9 May 2018
By: Jonathan Kidner

It goes without saying that safety is always a key factor when installing a new appliance – and it is especially important to remind your customers. It might be common knowledge to you, as a gas engineer, but your customers may not be aware of the potential dangers that come with boilers such as carbon monoxide poisoning.

As you know, carbon monoxide is produced as a result of the incomplete burning of natural gas; when there is not enough oxygen to produce carbon dioxide. The main factor to note is that carbon monoxide is a poisonous gas with no smell or taste making a leak hard to detect. High exposure to the gas can make people very unwell. In fact, there are approximately 25 deaths a year in England and Wales due to CO poisoning.

Symptoms of carbon monoxide poisoning include: nausea and vomiting; tiredness and lethargy; dizziness and light-headedness; stomach pain; shortness of breath and difficulty breathing. If your customer appears to have any of these symptoms - considering they don’t have the flu of course - it is important to get themselves checked out as well as their heating appliance.

It is vital to ensure your customers are aware of the preventative measures they can take to reduce the risk of being poisoned. These include having all combustion appliances such as boilers, gas fires and central heating systems installed by a Gas Safe registered installer; alongside having a yearly service on all appliances. It would also be good practice to check whether customers have a battery-operated CO detector fitted in their house when installing or checking their boiler.

Finally, as an installer it is important to recognise whether a boiler is old and how long since it was first installed. Very old boilers commonly known as ‘zombie boilers’, being 20 or more years old, can be another potential risk of a carbon monoxide leak. Quite often, the boilers appear to still be in fine working order when really, they are so outdated it is wise to replace them.

To find out more about carbon monoxide and gas safety, visit:



Address Finder
Choose an address from the list below...
Register Interest
Provide your details below and hit 'Register Interest'.

We use cookies to improve your experience, including to personalise content, to provide useful features, and to analyse our traffic and measure performance. By using this site, you agree to our use of cookies.

Cookie Preferences
Essential Cookies
Non-Essential Cookies

About Cookies and your Privacy

When you visit any web site, it may safely store or retrieve information in cookies. This information might be about you, your preferences or your device and is mostly used to make the site work as you expect it to. The information does not usually directly identify you, but it can give you a more personalised and consistent web experience.

We respect your right to privacy, so you can choose not to allow some types of cookies. Click on the different category headings to find out more and change our default settings. However, blocking some types of cookies may impact your experience of the site and the services we are able to offer. Some cookies are essential and the website would not function without them.

Always Active

Essential Cookies

These cookies are essential for the website to function and cannot be switched off in our systems.

These are usually to do with keeping track of information between page views like your privacy preferences or that you have logging in.

You can set your browser to block or alert you about these cookies, but some parts of the site will not then work. 

The essential cookies we set are:

  • PHPSESSID - A unique reference to your browser session on our website. This allows us to keep track of things like your basket and whether you are logged in. This cookie will expire after the browser is closed
  • plii - This cookie ensures you are kept logged in to the website during your session.
  • nfPP-* - These cookies store your preferences regarding cookie preferences, like if you have accepted the notice and if you have optionally disabled non essential cookies. These persist between browser sessions

Non-Essential Cookies

These cookies allow us to count visits and traffic sources so we can measure and improve the performance of our site. They help us to know which pages are the most and least popular and see how visitors move around the site. Some information these cookies collect is aggregated and therefore anonymous. If you do not allow these cookies we will not know when you have visited our site, and will not be able to monitor its performance and make improvements.

  • Facebook: We use conversion tracking from Facebook to help us understand how effective campaigns are from Facebook.
  • Google AdWords Conversion: We use conversion tracking to help us understand how effective our digital campaigns are.
  • Google Analytics: We use Google Analytics to collect information about how visitors use our website. For example, we collect details of the site where the visitor has come from and the total number of times a visitor has been to our website.
  • Google Tag Manager: We use Google Tag Manager to track user behaviour, traffic analysis and marketing optimisation.
  • LinkedIn: We use conversion tracking from LinkedIn to help us understand how effective campaigns are from LinkedIn.