Last updated: 16/10/2022

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A heat detector is a device that detects the presence of fire by sensing changes in temperature. Heat detectors are used to detect fires before they spread and cause damage, or even loss of life. They can be installed on ceilings, walls or floors throughout buildings as part of an integrated building alarm system (IBS).

The best Heat Detector in the UK: Our selection

Heat Detector: Frequently asked questions

What types of Heat Detector are there and what determines a good product?

There are two types of heat detectors, the photoelectric and the ionization. The photoelectric detector is more sensitive to smaller fires than an ionization type. It will also detect smoldering fires that may not be detected by other fire detection devices such as smoke alarms or sprinklers. However, it can only sense visible light which means if your home has a lot of dark colors in its decor you might want to consider another option for detecting small fires before they become large ones.

A good Heat Detector is one that can detect a fire in its early stages. It should be able to sense the smallest amount of heat and alert you before your home catches on fire. The best ones are also easy to install, affordable and have an excellent warranty policy.

Who should use a Heat Detector?

Anyone who is concerned about the risk of fire in their home. It’s particularly useful for people with mobility or health problems, and those living alone.

Based on what criteria should you buy a Heat Detector?

The most important factor is the price. You should compare prices from at least three suppliers before making a purchase decision. Good quality comes at a cost so if you want to get value for your money, choose wisely while comparing prices. Other factors that could influence the selection process are brand, warranty and guarantee policy of the manufacturer as well as customer reviews online on retailers’ websites or other platforms like Amazon and eBay etc..

You should look out for the warranty, what is included in the package (accessories), and if you can customize your device.

What are the advantages and disadvantages of a Heat Detector?


Heat detectors are a great way to protect your home from fire. They can be placed in areas where smoke and heat may not be visible, such as the attic or basement. The detector will sound an alarm when it senses high temperatures that could indicate a fire is present.


Heat detectors are not as accurate as smoke alarms. They also have a limited lifespan and must be replaced every 10 years or so.

Shopping Guide: Everything you need to know

Which brands and manufacturers are represented in our review?

In our review, we present products from various manufacturers and suppliers. The list includes products from the following brands and manufacturers, among others:

  • Fireangel
  • Ultrafire Fire Safety

What is the price range of the featured products?

The cheapest Heat Detector in our review costs around 12 pounds and is ideal for customers who are conscious about their money. However, those who are willing to spend more money for better quality can also spend around 98 pounds for one of the more expensive products.