Refurbished 21.5 Inch iMac

Price

Price from Price to

Price filter £255£435£255£435£255 — £435255300345390435

Processor Range

i3(2)
i5(0)

RAM

RAM 83283283281632

RAM: 0 - 0

Storage

Storage 2561 0002561 0002561 0002565121 000

Storage: 0 - 0

Storage Type

Solid State Drive (SSD)(2)

Processor Cores

4(2)
6(0)

Graphics RAM

2GB(2)

Showing the single result

Our Refurbishment

All systems provided come in 100% full working order and with our industry leading warranty. The conditions we describe below are only in relation to the cosmetic appearance of our machines. We never supply systems with technical faults unless clearly stated in the condition description. When pricing a system the condition grade is an attributing factor and a reduction of price will be seen on lower grades.

Battery Life

During the assessment stage of our system, we use a measure we call the 80% rule. This rule is our boundary for battery replacement. Our technicians look at the full charge capacity of the laptop vs the design capacity as well as cycle count. If this falls below what we regard as less than 80% of the original battery life we fit the system with a brand new battery.

The batteries we supply have at minimum 80% of the original design capacity. Even our oldest systems should provide at least 3+ hours of battery life with general usage.

Please note this is not Guaranteed as all users use their laptops In different ways. This figure is an average taken using a wide range of systems.

Comprehensive Testing

To ensure the robustness of all our products we employe a well-practised testing procedure that covers all system components. Using leading-edge diagnostics tools, the same of which is used by Apple were able to identify any inconsistencies well before they reach consumers. In addition to this, a 32 point exam which our Apple Certified technicians check by hand the total functional validity of the system. This exam includes but is not limited to test such as keyboard key-strokes, wifi & Bluetooth and accessory connecting.

This exam includes but is not limited to;

Keyboard key-strokes & key feedback response
Wifi and Bluetooth connection and stability
Long-term high load stress stability & performance.
Heat & noise regulation

Refresh & Refurbishment

It’s not just people who need a little R&R. During our testing process, any components which are flagged will be repaired or replaced with new parts. Furthermore, we replace out-of-date storage technology with upgrade solid-state or fusion systems. This means our Macs will last the rigorous test of time with improvements to stability and reliability.

Here are just some of the benefits of our R&R process.

Increase in system lifespan
Improvements to stability & reliability
Performance gain with the addition of current technology
Fresh installation of macOS

Please note we do not ‘repair’ or ‘refurbish’ systems as a service to customers. We only perform work on systems purchased from our store.

Assurance Of Quality

Double check & triple check. Prior to the listing of each system, they’re thoroughly cleaned and sent through our Quality Assurance team. Our QA team re-run our 32 point system check process to ensure hardware & software is fully functional. Then finally a condition assessment is made with a detailed inspection of any applicable imperfections with a grade given to each machine at the end. This condition grade is seconded by the sales team who list our products.

Sale

2019 Apple iMac 4K 21.5-inch Intel i3 3.60 GHz 4-core 8GB 256GB 555X 2GB

From

Margin Scheme 0% VAT

Release Year:

2019

Processor:

3.6 Ghz i3 - Quad Core

RAM Memory:

8GB, 16GB, 32GB

Graphics:

Radeon Pro 555X 2GB

Storage (SSD):

256GB, 512GB, 1TB

Colour:

Silver

From

Margin Scheme 0% VAT

FREE UK Delivery by Wed 07/05/2025

Configure Options

Sale

2019 Apple iMac 4K 21.5-inch Intel i3 3.60 GHz 4-core 8GB 256GB 555X 2GB

From

Includes 20% VAT

Release Year:

2019

Processor:

3.6 Ghz i3 - Quad Core

RAM Memory:

8GB, 16GB, 32GB

Graphics:

Radeon Pro 555X 2GB

Storage (SSD):

256GB, 512GB, 1TB

Colour:

Silver

From

Includes 20% VAT

FREE UK Delivery by Wed 07/05/2025

Configure Options

Showing the single result

You’ve Scrolled Quite A Way...

Almost as far as it is from the Mojave Mountains to Santa Catalina Island.

View FAQs Send Us An Email

[subcription_form]

Representative example:

Assumed credit limit
£1,200

Purchase rate
23.9% p.a. (variable)

Representative
23.9% APR (variable)

Instalments 0% for 4 months

Choose PayPal / PayPal Credit at checkout and select Instalments

Enter a purchase amount to calculate your monthly Instalments

Instalment Rate p.a.	Payments	Minimum Purchase
0.00%	6	£99.00
0.00%	12	£99.00
0.00%	18	£199.00
0.00%	24	£199.00

The monthly payment shown is an estimated amount and may not include taxes and shipping

Representative Example

Assumed credit limit	Purchase rate	Representative
£1,200	23.9% p.a. (variable)	23.9% APR (variable)

How do instalment offers with PayPal Credit work?

With selected merchants, when you check out with PayPal Credit, you'll be shown a selection of instalment offers which enable you to spread the cost of your purchase across a number of repayments. These instalment offers allow you to choose a set monthly repayment over a fixed period to help spread the cost of larger purchases in a more manageable way.

Instalment offers will always have an interest rate lower than the standard variable rate. If you already have PayPal Credit, you can take advantage of these offers without having to reapply as long as you have enough available credit limit.

It is important that you think about whether you can afford the monthly repayment agreed for any instalment offer. This will be added to your monthly minimum repayment amount and will need to be paid each month.

If you fail to make repayments or in certain other circumstances, PayPal may remove your offer and any outstanding amount will be charged at 23.9% p.a. (variable). Please see the Credit Agreement for more details.

What Is PayPal Credit?

PayPal Credit is like a credit card, without the plastic. It's a credit limit that's attached to your PayPal account which you can use for your online purchases. If you have PayPal Credit it will be available as a funding source within your PayPal wallet and can be used for purchases in most places where PayPal is accepted. You can make purchases in the same way as you would with a normal credit card, by choosing PayPal Credit as your funding source at checkout.

For purchases less than £99.00, interest is charged at our standard rate of 23.9% p.a. (variable) if the full amount is not paid off by the date shown on your statement. In addition, PayPal Credit lets you access two types of promotional offers: 0% for 4 months on all purchases of £99.00 and over; and instalment offers with selected merchants.

Is PayPal Credit Available To Everyone?

No, PayPal Credit is only available to customers over 18 living in the United Kingdom (excluding Channel Islands and the Isle of Man). PayPal also have to assess a customer's creditworthiness, so you should have a good credit history to apply.

How Can I Apply For PayPal Credit?

Customers may be offered the opportunity to apply for credit on a website, if purchasing an eligible product and choosing to apply for an instalment offer using PayPal Credit. Otherwise customers can apply directly via PayPal's website.

Click here to see the full FAQ for PayPal Credit and view the Terms and Conditions.

Finance provided by PayPal Credit. Credit subject to Status. Terms and Conditions apply. MacRefresh Ltd acts as a broker and offers credit from PayPal Credit. PayPal Credit and PayPal Pay in 3 are trading names of PayPal UK Ltd, 5 Fleet Place, London, United Kingdom, EC4M 7RD.

Choose PayPal / PayPal Credit at checkout

How does the 0% for 4 months offer work?

For customers with PayPal Credit, 0% interest for 4 months is available on single transactions of £99.00 or more. This means when you spend more than £99.00 in one shopping basket, you'll benefit from the offer and won't be charged any interest on that transaction for 4 months after purchase. This applies automatically to any purchase made using PayPal Credit in excess of this value, except those to which another promotional offer (such as an instalment offer) applies. You can use this offer as many times as you like as long as you have an available credit limit.

While no interest is charged, any balance subject to a 0% for 4 months offer will be included in the calculation of your minimum repayment amount. Any remaining balance due after the 4-month promotional period will be charged at 23.9% p.a. (variable). If you fail to make minimum repayments on time or in certain other circumstances, PayPal may remove your offer. Please see the Credit Agreement for more details.

Representative Example

Assumed credit limit	Purchase rate	Representative
£1,200	23.9% p.a. (variable)	23.9% APR (variable)

What Is PayPal Credit?

Is PayPal Credit Available To Everyone?

How Can I Apply For PayPal Credit?

Click here to see the full FAQ for PayPal Credit and view the Terms and Conditions.

Finance provided by PayPal Credit. Credit subject to Status. Terms and Conditions apply. MacRefresh Ltd acts as a broker and offers credit from PayPal Credit. PayPal Credit is a trading name of PayPal (Europe) S.à.r.l. et Cie, S.C.A., 22-24 Boulevard Royal L-2449, Luxembourg.

Click here to see the full FAQ for PayPal Credit and view the Terms and Conditions.

Certified Refurbished 21.5 Inch iMac

The 21.5 inch iMac all-in-one desktop is designed specifically for the home user. It’s heritage stemming back to the original Apple computers the 21.5 inch iMac offers everything you need bundled together in a stunning aluminium unibody.

The 21.5 inch iMac is offered with a range of processor from Core 2 Duo to i3, i5 and i7 desktop-class processors. Ideal for use anywhere from the home office to a music production or video editing suite. Dedicated graphics cards are also available on selected models. A range of RAM and storage sizes are available to configure to catering for all users.

If you’re looking for more performance than what the 21-inch iMac offers, please see our 27-inch iMacs.

If you’re unsure which model refurbished iMac to buy or specification is suitable for you or require more information; please feel free to get in touch with our team.

Where To Find Your Serial Number

Providing the serial number allows for a smooth payout process when trading on your Mac. Here’s a simple guide on how to find your Mac’s serial number, which can be found under Basic System Information.

Basic System Information

To quickly view basic information about your Mac, such as the macOS version, processor, memory, and serial number, follow these steps:

1. Apple Menu: Click the Apple menu () in the top-left corner of your screen.
2. About This Mac: Select “About This Mac.”
  - A single window will appear with some basic information, including the serial number.
  - On older versions of macOS, you should find that by default, you are on the “Overview” tab. The serial number and other basic system information are at the bottom of the “Overview” tab.

Processor

For most users, the processor will be the most significant factor in how fast your device feels. It’s important to note the newer a system is, the more current the processor is. More recent generations of processors are more powerful and efficient. Even the lower-range versions of processors can be quicker than the older but higher-range models. There are three core components to the naming scheme we use on our products.

Think of the processor as a treadmill which moves all the actions you make on it. The higher the clock speed, the faster the treadmill moves, and the higher the core count, the more treadmills you have.

The range is a little more complex with Intel following an i3, i5, i7 and i9 naming scheme. Apple Silicon has an M designation, with M1 being the first chips released and the performance models having the Pro or Max suffix. Intel’s flagship processor is the i9, and Apple has the M Max.

Graphics

If you’re not looking for graphics performance, i.e. you don’t plan on gaming, you’re not a video professional, or you have no plan on working with video tools, then the graphics in your device are irrelevant to you. If you fall into that category, however, it would be wise to pick something with a dedicated graphics card.

When shopping around our site, you will see Intel HD, Intel Iris, Intel Iris Plus or other similar options. These are integrated graphics options and not something you should opt for.

The way we describe which graphics card is included in each model is as follows.

The range GeForce, Radeon is a brand name. Apple provided Nvidia graphics options until 2015, when they switched to AMD. The model name can be confusing, but when looking at an individual model, the higher the number in the model, the faster it is. The most straightforward part is the video memory which higher is better. The highest tier options generally have 8GB but hold a substantial price tag. For entry-level users, 2GB or 4GB should be plenty. For professionals, we recommend you get in touch and speak with our team about your exact requirements.

Memory

RAM, aka. Random Access Memory

If you want to use your computer casually – for example, to browse the internet, reply to emails and listen to music – We recommend a minimum of 4GB RAM.

For all other users, such as office workers looking for a used Apple computer, we recommend 8GB of RAM. At this size, internet browsing, emails, watching videos and listening to music is easy, and you can do many things simultaneously. You can also run word processing, flash games, and run simple graphics programs smoothly with this much RAM.

Suppose you work in a creative environment where you need to edit large files or photos and videos, especially if you’re accessing more than one file at a time. In that case, we recommend getting a computer with at least 16GB. 16GB of RAM gives you enough memory for video editing, music, design work, and running more intensive software such as the Adobe Suite.

Storage

There are three types of storage available to you, plus fusion drives which we will explain separately. All consumer storage drives come in gigabytes (GB) or terabytes (TB). One thousand gigabytes are equal to a terabyte.

Hard Disk Drive (HDD). Traditional disk-based hard drives are cheap in capacity but slow in speed.

Solid State Drive (SSD). Solid state drives contain no moving parts, are generally 2-3x faster than a hard drive, and offer a much better experience. They tend to be inexpensive for smaller capacities. Above 1TB, the price increases dramatically.

Flash Solid State Drive (Flash SSD). Flash SSDs are the latest version of the SSD. They can be 5x up to 30x faster than a hard drive. The higher their capacity, the faster they are. They are also the most expensive.

In the modern age of cloud storage and backups for most users, internal storage is becoming less critical. We recommend at least 256GB of storage for most users. Unless you have a specific need, such as keeping large files locally for quick access or an extensive collection of large apps, 512GB is more than enough for most.

Fusion drives are a combination of two storage devices. Typically a large 1-3TB HDD and a smaller 32-128GB SSD. Then using software, the drives are connected and automatically store your most used files on the SSD, archiving your lesser used data on the HDD. This sounds great; however, if you’re not a home user with a predictable usage pattern, you’ll find it mismanaging your data and your computer slowing down randomly.

Check out our extensive guide on cloud storage and backing up your device here.

Operating System

The myth that you’re better off waiting a while before updating your macOS is a thing of the past. Apple has dramatically improved their initial releases. However, the stigma has still stuck with some users. Unless you have a specific need for an older version, for example, if you’re running legacy software that is no longer updated, you may need to choose a previous version. As default, we install the latest supported version with all the newest features and security updates.

Warranty

How Long Is Our Warranty

Labour – 1 Year / 3 Years (Extended)
Parts – 1 Year / 3 Years (Extended)
Software – 1 Year / 3 Years (Extended)
Battery Service – 1 Year
Free Collection Service – 30 Days
Technical Support – Forever

What’s Covered By Our Warranty

Our standard warranty covers all items sold by MacFinder. The length of this warranty is typically one year; however, this will be stated on the product page. It will also be referenced in your email confirmations and delivery documentation for future reference.

Our standard warranty warrants the machine to the purchaser against defects in materials and workmanship for the length of your warranty.

What does this mean? It means that if you have a problem with your Mac during the warranty period, for example, it won’t turn on, you have a flicker on the screen, or a port isn’t working, then you can give us a call, send us your system, and we will find a solution.

Accessories

Condition

Our Refurbished Device Grades

All our devices are meticulously inspected and refurbished by certified technicians in the UK to ensure exceptional quality, regardless of condition. Here’s what each grade means:

New – Unsealed

Original packaging provided but unsealed to allow for thorough testing.
Pristine condition, with no signs of use.
Fewer than 10 battery cycles, ensuring minimal battery wear.
We test every device to guarantee it meets our high standards.

Standard Condition

May come with the original box if available (not guaranteed).
Minor signs of expected wear and tear.
No screen imperfections—your display will be flawless.
Battery health at 80% or higher of its original capacity.
Any devices with noticeable cosmetic imperfections are carefully separated from this grade.

Cosmetic Imperfections

Perfect for budget-conscious buyers seeking a fully functional device at a lower price.
A range of cosmetic imperfections, such as scratches or scuffs, that do not affect performance or internal components.
All devices in this grade are 100% functional and undergo the same rigorous inspection process as other grades.
Photos and detailed notes are provided online for complete transparency.

Guaranteed Quality Across All Grades

No matter which condition you choose, every device is refurbished to meet our strict standards for functionality and performance. Buy confidently, knowing you’re getting a great product at a fair price.

Colour

Traditionally, devices came in Silver, but in 2016 Apple started offering Space Grey, Gold or Rose Gold. Newer models can come in up to 7 different colours.

Tax Class

To keep our prices as competitive as possible, we sell items at the standard 20% VAT rate or under the Margin Scheme. This makes no difference to consumers. If you’re a UK VAT-registered business, there is no VAT claimable on Margin Scheme purchases.

On Sale MacBook Pros

On Sale MacBook Pros

Have A MacBook Pro To Sell

Have A MacBook Pro To Sell

On Sale iMacs

On Sale iMacs

Have An iMac To Sell

Have An iMac To Sell

Refurbished 21.5 Inch iMac

Our Top Pick

2019 Apple iMac 4K 21.5-inch Intel i3 3.60 GHz 4-core 8GB 256GB 555X 2GB

Have a Mac to Sell?

Price

Processor Range

RAM

Storage

Storage Type

Processor Cores

Graphics RAM

Our Refurbishment

Battery Life

Comprehensive Testing

Refresh & Refurbishment

Assurance Of Quality

2019 Apple iMac 4K 21.5-inch Intel i3 3.60 GHz 4-core 8GB 256GB 555X 2GB

2019 Apple iMac 4K 21.5-inch Intel i3 3.60 GHz 4-core 8GB 256GB 555X 2GB

You’ve Scrolled Quite A Way...

How do instalment offers with PayPal Credit work?

What Is PayPal Credit?

Is PayPal Credit Available To Everyone?

How Can I Apply For PayPal Credit?

How does the 0% for 4 months offer work?

What Is PayPal Credit?

Is PayPal Credit Available To Everyone?

How Can I Apply For PayPal Credit?

Filters

Price

Processor Range

RAM

Storage

Storage Type

Processor Cores

Graphics RAM

What Our Customers Say About Our Refurbished Products

Want to know more about your 21.5-inch

Certified Refurbished 21.5 Inch iMac

Product Condition

How Do We Grade Our Systems

Standard Condition

Cosmetic Imperfections

Battery Life

Get The Latest Products First

Get Social

What’s This?

Where To Find Your Serial Number

Basic System Information

Processor

Graphics

Memory

Storage

Operating System

Warranty

Accessories

Condition

Colour

Tax Class

Need help with a purchase or assistance with your Mac?

Technical Support

Our Location

What’s This?