
Improving cardiac arrest outcomes with at-home defibrillators
MyDefib is dedicated to positively impacting out-of-hospital outcomes for sudden cardiac arrest. Our team has extensive experience in the medical field; as care providers and medical equipment engineers.
Our mission: Empowering anyone, anywhere to save a life
We are driven to help deliver critical interventions when and where they are most needed. Supplied by MyDefib, HeartHero is designed to provide continued reassurance at home or away. With reliability, simple functionality, and voice guidance, we are making a difference in emergencies.
Giving you confidence in a crisis
HeartHero is designed for simplicity. Engineered for real-world emergencies, our defibrillator is reliable, durable, and reassuringly easy to use.
Lightweight
HeartHero weighs significantly less than traditional defibrillators. That means anyone can deploy it quickly and easily, regardless of their strength or experience.
Portable
Compact and travel-ready, HeartHero fits easily into bags or glove compartments. That means you’re always prepared, wherever you go.
Waterproof
If you’re caught in the rain or near water, you can depend on HeartHero’s waterproof design. This defibrillator operates reliably in wet conditions.
Works in extreme temperatures
HeartHero performs in temperatures ranging from -20°C to 50°C. Its resistance to extreme heat or cold makes it ideal for travel and outdoor use.
Requires standard batteries
No special chargers or expensive batteries are needed. HeartHero uses four standard CR123A batteries, making replacements fast and accessible from many shops and supermarkets in the UK and overseas.
Six-year warranty
HeartHero comes with a six-year warranty. You can rely on our defibrillator to be a key part of your safety plan, with dedicated customer support whenever you need it.


80%
Of cardiac arrests happen at home

1/10
People survive at-home cardiac arrest without an AED

3x
More chance of a life-saving intervention with an accessible at-home AED

35%
Cases of out of hospital cardiac arrests have public access to defibrillators

With you every step of the way
HeartHero owners can respond to sudden cardiac arrest with confidence. You’ll have access to a resource library of video guides, step-by-step instructions and informative content on the condition.
How to replace your defibrillator pads
If your HeartHero defibrillator pads have reached their expiry date, how do you replace them? This mini guide offers easy steps including, where to get replacement pads, how to detach your old pads and dispose of them safely, and how to connect your new pair of pads.
How to replace your defibrillator batteries
Your HeartHero defibrillator comes with four standard CR123A batteries. You can monitor your battery status easily with the HeartHero app. When the time comes to replace them, the process is simple. This article covers where you can buy batteries for your defibrillator and how to insert them.