Guide to defibrillators

A defibrillator in action

What is an automated external defibrillator (AED)?

An AED is a portable electronic device that automatically diagnoses and treats life threatening cardiac arrhythmias through the application of electrical therapy, allowing the heart to re-establish an effective rhythm.

AEDs are easy to use and could be the best investment you ever make.

Why should you have a defibrillator?

Immediate defibrillation can be the difference between a life lost and a life saved.

  • Around 30,000 people have a cardiac arrest each year outside the confines of a hospital
  • The chance of survival after the heart stops falls by around 10% for every minute that passes without defibrillation
  • It can take the emergency services several minutes (and sometimes longer) to arrive.

Why buy your defibrillator from St John Ambulance?

Trusted: St John Ambulance is the nation's leading first aid organisation and the UK's biggest reseller of defibrillators to the public and private sectors

Wide range: Our range of AED units offers the widest choice, with features appropriate for any users and environments

Impartial advice: If you're not sure which unit is best for you, our trained advisors will provide friendly guidance to help you make the right choice

Affordable options: We have a selection of defibrillators to cater for different budgets in the workplace, and our sales team are more than happy to discuss the best option to suit your needs

Free delivery: We will deliver your chosen defibrillator to you at no extra cost.**

* Terms and conditions apply. Contact us for further details.
** Free standard delivery applies to all orders over £150 within the UK. Terms and conditions apply.

It can be the difference between a life lost and a life saved

Tim Rose, Site Manager for Friends Provident, successfully used an AED and cardiopulmonary resuscitation (CPR), learned on a St John Ambulance training course, to save someone’s life when they suffered a heart attack in the workplace.

How to use a defibrillator

Using a defibrillator

Our in-house expert Clive James gave a demonstration on BBC Breakfast on how to use a defibrillator.

The devices are not just for doctors and can be found in public places like supermarkets, airports and train stations.

Frequently asked questions

To help you understand about defibrillation and defibrillators (AEDs), we have put together a list of questions we get asked most often. They have been broken up into three sections for your benefit.

Section 1 - What is an AED and why should I have one?

Section 2 - The ease of using an AED

Section 3 - Technical questions

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