gallon super hi flo single stage compressor gives the user 18 CFM at 90 PSI and 155 PSI max pressure for optimum tool performance. The low profile 60 gallon A 240 volt heavy duty induction motor 5.7 Running horsepower UL and CSA Certified Thermal Overload Protection System Motor (TOPS) potects motor from high voltage fluctuations Full metal belt guard...Read more

$34.59 $31.41

RAC X is designed with the contractors' needs in mind, these job-specific spray tips give you long life, a superior fan pattern, and a high-quality finish. A wider spray fan means fewer passes with the gun and better productivity All RAC X SwitchTips include the exclusive OneSeal that can be installed with no tools The superior locking tab tip design ensures that the tip stays securely in the guard...Read more

$12.03 $10.99

8' Braided air hose with couplings. The coupling at the airbrush end is fitted with an 'O' Ring to prevent air leaks. 100 psi maximum. Braided air hose Fits Paasche pen type airbrushes Has 1/4 NPT fitting on compressor end...Read more

$115.09 $106.42

The single arm design offers stability and versatile adjustments allowing for the hose reel to swivel or maintain a locking position for rough daily use. Directional non-snag rolle SPRING INTO ACTION: Spring driven drum automatically retracts hose reel for quick easy clean up! LOCK AND GO: Locking ratchet lets maintain desired hose length, never worry about not having enough hose again before getting into a tight space. ENOUGH HOSE AROUND: 5/16in. x 32ft. retractable rubber hose rated at 300 PSI MAX, 3ft lead hose UP HIGH DOWN LOW...: Can be mounted on the wall, ceiling, or floor for maximum space, safety and efficiency! LESS WEAR: Directional non-snag rollers to help reduce wear and tear on the hose and reduces wear on the spring!...Read more

$80.52 $73.95

Hose fittings connect, control, change the direction of, and terminate the flow in piping and hose systems. They are made of brass, stainless steel, galvanized steel, and other mat National Pipe Thread (NPT) male connector to connect a hose to a National Hose (NH) female threaded end Male threads on both ends for connecting a pipe to a hose Aluminum for resistance to corrosion and chemicals Rocker lugs for use with a rocker lug wrench...Read more

$40.31 $36.97

The Guardair U80LJ006AA2 Ultra Whisper Jet Short Trigger Air Gun with 6-Inch Extension incorporates exclusive Whisper Jet nozzle technology to provide superior thrust at reduced no Cast aluminum body with premium cushion grip Contoured ergonomic trigger Adjustable hanging hook Aluminum Whisper Jet nozzle 3/8-inch FNPT inlet...Read more