Gas Engineers in London
Need a Gas Safe registered gas engineer in London? Jennings carries out gas safety checks, landlord CP12 certificates, gas appliance installations and emergency repairs for homes and businesses across the capital, with no call-out fee and free, fixed-price quotes.
Gas safety in London
Our Gas Safe registered engineers work for homeowners, landlords and businesses in Hammersmith, Chelsea and right across London, making sure your boiler, cooker and other gas appliances are safe and working as they should.
Our gas services
EMERGENCY:
AVAILABLE 24/7
Smell gas, or worried about a faulty appliance? Our emergency gas engineers answer calls day and night.
Available 24/7 for homes and businesses.
GAS INSTALLATION & SAFETY DEVICES
- Gas appliance installation for homes and businesses
- Gas detector and carbon monoxide alarm fitting
- Safe connection and commissioning of gas appliances
- All work done by Gas Safe registered engineers
GAS METER BOX REPLACEMENT
- Replacement of worn or damaged gas meter boxes
- Careful removal of the old box and a secure new fit
- Better protection, easier access and a neater look
- Suitable for homes and business premises
GAS SAFETY CERTIFICATION
- Landlord CP12 gas safety certificates
- Annual gas safety checks with a written record
- Work to current UK gas safety regulations
- Clear paperwork for landlords and property managers
Gas safety checks
A gas safety check is more than a quick look at the boiler. Our engineers test your appliances, flues and pipework with specialist equipment to spot problems early, before they lead to gas leaks, carbon monoxide or a breakdown.
You get a clear record that your gas appliances and pipework meet current safety standards, whether you need it for compliance or peace of mind.
Why gas safety matters
30%
1 in 10
30%
Up to 30% energy savings can be achieved by ensuring gas appliances run efficiently
Gas and carbon monoxide detectors
Early warning of gas and CO
Carbon monoxide has no colour or smell, so a detector is the only way to know it’s there. We fit gas and carbon monoxide detectors that pick up leaks and dangerous gas levels at the earliest stage.
Once fitted, they keep watch day and night and sound the alarm straight away, protecting the people in your home or building.
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.
Gas meter box replacement
Is your gas meter box cracked, broken or looking tired? We replace damaged and outdated meter boxes to protect the meter, make it easier to get to and tidy up the outside of your property.
Every new box is fitted carefully and securely, so it lasts for years and leaves a neat, professional finish.
Why choose Jennings?
- Clear, competitive pricing
- No call-out fee, free fixed-price quotes
- Qualified, Gas Safe registered engineers
- A tidy, honest and reliable team
- Workmanship guaranteed for up to 18 months
- New boiler warranties up to 18 years
Landlord CP12 gas safety certificates
If you let a property, the law requires a gas safety check every 12 months and a CP12 gas safety certificate. Jennings handles the whole landlord CP12 service for you, from inspection and testing to the certificate itself, with as little disruption to your tenants as possible.
Our Gas Safe engineers keep your rental property safe, compliant and protected against legal risk.
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.
See what our valued customers have to say
EXCELLENT
Based on 323 reviews
Posted on Google![]()
Uncovered - The Electric Rock ExperienceTrustindex verifies that the original source of the review is Google.
Amazing as always!Posted on Google![]()
Bronnie BaynesTrustindex verifies that the original source of the review is Google.
Amazing communication and good availability. plumber was extremely professional and arrived on time. Wish there was a bit more transparency on additional payments ie. parking and sealant.Posted on Google![]()
Sue DaviesTrustindex verifies that the original source of the review is Google.
Jennings are incredibly efficient and helpful. They’ve completed my boiler service and organised the necessary plumbing and electrical certifications . Great after sales service.Posted on Google![]()
Diana GouldTrustindex verifies that the original source of the review is Google.
Excellent job. Solved a long standing problem quickly and effectively. 100% recommend 👍Posted on Google![]()
Paul GrecianTrustindex verifies that the original source of the review is Google.
What a fantastic company! From my first conversation with Sian to installation of my new Vaillant boiler they have been absolutely brilliant. Sian responded instantly via What's App when ever I had a question regarding pricing and installation. Sam the installer and his colleague with very friendly, professional, tidy and talked me through the full installation once completed. I have already given contact details to some of my work colleague's this morning. I will use them to service my boiler going forward in the future and for any other plumbing needs. Absolutely 1st Class Company!Posted on Google![]()
Brenda ZangTrustindex verifies that the original source of the review is Google.
Excellent service from start to finish. Had a new boiler installed and a full power flush carried out. Everything was done professionally, efficiently, and to a very high standard. The team were friendly, tidy, and kept us informed throughout. Highly recommend!Posted on Google![]()
Sam HarveyTrustindex verifies that the original source of the review is Google.
Easily one of the best experiences I’ve had with tradesmen. Sian was super friendly and helpful, and then Harry showed up early, fixed the issue promptly and was a legend! Highly recommended.Posted on Google![]()
Joe CarreiroTrustindex verifies that the original source of the review is Google.
Service was professional and friendlyPosted on Google![]()
Olive Tree HouseTrustindex verifies that the original source of the review is Google.
I’ve been dealing with ongoing pump issues for as long as I can remember, and after multiple visits from different plumbers, nothing ever fully got resolved. Harry from Jennings was the first to actually diagnose the problem and sort it in one visit. Professional, efficient, and clearly knows his craft inside out. I couldn’t recommend Jennings more highly.Posted on Google![]()
Stella OforiTrustindex verifies that the original source of the review is Google.
Tristan was very polite, friendly and very professional. He is also very good at his job and very efficient. Very happy with the service