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What is an automated external defibrillator (AED)?

An Automated External Defibrillator (AED) is a portable life saving device that can give a casualty’s heart an electric shock, when it has stopped beating normally in a sudden cardiac arrest.

A defibrillator works by checking the casualty's heart rhythm once the defibrillator pads are placed on their chest and giving them a shock if needed.

Defibrillators can be used on adults or children over one year old.

By using a defibrillator before an ambulance arrives, you can significantly increase someone’s chance of survival.

When should you use a defibrillator?

Defibrillators are used to treat someone in cardiac arrest. A cardiac arrest is when someone’s heart has stopped beating normally and they are unresponsive and not breathing.

Why is using a defibrillator important?

How much is a defibrillator?

How much does a defibrillator cost?

The cost of a defibrillator can vary depending on the model and its features. Typically, defibrillators can cost between £800 and £2,500.

All defibrillators we sell:

  • come with voice instructions to guide the rescuer through each step of the rescue
  • provide a shock to the patient either automatically or at the press of a button
  • perform daily, weekly and monthly self-tests to let you know if the device is ready for use.

Defibrillators come with varying degrees of protection from dust and water, making some more suitable in harsher environments than others. Some defibrillators will come with additional features, such as an LCD display screen for visual instructions, real time CPR feedback to let the rescuer know the quality and effectiveness of their CPR, or ECG display for more professional models.

To help you decide which defibrillator would best be suited to your workplace, home or community we have put together a list of things to consider and a comparison table of our defibrillator range below.

How much does a defibrillator cost to maintain?

How much does defibrillator training cost?

What you should consider when purchasing a defibrillator?

  • who will likely need the defibrillator – in some cases children will need separate paediatric defibrillation pads
  • storing your defibrillator – fixed-location defibrillators should be stored in a cabinet or wall bracket, with appropriate signage
  • training – while you do not need to be trained to use a defibrillator, taking training can ensure you are familiar with the device and ready to act quickly in an emergency. Vitally, rescuers will still need to perform CPR, so it is important to know how to do this
  • educating your community – ensure your colleagues or community members are aware of the defibrillator, its location, how to access it, and how to use it.

Find defibrillators suitable for:

Schools

Transport and transportation hubs

Shopping centres and public areas

Harsh environments (sea vessels, industrial sites)

Offices

Defibrillator comparison table

Model Powerheart G5 AED Fully Automatic Defibrillator

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Powerheart G5 AED Semi-Automatic Defibrillator

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Powerheart G5 AED with Intellisense CPR Device Semi-Automatic Defibrillator

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Powerheart G5 AED with Intellisense CPR Device Fully Automatic Defibrillator

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Powerheart G3 Elite Fully Automatic Defibrillator

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Powerheart G3 Elite Semi-Automatic Defibrillator

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Heartsine Samaritan Pad 350P Semi-Automatic Defibrillator

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Heartsine Samaritan Pad 360P Fully Automatic Defibrillator

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Heartsine Samaritan PAD 500P Semi-Automatic Defibrillator

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iPAD SP1 Fully Automatic Defibrillator

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iPAD SP1 Semi-Automatic Defibrillator

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Lifeline AED Fully Automatic Defibrillator with 5 Year Battery Pack

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Lifeline AED Fully Automatic Defibrillator with 7 Year Battery Pack

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Lifeline AED Semi-Automatic Defibrillator with 5 Year Battery Pack

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Lifeline AED Semi-Automatic Defibrillator with 7 year battery pack

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Lifeline View AED Semi-Automatic Defibrillator

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Philips HeartStart FRx Semi-Automatic Defibrillator

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Philips HeartStart HS1 Semi-Automatic Defibrillator

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Lifepak CR2 Fully Automatic Defibrillator with WiFi 30:2

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Lifepak CR2 Fully Automatic Defibrillator with 3G 30:2

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Lifepak CR2 Fully Automatic Defibrillator with USB

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Lifepak CR2 Semi-Automatic Defibrillator with WiFi 30:2

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Lifepak CR2 Semi-Automatic Defibrillator with 3G 30:2

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Lifepak CR2 Semi-Automatic Defibrillator with USB

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Lifepak 1000 Semi-Automatic Defibrillator

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Lifepak 1000 Semi-Automatic Defibrillator with ECG Display and Manual Override
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ZOLL 3 AED Fully Automatic Defibrillator

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ZOLL 3 AED Semi-Automatic defibrillator

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ZOLL AED Plus Fully Automatic Defibrillator

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ZOLL AED Plus Semi-Automatic Defibrillator

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ZOLL AED Pro Semi-Automatic Defibrillator with Manual Override

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  Powerheart G5 AED Automatic Powerheart G5 AED Semi-Automatic Powerheart G5 AED with Intellisense CPR Device Semi-Automatic Defibrillator Powerheart G5 AED with Intellisense CPR Device Fully Automatic Defibrillator Powerheart G3 Elite Fully Automatic Powerheart G3 Elite Semi-Automatic Heartsine Samaritan Pad 350P Semi-Automatic Defibrillator Heartsine Samaritan Pad 360P Fully Automatic Defibrillator Heartsine Samaritan PAD 500P Semi-Automatic Defibrillator iPAD SP1 Fully Automatic Defibrillator iPAD SP1 Semi-Automatic Defibrillator Lifeline AED Fully Automatic Defibrillator with 5 Year Battery Pack Lifeline AED Fully Automatic Defibrillator with 7 Year Battery Pack Lifeline AED Semi-Automatic Defibrillator with 5 Year Battery Pack Lifeline AED Semi-Automatic Defibrillator with 7 year battery pack Lifeline View AED Semi-Automatic Defibrillator with Full Colour Display Philips HeartStart FRx Semi-Automatic Defibrillator Philips HeartStart HS1 Semi-Automatic Defibrillator Lifepak CR2 Fully Automatic Defibrillator with Handle and WiFi 30:2 Lifepak CR2 Fully Automatic Defibrillator with Handle and 3G 30:2 Lifepak CR2 Fully Automatic Defibrillator with Handle and USB Lifepak CR2 Semi-Automatic Defibrillator with Handle and WiFi 30:2 Lifepak CR2 Semi-Automatic Defibrillator with Handle and 3G 30:2 Lifepak CR2 Semi-Automatic Defibrillator with Handle and USB Lifepak 1000 Semi-Automatic Defibrillator Lifepak 1000 Semi-Automatic Defibrillator with ECG Display and Manual Override ZOLL 3 AED Fully Automatic Defibrillator ZOLL 3 AED Semi-Automatic defibrillator ZOLL AED Plus Fully Automatic Defibrillator ZOLL AED Plus Semi-Automatic Defibrillator ZOLL AED Pro Semi-Automatic Defibrillator with Manual Override<
Price

£1,200.00 ex VAT

£1,200.00 ex VAT

£1,250.00 ex VAT

£1,250.00 ex VAT

£1,050.00 ex VAT

£1,050.00 ex VAT

£905.00 ex VAT

£840.00 ex VAT

£1,315.00 ex VAT

£1,005.00 ex VAT

£1,005.00 ex VAT

£1,050.00 ex VAT

£1,100.00 ex VAT

£1,000.00 ex VAT

£1,050.00 ex VAT

£1,400.00 ex VAT

£1,335.00 ex VAT

£850.00 ex VAT

£1,719.00 ex VAT

£1,848.00 ex VAT

£1,525.00 ex VAT

£1,663.00 ex VAT

£1,762.00 ex VAT

£1,475.00 ex VAT

£1,700.00 ex VAT

£1,980.00 ex VAT

£1,600.00 ex VAT

£1,525.00 ex VAT

£1,100.00 ex VAT

£1,035.00 ex VAT

£2,150.00 ex VAT

Defibrillator type Fully Automatic Semi-Automatic Semi-Automatic Fully Automatic Fully Automatic Semi-Automatic Semi-Automatic Fully Automatic Semi-Automatic Fully Automatic Semi-Automatic Fully Automatic Fully Automatic Semi-Automatic Semi-Automatic Semi-Automatic Semi-Automatic Semi-Automatic Fully Automatic Fully Automatic Fully Automatic Semi-Automatic Semi-Automatic Semi-Automatic Semi-Automatic Semi-Automatic Fully Automatic Semi-Automatic Fully Automatic Semi-Automatic Semi-Automatic
Warranty 8 years 8 years 8 years 8 years 7 years 7 years 8 years 8 years 8 years 7 years + 3 years once registered online with the manufacturer 7 years + 3 years once registered online with the manufacturer 8 years 8 years 8 years 8 years 8 years 8 years 8 years 8 years 8 years 8 years 8 years 8 years 8 years 5 years 5 years 6 years + 2 years free upon registration of device 6 years + 2 years free upon registration of device 5 years + 2 years free upon registration of device 5 years + 2 years free upon registration of device 5 years
Dimensions 9 × 23 × 30 cm 9 × 23 × 30 cm 9 × 23 × 30 cm 9 × 23 × 30 cm 8 × 27 × 31 cm 8 × 27 × 31 cm 20 x 18.4 x 4.8cm 20 x 18.4 x 4.8cm 20 x 18.4 x 4.8cm 26 × 25.6 × 6.95 cm 26 × 25.6 × 6.95 cm 22 × 30 × 7 cm 22 × 30 × 7 cm 22 × 30 × 7 cm 22 × 30 × 7 cm 18.5 × 24 × 5.8 cm 22 × 18 × 6 cm 21 × 19 × 7 cm 22.6 × 27.4 × 9.7 cm 22.6 × 27.4 × 9.7 cm 22.6 × 27.4 × 9.7 cm 22.6 × 27.4 × 9.7 cm 22.6 × 27.4 × 9.7 cm 22.6 × 27.4 × 9.7 cm 23.4 × 27.7 × 8.7 cm 23.4 × 27.7 × 8.7 cm 23.6 × 24.7 × 12.7 cm 23.6 × 24.7 × 12.7 cm 24.1 × 29.2 × 13.3 cm 24.1 × 29.2 × 13.3 cm 23.5 × 23.9 × 7.6 cm
Weight 2.6 kg including battery and pads 2.6 kg including battery and pads 2.6 kg including battery and pads 2.6 kg including battery and pads 3.1 kg including battery and pads 3.1 kg including battery and pads 1.1 kg 1.1 kg 1.1 kg 2.4 kg including battery and pads 2.4 kg including battery and pads 1.9 kg including battery 1.9 kg including battery 1.9 kg including battery 1.9 kg including battery 1.4 kg including battery 1.6 kg including battery 1.5 kg including battery and cartridge 2.0 kg including battery and pads 2.0 kg including battery and pads 2.0 kg including battery and pads 2.0 kg including battery and pads 2.0 kg including battery and pads 2.0 kg including battery and pads 3.2 kg including battery and pads 3.2 kg including battery and pads 2.5 kg including battery 2.5 kg including battery 3.1 kg including battery and pads 3.1 kg including battery and pads 2.9 kg including battery and pads
IP rating IP55 IP55 IP55 IP55 IP24 IP24 IP56 IP56 IP56 IP55 IP55 IP54 IP54 IP54 IP54 IP55 Waterjet-proof IPX5, Dust-protected IP5X Solid objects IP2X, Drip-proof IPX1 IP55 IP55 IP55 IP55 IP55 IP55 IP55 IP55 IP55 IP55 IP55 IP55 IP55
Drop tolerance 1.22m 1.22m 1.22m 1.22m 1m 1m 1m 1m 1m 1.22m 1.22m 1m 1m 1m 1m 1.2m 1.22m 1m - - - - - - 1m 1m 1m 1m 1.5m 1.5m 1.5m
CPR monitoring No No Yes Yes No No No No No No No No No No No No No No No No No No No No No No Yes Yes Yes Yes Yes
ECG display No No No No No No No No No No No No No No No No No No No No No No No No No Yes No No No No Yes
Battery Powerheart G5 Lithium Battery Powerheart G5 Lithium Battery Powerheart G5 Lithium Battery Powerheart G5 Lithium Battery Powerheart G3 Elite IntelliSense 4-year Battery Powerheart G3 Elite IntelliSense 4-year Battery Heartsine Samaritan Adult Pad-Pak Heartsine Samaritan Adult Pad-Pak Heartsine Samaritan Adult Pad-Pak iPAD SP1 Battery iPAD SP1 Battery Lifeline Standard Capacity 5-Year Battery Lifeline High Capacity 7-Year Battery Lifeline Standard Capacity 5-Year Battery Lifeline High Capacity 7-Year Battery Lifeline View Standard Capacity 4-year Battery Pack Philips HeartStart Lithium Defibrillator Battery Philips HeartStart Lithium Defibrillator Battery Lifepak CR2 Replacement Battery Kit Lifepak CR2 Replacement Battery Kit Lifepak CR2 Replacement Battery Kit Lifepak CR2 Replacement Battery Kit Lifepak CR2 Replacement Battery Kit Lifepak CR2 Replacement Battery Kit Lifepak Non-Rechargeable Li MnO2 Battery Replacement Kit Lifepak Non-Rechargeable Li MnO2 Battery Replacement Kit ZOLL AED 3 Battery Pack ZOLL AED 3 Battery Pack Pack of 10 CR123A Lithium Batteries Pack of 10 CR123A Lithium Batteries ZOLL AED Pro Non-Rechargeable Lithium Battery Pack
Battery shelf life 4 years 4 years 4 years 4 years 4 years 4 years 4 years 4 years 4 years 4 years 4 years 5 years 7 years 5 years 7 years 4 years 4 years 4 years 4 years 4 years 4 years 4 years 4 years 4 years 5 years 5 years 5 years 5 years 5 years 5 years 5 years
Battery replacement price

£305.00 ex VAT

£305.00 ex VAT

£305.00 ex VAT

£305.00 ex VAT

£270.00 ex VAT

£270.00 ex VAT

£92.00 ex VAT

£92.00 ex VAT

£92.00 ex VAT

£182.00 ex VAT

£182.00 ex VAT

£215.00 ex VAT

£299.00 ex VAT

£215.00 ex VAT

£299.00 ex VAT

£205.00 ex VAT

£122.00 ex VAT

£122.00 ex VAT

£182.00 ex VAT

£182.00 ex VAT

£182.00 ex VAT

£182.00 ex VAT

£182.00 ex VAT

£182.00 ex VAT

£185.00 ex VAT

£185.00 ex VAT

£118.00 ex VAT

£118.00 ex VAT

£19.30 ex VAT

£19.30 ex VAT

£155.00 ex VAT

Pads Powerheart G5 Adult Defibrillator Pads Powerheart G5 Adult Defibrillator Pads Powerheart G5 Adult Defibrillator Pads with CPR Device Powerheart G5 Adult Defibrillator Pads with CPR Device Powerheart G3 Adult Defibrillation Pads Powerheart G3 Adult Defibrillation Pads Heartsine Samaritan Adult Pad-Pak Heartsine Samaritan Adult Pad-Pak Heartsine Samaritan Adult Pad-Pak iPAD SP1 Dual Use Adult / Child Electrode Pads iPAD SP1 Dual Use Adult / Child Electrode Pads Lifeline AED Adult Defibrillator Pads Lifeline AED Adult Defibrillator Pads Lifeline AED Adult Defibrillator Pads Lifeline AED Adult Defibrillator Pads Lifeline View Adult Defibrillator Pads Philips HeartStart SMART Pads II Cartridge Philips HeartStart HS1 Adult SMART Electrode Pads Cartridge Lifepak CR2 Replacement QUIK-STEP Electrode Kit Lifepak CR2 Replacement QUIK-STEP Electrode Kit Lifepak CR2 Replacement QUIK-STEP Electrode Kit Lifepak CR2 Replacement QUIK-STEP Electrode Kit Lifepak CR2 Replacement QUIK-STEP Electrode Kit Lifepak CR2 Replacement QUIK-STEP Electrode Kit Edge System Electrodes with QUIK-COMBO Connector and REDI-PAK Pre-Connect System Edge System Electrodes with QUIK-COMBO Connector and REDI-PAK Pre-Connect System ZOLL CPR Uni-Padz Universal Electrodes ZOLL CPR Uni-Padz Universal Electrodes CPR-D-Padz with First Responder Kit for ZOLL Defibrillators CPR-D-Padz with First Responder Kit for ZOLL Defibrillators CPR-D-Padz with First Responder Kit for ZOLL Defibrillators
Pad shelf life 20 - 24 months 20 - 24 months 20 - 24 months 20 - 24 months 24 months 24 months 4 years 4 years 4 years 3 years 3 years 2 years 2 years 2 years 2 years 2 years 2 years 2 years 4 years 4 years 4 years 4 years 4 years 4 years 18 months 18 months 5 years 5 years 5 years 5 years 5 years
Pad replacement price

£57.00 ex VAT

£57.00 ex VAT

£140.00 ex VAT

£140.00 ex VAT

£56.00 ex VAT

£56.00 ex VAT

£92.00 ex VAT

£92.00 ex VAT

£92.00 ex VAT

£45.00 ex VAT

£45.00 ex VAT

£41.00 ex VAT

£41.00 ex VAT

£41.00 ex VAT

£41.00 ex VAT

£68.00 ex VAT

£50.00 ex VAT

£54.00 ex VAT

£82.00 ex VAT

£82.00 ex VAT

£82.00 ex VAT

£82.00 ex VAT

£82.00 ex VAT

£82.00 ex VAT

£23.00 ex VAT

£23.00 ex VAT

£129.00 ex VAT

£129.00 ex VAT

£99.00 ex VAT

£99.00 ex VAT

£99.00 ex VAT

Adult energy selection 95 to 354 Joules 95 to 354 Joules 95 to 354 Joules 95 to 354 Joules 95 to 351 Joules 95 to 351 Joules 150 to 200 Joules 150 to 200 Joules 150 to 200 Joules 150 Joules 150 Joules 150 Joules 150 Joules 150 Joules 150 Joules 150 Joules 150 Joules 150 Joules 200 - 360 Joules 200 - 360 Joules 200 - 360 Joules 200 - 360 Joules 200 - 360 Joules 200 - 360 Joules 200 - 360 Joules 200 - 360 Joules 120 - 200 Joules 120 - 200 Joules 120 - 200 Joules 120 - 200 Joules 120 - 200 Joules
Child pad Powerheart G5 Child Defibrillator Pads Powerheart G5 Child Defibrillator Pads Powerheart G5 Child Defibrillator Pads Powerheart G5 Child Defibrillator Pads Powerheart G3 Infant/Child Defibrillation Pads Powerheart G3 Infant/Child Defibrillation Pads Heartsine Samaritan Paediatric Pad-Pak Heartsine Samaritan Paediatric Pad-Pak Heartsine Samaritan Paediatric Pad-Pak iPAD SP1 Dual Use Adult / Child Electrode Pads iPAD SP1 Dual Use Adult / Child Electrode Pads Lifeline AED Child Defibrillator Pads Lifeline AED Child Defibrillator Pads Lifeline AED Child Defibrillator Pads Lifeline AED Child Defibrillator Pads Lifeline View Child Defibrillator Pads Philips HeartStart SMART Pads II Cartridge Philips HeartStart HS1 Infant/Child SMART Electrode Pads Lifepak CR2 Replacement QUIK-STEP Electrode Kit Lifepak CR2 Replacement QUIK-STEP Electrode Kit Lifepak CR2 Replacement QUIK-STEP Electrode Kit Lifepak CR2 Replacement QUIK-STEP Electrode Kit Lifepak CR2 Replacement QUIK-STEP Electrode Kit Lifepak CR2 Replacement QUIK-STEP Electrode Kit Lifepak Replacement Infant/Child Reduced Energy Electrodes Lifepak Replacement Infant/Child Reduced Energy Electrodes ZOLL CPR Uni-Padz Universal Electrodes ZOLL CPR Uni-Padz Universal Electrodes ZOLL Infant/Child Pedi Padz II for Zoll Defibrillators ZOLL Infant/Child Pedi Padz II for Zoll Defibrillators ZOLL Infant/Child Pedi Padz II for Zoll Defibrillators
Child pad included No No No No No No No No No Yes Yes No No No No No Yes when used with Infant/Child key No Yes Yes Yes Yes Yes Yes No No Yes Yes No No No
Child pad price

£74.00 ex VAT

£74.00 ex VAT

£74.00 ex VAT

£74.00 ex VAT

£98.00 ex VAT

£98.00 ex VAT

£168.00 ex VAT

£168.00 ex VAT

£168.00 ex VAT

£45.00 ex VAT

£45.00 ex VAT

£99.50 ex VAT

£99.50 ex VAT

£99.50 ex VAT

£99.50 ex VAT

£119.00 ex VAT

£50.00 ex VAT

£89.00 ex VAT

£80.00 ex VAT

£80.00 ex VAT

£80.00 ex VAT

£80.00 ex VAT

£80.00 ex VAT

£80.00 ex VAT

£86.00 ex VAT

£86.00 ex VAT

£129.00 ex VAT

£129.00 ex VAT

£66.00 ex VAT

£66.00 ex VAT

£66.00 ex VAT

Child energy selection 22 to 82 Joules 22 to 82 Joules 22 to 82 Joules 22 to 82 Joules 22 to 82 Joules 22 to 82 Joules 50 Joules 50 Joules 50 Joules 50 Joules 50 Joules 50 Joules 50 Joules 50 Joules 50 Joules 50 Joules 50 Joules 50 Joules 50 - 90 Joules 50 - 90 Joules 50 - 90 Joules 50 - 90 Joules 50 - 90 Joules 50 - 90 Joules 50 - 90 Joules 50 - 90 Joules 50 - 85 Joules 50 - 85 Joules 50 - 85 Joules 50 - 85 Joules 50 - 85 Joules
Case included No No No No No No Yes Yes Yes Yes Yes No No No No No Yes Yes No No No No No No Yes Yes No No Yes Yes Yes
Connectivity No No No No No No Yes with Heartsine Gateway Yes with Heartsine Gateway Yes with Heartsine Gateway No No No No No No No No No No Yes Yes Yes Yes Yes Yes No No Yes Yes No No

Should a defibrillator be kept in a locked cabinet?

Different ambulance trusts recommend different things when it comes to locking the cabinet. Please check with the ambulance trust in your local area for their advice.

Some defibrillator cabinets are alarmed rather than locked, letting people know that the defibrillator is being accessed.

St John Ambulance believes defibrillators should made as accessible as possible to ensure they can be accessed quickly in an emergency.

Shop defibrillator cabinets and wall brackets

Do defibrillators need to be registered with the ambulance service?

We've partnered with the British Heart Foundation, Resuscitation Council UK and UK Ambulance Services to make defibrillators more accessible via The Circuit and give them the best chance of saving a life.

The Circuit

Early defibrillation before emergency services arrive can help double a person’s chances of surviving an out-of-hospital cardiac arrest. However in the UK, defibrillation is received in less than 1 out of 10 cases. There are an estimated 100,000 defibrillators in the UK, but only 30% of defibrillators are known to ambulance services, which means that tens of thousands of defibrillators aren't used in an emergency because emergency services don’t know where they are.

The Circuit is the national defibrillator network which maps defibrillators across the UK, connecting them directly and automatically to each ambulance service.

Register on The Circuit to give your defibrillator its best chance of saving a life - put your defibrillator on the map.

Register on your defibrillator

Find out more about The Circuit and answers to some frequently asked questions, read our page.

What else to keep with a defibrillator

You will also need:

  • A towel, tissues, or wipes to dry the casualty’s chest if it is wet or sweaty.
  • A razor to shave the casualty’s chest.
  • Scissors to cut away the casualty’s clothing.
  • A face shield for administering CPR.

For more information on why you may need these items as a rescuer, read our Defibrillator guide for rescuers.

Shop extra things to keep with a defibrillator

Did you find this information helpful?

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Defibrillators, accessories and training models

Explore our range of fully and semi-automatic defibrillators and everything you need to help you install and maintain your device.

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Free resources

Download our free defibrillator maintenance posters.

Defibrillator checklist

defibrillator checklist

Use our defibrillator maintenance checklist to keep track of your inspections and your pad and battery expiry dates.

Defibrillator location poster

defibrillator location poster

Use our defibrillator location poster to update signs around your workplace so everyone knows where their nearest def...

Book Defibrillator and CPR training

Defibrillator and CPR training

Learn how to operate a defibrillator and how to perform effective CPR to give you the confidence to act quickly and effectively if someone has a cardiac arrest.

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Related advice

Defibrillators - a guide for rescuers

Read our guide to understand what a defibrillator is, when you should use one, and who can use a defibrillator.

Guide to defibrillator maintenance and upkeep

If you are responsible for the upkeep of a defibrillator in your workplace or community, read our guide for answers to frequently asked questions.

How to use a defibrillator

By using a defibrillator before an ambulance arrives, you can significantly increase someone’s chance of survival. Learn what to do.