Central Heating Service in London
Every radiator warm, the whole system efficient
A central heating service in London looks after the whole system, not just the boiler. Our Gas Safe registered engineers check your radiators, pipework, pump, valves, controls and magnetic filter, then bleed and balance the system so every room warms up evenly. It is ideal if some radiators are cold at the top, the pressure keeps dropping or the heating takes too long to warm up. For the boiler itself, add a boiler service to the same visit, or see our other heating services.
Our central heating service includes
EMERGENCY:
AVAILABLE 24/7
Radiators cold, pipes leaking or the heating stopped altogether? Our engineers answer emergency calls 24/7 across London, with no call-out fee and a fixed price before we start.
RADIATORS AND VALVES
- Bleeding trapped air from radiators
- Balancing so every room heats evenly
- Checking radiator valves and TRVs
- Looking for leaks and corrosion
SYSTEM WATER AND PRESSURE
- Checking and setting system pressure
- Testing inhibitor levels
- Cleaning the magnetic filter
- Checking the expansion vessel
PUMP AND CONTROLS
- Checking pump circulation and noise
- Testing zone and motorised valves
- Checking thermostats and programmers
- Advice on smart heating controls
How we service your heating system
- System check: We run the heating and check every radiator, the pump, the valves and the visible pipework for cold spots, noise, leaks and corrosion.
- Water quality: We test the inhibitor level, clean the magnetic filter and top up the inhibitor where needed to protect the system from sludge and rust.
- Bleed, balance and pressure: We bleed trapped air, balance the radiators so each room heats evenly, set the correct system pressure and check your thermostat and programmer.
Why service the whole system?
Your boiler can be in perfect order and your home still feel cold if the system around it is struggling. Air, sludge and badly balanced radiators make the boiler work harder, push up running costs and wear out the pump and valves sooner. A yearly central heating service keeps the water clean and the heat spread evenly around your home. If our checks find heavy sludge in the system, we may recommend powerflushing to clean it out properly.
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.
Why choose Jennings?
- Clear, competitive pricing
- No call-out fee, free fixed-price quotes
- Gas Safe registered engineers
- Tidy, honest and reliable
- Work guaranteed for up to 18 months
- New boiler warranties up to 18 years
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