Cold patches on the floor, rooms that never quite warm up, or an underfloor heating system that’s costing more to run than it used to — call 020 7183 4810 for a fixed-price service visit. No floors need to come up: everything we do is at the manifold and the thermostats, by Gas Safe registered engineers covering Richmond.
Cold spots on your underfloor heating?
Fixed price service visit, no floor excavation needed.
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Underfloor heating runs at lower temperatures than radiators through a manifold of narrow pipe loops, which makes it efficient but also means small faults show up as annoying symptoms rather than obvious breakdowns. Here’s what to look out for.
What your underfloor heating is telling you
- Cold spots or patches that never fully warm up. Usually trapped air in a loop, or that loop being out of balance with the rest of the system.
- The whole system takes longer to warm up, or bills have crept up. Sludge and scale building up inside the pipework restricts flow and makes your boiler work harder for the same result.
- One room heats fine while another stays cold. Usually a stuck manifold actuator or valve for that specific zone.
- A thermostat doesn’t seem to be calling for heat properly. Could be a wiring or communication fault between the thermostat and the manifold.
- Floor coverings warping, cracking or discolouring in patches. Can point to a blending valve letting water that’s too hot into the loops — worth having checked before it damages the floor further.
Why we don’t recommend the popular online fixes
| The online advice | What actually goes wrong |
|---|---|
| “Just keep bleeding the system like a radiator” | Underfloor loops need to be purged individually at the manifold with the right equipment. Treating it like a radiator bleed rarely clears a stubborn air lock and can unbalance the whole system. |
| “Turn the thermostat up to compensate for cold spots” | This masks the symptom while pushing your boiler and bills up, and can push floor temperatures higher than your flooring is rated for. |
| “Adjust the manifold valves yourself until it feels right” | Manifold flow meters need to be balanced against each room’s actual heat loss. Guesswork rebalancing can starve one room to fix another. |
| “Ignore it, it’s boiler-linked so it’s not urgent” | Because the manifold connects directly into your pressurised central heating circuit, faults here are still boiler-linked work that, under the Gas Safety (Installation and Use) Regulations 1998, only a Gas Safe registered engineer may carry out. |
Stop and call us now if…
- You notice a drop in your boiler’s system pressure alongside the cold spots
- A floor covering has started to warp, crack or discolour
- An entire room or zone has stopped heating rather than just feeling patchy
- It’s been more than 24 months since your underfloor heating was last serviced
What it costs to wait
An underfloor heating system left unbalanced tends to get less efficient every season, not more — sludge and air locks build up gradually, and your boiler quietly works harder to compensate, which shows up as a creeping rise in your bills. A blending valve fault that goes unnoticed can warp timber floors or crack tiles, which is a far more expensive fix than the service that would have caught it.
And because the system is boiler-linked, any unofficial tinkering with the manifold risks affecting your central heating warranty and safety compliance.
How Olia’s Plumbing & Heating handles it
- Diagnose. We check manifold flow, actuators and thermostat communication to find exactly what’s wrong.
- Fixed quote. One clear price before any work starts.
- Purge and balance. Each loop flushed and balanced individually at the manifold, no floors disturbed.
- Test and certify. Water quality, pressure and thermostat checks with a written service record.
- Clean finish. Everything is done at the manifold cupboard and thermostats.
- Gas Safe registered, experienced with wet and electric underfloor heating alike
- Fixed price agreed before we start
- No floor excavation for a standard service
- We service Polypipe, Nu-Heat, Warmup, Wundafloor, Uponor and other major systems
- Covering Richmond and the surrounding area
Get your underfloor heating running efficiently again.
Fixed-price service visits across Richmond.
Frequently Asked Questions
How often should underfloor heating be serviced?
We recommend every 12–24 months to keep manifold valves moving freely and prevent air locks and sludge build-up. Call 020 7183 4810 to book.
Will you need to lift my floor covering?
No — a standard service is carried out entirely at the manifold and thermostats, without touching your floor coverings.
Can you service electric as well as wet underfloor heating?
Yes, we work on both hydronic (wet, boiler-linked) systems and electric underfloor heating mats and sensors.
Why is one room colder than the rest of the house?
Usually an air lock or a stuck actuator on that room’s manifold zone — something we isolate and fix during a service visit rather than something to chase room by room yourself.
Is underfloor heating servicing the same as a boiler service?
They’re related but separate — if you need both, mention it when you call and we can often combine the visits. See our Boiler Service London page.
Book your underfloor heating service in Richmond
Call 020 7183 4810 or request a call-back for a fixed-price visit.
Related services: Boiler Service London · Boiler Repair Richmond · Gas Engineer London · Landlord Gas Inspection Central London
Peyman
CEO & Founder — Gas Safe Registered Engineer
Peyman is the founder of Olia's Plumbing & Heating, a London based team with over 15 years of hands on experience in boiler installation and repair, central heating, gas work and emergency plumbing. He personally oversees jobs across Central and West London and writes these guides to help homeowners understand their heating systems.
- Gas Safe Registered
- 15+ years experience
- Covering all of London
