Air Supply: Specialist Compressed Air Engineers

Published: 17/11/2020

Air Compressor FAQs: Buying A Compressed System

If you’re ready to add an air compressor to your business, you may have a few questions that need answering. Understanding the differences between compressor types can make it much easier to find the best solution for your processes. 

Purchasing from a trusted air compressor stockist is also key – and that’s where Air Supply Ltd comes into play. We’re one of the UK’s leading air compressor suppliers, with over 30 years of experience. So, you’re in safe hands with our team. 

With this in mind, we’ve listed some FAQs to help you know what to ask when buying a compressed air system. 

Which air compressor brands do you stock? 

You may already know the exact model or brand you want to purchase, especially if you’re looking to replace your current one. It’s good to know the variety you can choose from.  

Air Supply Ltd stocks air compressors from the following brands: 

  • Worthington 
  • Atlas Copco  
  • MARK 
  • Hydrovane 
  • HPC  
  • KEASER  
  • Ingersoll Rand  
  • Gardner Denver 
  • BOGE   
  • Compair 

Don’t supply the brand you’re looking for? We’ll recommend a suitable alternative from our wide range. 

What type of air compressor should I buy? 

There are several air compressor types on the market. Each one is suited to a different application, so it can be useful to have an idea of what you’ll be using the compressor for, as this determines the type of compressor you’ll buy. 

Piston compressors are best for small-scale industrial environments with light workloads. You’ll commonly find this type in the likes of car garages and workshop settings. 

Rotary screw compressors are built for continuous use in heavy-duty manufacturing plants.  

Rotary scroll compressors emit minimal noise, and are oil free 100% duty, they’re best-suited to quieter environments, such as hospitals and laboratories.  

Additionally, you may come across oil-lubricated and oil-free compressors. Oil-lubricated systems prevent overheating, while oil-free systems are used where contaminated air is prohibited (such as hospitals or food production). 

Read more in our comparison guide of common compressor types. Or, if you’re new to air compressors, seek the advice of an expert before investing in equipment. In doing so, you’ll have confidence that your chosen compressor will match your current workplace demands.  

What size air compressor do I need? 

Asking this question will ensure you walk away with the right compressor for your specific requirements. For instance, a compressor that is too big for your operations will waste energy and unnecessarily increase costs, and one that is too small won’t adequately meet your needs. 

The size of the compressor you need depends on several factors. These include: 

  • The type of tools/equipment you use (and if you’ll be using them simultaneously)  
  • Your desired airflow (measured in cubic feet per minute (CFM) and pounds per square inch (PSI) 
  • How often the compressor will run per day (duty cycle) 
  • Possible workload demand increase 

How do I service an air compressor? 

Servicing an air compressor keeps it in good working order. Knowing when to service your air compressor is more important than how. Regular compressor maintenance will help prevent costly damage to the machine. Catching issues early can reduce your expenses and ensure efficient operations. 

Most compressor suppliers will provide an annual maintenance check. When purchasing from Air Supply, you can leave the servicing to our experts. After all, it’s free of charge if you are hiring from us, and very competitively priced when you buy from us. Also, you have peace of mind that all parts are OEM or exceed the OEM specification, and all our technicians are highly trained. 

How do I use an air compressor?  

All compressors operate differently, so there’s no single way to use an air compressor. Asking your supplier how to use a compressor will give you a good overview. Most instructions can be found in the compressor handbook, but here’s a general guide: 

  1. Wear appropriate PPE (e.g. glasses and safety boots).
  2. Place the compressor in a well-ventilated area to prevent overheating.
  3. Check that all fittings are securely connected.
  4. If you have a lubricated compressor, ensure that the oil level is topped up before switching it on.
  5. Adjust the working pressure to the recommended PSI of the tool/machinery.
  6. Finally, turn off the compressor and release any remaining air pressure.

Do you sell new or used air compressors? 

Depending on your requirements and budget, you may want to compare new to used compressors. There are benefits to both, and it’s a question worth asking. 

Used compressors are budget-friendly. They are cost-effective and often don’t depreciate in value. A second-hand compressor will also be serviced and entirely checked over by the supplier. You can have peace of mind knowing your compressor is in full working order, without having to spend thousands. 

However, buying a new compressor means you have access to the latest models with the most efficiency and a longer lifespan. And also enjoy the benefits of the manufacturers extended warranty. 

Air Supply Ltd stocks both new and used compressors; we have one of the largest stocks of second-hand compressors in the UK. All of our used machines have been fully reconditioned and serviced before sale. Plus, they come with a generous guarantee. 

Can I speak to an expert about my air compressor needs? 

The Air Supply team would be happy to help you find the most suitable compressor for your business requirements. We are one of the UK’s largest suppliers of second-hand compressors. After 30 years, we pride ourselves on our exceptional delivery and customer service. 

Feel free to give us a call on 01904 607050 or email us at info@airsupply.co.uk to discuss your requirements. 

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