Air compressors are used everywhere, from fuel stations to construction sites, domestic refrigerators to heating systems, workshops to factories. They play a vital role in all sorts of processes, supplying power for applications and environments where electrically powered tools can't be used because of fire and operator electrocution risks.
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So how do you choose?
There is a bewildering array of compressor choices in terms of size and power supply, from low-pressure options suitable for inflating tyres and hobby applications up to powerful, heavy-duty units used to power major manufacturing processes.
Air-powered tools are usually lighter and smaller than batter or mains powered options ' batteries and motors can weigh heavily on the hand! They're safer because they have no electrical components or mains connections, protecting the operators. If there are combustible gases or moisture in the working environment, air tools and a compressor are the safest options.
Air-powered tools are usually cheaper than the alternatives too, and air systems and easier and less costly to install than hydraulic systems. Add to these low maintenance requirements and therefore reduced downtime, the advantages are really stacking up.
Air compressors are used to transform motive power into compressed air by compressing the air into a tank then releasing this to create power. Power is then generated until the pressure in the holding tank drops to a certain predetermined level. A pressure switch then triggers the motive power source and refills the holding tank, generating more pressure.
Compressor power ratings are calculated in cubic feet per minute (CFM). All compressor-powered tools and processes will have a CFM requirement, which will be stated in the user guide. Multiplying this by 1.2 will indicate the required CFM for the compressor matched to the task, ensuring enough capacity to complete the work without overextending its capabilities and thereby reducing efficiency levels and operating life. Remember that if you're running more than one tool at once, you'll need a compressor capable of handling the combined CFM ratings of all these tools.
The same consideration should be given to choosing the tank size in order to achieve optimum performance. This is the deciding factor in how much-pressurised air the compressor can hold at any one time to power the pneumatic processes. The larger the air tank, the longer your compressor will run so choose the right tank for the job(s) at hand.
To complicate things even further, there are different types of compressors too, and it's best to speak with a specialist to decide which is right for your application. Our team of engineers is always pleased to help!
Your required flow rate will determine the size of the compressor and receiver that you will need (most tools have a stated consumption in either CFM m3/min or Litre /Sec). Don't forget that if you have multiple air tools running simultaneously, there is a multiplication factor for any additional tools and you should choose your compressor accordingly.
What level of power will your application require? See table below.
What pressure does your application require? See table below.
In other words, how often is the machine going to run? Smaller budget machines offer circa 30-40% duty, which means they typically run for just 20 minutes in every hour. 100% duty machines, such as Hydrovane and Champion screw machines, are better suited for light to medium industrial applications.
For applications such as workshops and garages where floor space may be limited, compressor footprint is a major consideration. Many of the machines available to purchase from ACE Group are compact enough to be installed on a smaller footprint.
For lighter industry applications, we understand that there might not always be a large budget for compressed air equipment. Our range includes a selection of extremely cost-effective options. We also have a finance option to allow you to spread the cost, should you wish. If you already have a machine that is out of warranty you may decide to contact us about our alternative service kits and parts when it comes to maintaining your equipment.
Do you need oil-free air? Do you need 100% dry air? All compressors produce water condensate and you may need to consider an oil-free compressor or additional auxiliary equipment such as filtration and dryers to give you the air quality your application requires. Choosing a filter is dependent upon the degree of contamination you need to remove. Talk to our specialists for advice.
The compressor you select will also depend on the electrical power you have available on your premises in relation to the electrical input required by the compressor requires. You should consider whether the machine you select will be single-phase or three-phase, how many amps the machine will draw and also the fuse size in your electrical board. We typically suggest D-rated fuses as start-up currents hugely exceed the general running current. As an example, heavy-duty compressors use a 220-volt current and require special wiring and outlets. A 220-volt compressor drawing 15 amps consumes 3,300 watts (220 volts x 15 amps).
When purchasing a compressor, the cost doesn't just stop when you buy the machine. There are maintenance costs and spares to weigh up too. Fortunately, many of our range of compressors are designed to have low maintenance requirements and costs and are efficient in operation too. ACE Group also have a team of service engineers, so we've got your ongoing maintenance covered.
By choosing a reputable distributor such as ACE Group, you will benefit from qualified advice and support during the purchasing process and into the future. If you have any questions our team are here to listen, advise and assist you, so you can be confident we will help you to select a machine that matches your needs.
For points 2 and 3 see the table below. Different air-powered tools will require different CFM and pressure. The table will help you identify the kind of power and pressure you'll need to run your tools and equipment.
Something you must consider from the start is how you plan to maintain your equipment. Some applications will have the benefit of in-house engineers who have the expertise and knowledge to maintain compressed air systems correctly, but otherwise, you may not know where to start looking for professional and reliable compressor maintenance engineers.
Fortunately, here at ACE Group, we have a dedicated Service Team able to meet all your maintenance requirements, from minor services to major overhauls.
Our team of qualified engineers has years of expertise in the field and is supported by a knowledgeable office team. Our engineers attend sites all over the UK and further afield.
Some customers choose to enter into a service contract for the many benefits involved, such as 24-hour breakdown call out ' essential where the machine plays an integral and vital role in your production processes.
In addition to this, we also have a dedicated parts department stocking up to £1,000,000 worth of spare parts and service kits to support all your maintenance requirements. Some of our more popular service kits are available to purchase online.
Installation is also something we offer in-house and our team is able to offer bespoke projects for all sizes of applications, fully managed from quote to commissioning.
ACE Group only works with industry-leading suppliers at the forefront of technological development. Our supply chain is regularly reviewed and we are certified to ISO , ensuring the highest standards of quality control.
Our online shop offers a comprehensive list of some of our most popular products, best suited to light/medium industrial and workshop applications.
If you are looking for a larger compressor then our sales team will be pleased to assist and guide you through the many options. We have a huge range of compressors, dryers and auxiliary equipment to suit every application, and our sales consultants carry out exhaustive site surveys to assess which machine would be the best fit and to advise on installation.
With well over 20 years of expertise in the field and hundreds of satisfied customers nationwide, ACE Group provides the best choice and qualified professional support for all your compressed air needs.
The company is the world’s best manufacturing air compressor supplier. We are your one-stop shop for all needs. Our staff are highly-specialized and will help you find the product you need.
We hope you've found this air compressor buying guide useful. Feel free to ask any questions or make suggestions on information to add to the guide.
There are quite a few different kinds of air compressors. Naturally, certain types are better suited for certain workplaces, and choosing the wrong kind could hinder your productivity.
Consider the following things before you purchase anything:
1. What Compressor size do I need?
The very first step of choosing a air compressor is to understand what size compressor you need. The correct size of a compressor depends on the task means to perform. Pick one is too small and it won't get it job done. Choose one it is too large, and it will waste energy and could lead mechanical problems. Correctly sizing your compressor requires real data about your needs, not guesswork. Whether you're upgrading your current compressor or designing a new system, ask a compressed air sales professional to conduct an air system audit to measure your actual demand.
If you're planning for future capacity, keep in mind that a compressor should be sized to address actual demand. Instead of anticipating potential future demand by oversizing today, add a compressor when the time comes to provide flexibility and redundancy as your operation expands. Also keep in mind that process improvements often reduce air demand; you may be able to expand your operation without expanding air production.
2. What type of compressor do I need?
The next thing to do is to decide on the type of compressor you need for your application.
There are two main types of compressors, piston compressor and rotary screw compressor. Piston compressor which are sometimes also called reciprocating air compressors, are the most economical and least expensive air compressors available. Rotary screw compressors are often the ideal choice for operations that require a constant compressed air supply.
3. Does air quality matter? Oil-Free Or Oil-Lubricated?
Generally, there are two basic categories of air compressors; oil-free or oil-lubricated. Oil-free air compressors don't use oil and can help you ensure that your air quality is great. These are ideal for facilities where air quality is extremely important. On the other hand, oil-lubricated air compressors use oil to lubricate their parts. These machines are incredibly energy-efficient. Take some time to reflect on which type you prefer more.
To not overcomplicate the answer, your choice should be based on the application and process that the compressed air will be utilized in.
4. Understand the pressure and flow?
Compressed air flow is typically measured in cubic meter per minute (M3/min). Compressed air pressure is typically measured in pounds per square inch (Kpa) or barg. Think of flow as the ability to perform a process within an acceptable time frame, and pressure as the ability to support multiple processes at once.
5. What's The Duty Cycle?
An air compressor's duty cycle refers to how often the machine will run. Different models will have different cycles, which could affect your facility's work.
6. How Much Space Will It Take?
Smartly using your available space is crucial if you want to stay organised and productive. Think about how much space you have allotted for commercial air compressors and try to find an air compressor that will be suitable for your worksite.
7. How Will It Be Installed?
Think about how your air compressor will be installed once you've purchased it. Will you install and set it up yourself, or will you hire someone else to do it? You should also consider how your product will be delivered and, if you are replacing an old one, how you will remove your old air compressor.
8. How Will It Be Maintained?
Always figure out the best way to maintain your new air compressor before you order it. Factor in the long-term maintenance cost if you are working on a tight budget. Good air compressors work well and aren't a pain to maintain, so knowing how to take care of your air compressor before you have it is a good idea.
After you purchase and receive your air compressor, remember to maintain and check it routinely. Well-maintained air compressors are less likely to break down than neglected ones and will last longer.
9. Initial vs. Overall Cost
When considering an air compressor, a primary concern should be: 'How can I get the most amount of compressed air for the lowest overall cost?' Many consumers may consider only a small fraction of the life-cycle cost ' primarily the initial cost of the machine, not realizing they will likely spend more in electricity the first year to run the machine than the purchasing price. That's why, when comparing compressors, it's important you examine all aspects of the costs associated!
10. Not Sure Where To Begin?
Start by analyzing your air system's life-cycle costs! You can analyze your usage and potential cost savings by conducting a no-contact compressed air energy assessment. Best of all - it causes no harm or downtime to check.
Finally, it's absolutely essential that you only buy your new air compressor from a reliable seller. Purchasing important products from companies who don't care about quality can land you in hot water.
Good sellers will always value the quality of their products and the satisfaction of their clients. So, it's vital that you always make sure you are buying from reputable and experienced companies.
For more information, please visit rotary vane compressors..