Gas Detector Installation
Jennings offers gas detector installation in London, fitting carbon monoxide (CO) alarms and gas detectors in homes and businesses.
Here’s how our installation service works.
Gas Safety Services
EMERGENCY:
AVAILABLE 24/7
Gas leak, safety concern or faulty gas appliance? Our emergency gas engineers are on call 24/7.
For homes and businesses across London.
GAS INSTALLATION & SAFETY DEVICES
- Gas appliance installation for homes and businesses
- Gas detector and carbon monoxide alarm installation
- Safe connection and commissioning of gas systems
- All work by Gas Safe registered engineers
GAS METERS & REPLACEMENT
- Replacing worn or damaged gas meter boxes
- Safe removal and installation of gas components
- Better protection, access and appearance
- Suitable for domestic and commercial properties
GAS SAFETY CERTIFICATION
- CP12 gas safety certificates for landlords
- Annual gas safety inspections and reporting
- Full compliance with UK gas safety regulations
- Clear documentation for landlords and property managers
Why fit a gas or CO detector?
Carbon monoxide has no colour, taste or smell, and a gas leak can easily go unnoticed, especially while you’re asleep. A detector checks the air all the time and sounds an alarm at the first sign of danger, so you have time to act.
Why Gas Safety Matters
30%
1 in 10
30%
Up to 30% energy savings can be achieved by ensuring gas appliances run efficiently
Gas detector installation in London
Fitted, tested and explained before we leave
A Gas Safe registered engineer checks your gas appliances and the layout of the room, then fits each CO alarm or gas detector where it will work best, near the boiler, fire or cooker. We test every detector once it’s in and show you what the alarm sounds like and what to do if it goes off. Landlords in England must fit a CO alarm in any room with a fixed combustion appliance, such as a gas boiler or fire (gas cookers don’t count). We can fit alarms during your annual gas safety check.
CO alarm and detector care
A detector only protects you if it works. Test it regularly, replace the batteries when needed and replace the whole unit by the date shown on it.
Jennings can look after this for you. Our engineers test your alarms, change batteries, replace units that have reached the end of their life and check each one is in the right place. If you think you already have a leak, our gas leak detection service can find it.
Areas we cover
From busy city hubs to peaceful suburban neighborhoods, we’ve got London covered. Our expert property maintenance services ensure your home or business stays in top condition, no matter where you are in Greater London.
The Jennings Guarantee
Six promises we make to every customer

Clear, competitive pricing
No hidden extras. You get a clear quote and a fair price before any work starts.

No call-out fee, free fixed-price quotes
We never charge a call-out fee, so you only pay for the work. Quotes are free, fixed-price and with no obligation.

Gas Safe registered engineers
Your gas work is done by qualified, experienced Gas Safe registered engineers who do the job properly.

Neat, tidy, honest and reliable
We respect your home or business, keep the work area clean and leave it as tidy as we found it.

Work guaranteed for up to 18 months
All our work is guaranteed for up to 18 months, so if anything we've done goes wrong, we'll come back and put it right.

New boiler warranties up to 18 years
New boilers we fit come with a manufacturer-backed warranty of up to 18 years, depending on the boiler.
Need heating supplies?
Our shop on Lupus Street in Pimlico stocks quality plumbing, heating and electrical supplies from trusted brands. Tradespeople and DIYers are both welcome, and our team is always happy to give advice.