When booking in your boiler service at the same time as a gas safety certificate (CP12) with Gas Safety Landlords you will receive free carbon monoxide alarm (*Terms and conditions apply). The price for a Carbon Monoxide alarm is normally £22.50 including delivery charge (excluding VAT).

An audible carbon monoxide alarm is a great way to ensure you’re immediately alerted to any carbon monoxide in your home by sounding when it detects Carbon Monoxide, even on a small scale.

Why would you require free carbon monoxide alarm – what are the dangers of Carbon Monoxide:

In England on a yearly basis there are approximately 400 admissions to hospital from Carbon Monoxide poisoning and around 40- 50 deaths.

Carbon Monoxide is a colourless and odourless gas, which makes its presence difficult to detect without a carbon monoxide detector.

Symptoms of mild Carbon Monoxide poisoning:

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  • Headache
  • Nausea
  • Dizziness
  • Abdominal pain
  • Sore throat
  • Dry cough


The symptoms of mild Carbon Monoxide poisoning can be similar to that of a cold/ flu or food poisoning; however Carbon Monoxide poisoning will not give you a high temperature.

However, in children they are similar to a bad stomach:

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  • Nausea
  • Vomitting


Symptoms of severe Carbon Monoxide poisoning:

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  • Fast and irregular heart rate
  • Hyperventilation
  • Confusion
  • Drowsiness
  • Difficulty breathing
  • Seizures and loss of consciousness may also occur


Other symptoms that may occur weeks or even months later are

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  • Confusion
  • Loss of memory
  • Problems with coordination


The severity of Carbon Monoxide poisoning depends on the following:

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  • How much Carbon Monoxide is present
  • How long you were exposed to the Carbon Monoxide
  • The age of the individual concerned – elderly, children and the foetus are at greater risk
  • Your general health
  • How much physical activity you do – effects are increased with higher activity levels.


Your free Carbon Monoxide alarms can prevent all of the above from occurring by alerting you to the Carbon Monoxide being present and giving you the opportunity to get out of the property and have the Carbon Monoxide leak repaired.

What are the causes of Carbon Monoxide poisoning:

Faulty central heating systems, gas appliances and fires, blocked flues and chimneys are common sources of carbon Monoxide within a home.

Fitting your free Carbon Monoxide alarms:

Setting up and installing your free Carbon Monoxide alarms is very straight forward and will be explained to you in the manufacturer’s instructions enclosed with it.
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  • Place the alarm in a central location, like a hallway or landing
  • Attach the alarm to a wall at head height; don’t fix it to the ceiling.
  • Place the alarm at least a metre away from your gas boiler, cooker, fire or heater, and away from areas with high condensation, like a bathroom or kitchen.
  • Test your alarm regularly and always ensure the batteries are not running low.


* This deal is for one free Carbon Monoxide alarm per household. Any additional required will be chargeable at £22.50 excluding VAT per item.

Customer Reviews

Gas Safety Landlords

Customer Reviews

Bayo Adgega

Apart from my engineer running late due to traffic, my service went well and I am now waiting for my certificate, thanks for your help :)

Barbara Thompson

Good service and a brilliant company. For my location being on the edge of London is complicated for property services especially as engineers do not wish to travel that far. GSL got an engineer out the next day after booking, he was on time, completed the job nearly instantly and he was gone. I got my certificate 48 hours later and there was no complications. They say if it's too good to be true it probably is right? Not in this case! Cheers.

Michael Baldacchino

The feedback I have is only positive, the engineer was a quality chap and my gas certificate came on time after it was completed. Ill definitely consider your company shouldd I require a similar service.

isidro rotolo

Great service, professional staff and quick response time, impressive! I will be contacting you again soon.

Bruce Dennosa

Gas safety check completed by a gas safe registered engineer, which makes it a gas safe property. Thanks again.

Pal Supply

Completing my CP12 has put me at ease, knowing it needs to be renewed feels like your on a time limit before your gas appliances go crazy. But it's all done now, thanks! :)

Ashley Pickham

So relieved I spent my money on the right things. Great company and I got a great service, thank you.

Arnold Brenden

The discount provided was good, the service was even better! Thank you for your help guys.

Anya Sheifler

I was without an up to date gas certificate for my property for 2 days but you guys done the best you could and booked me in the earliest slot possible, thanks for being keen in helping me and finally completing the job.

Anthony Bug

I was politely asked to leave a review about my experience with gas safety landlords. It was without flaws, they were professional and punctual and the service was completed and passed successfully. Thanks.