Stelrad Boiler Repairs London

Stelrad Boiler Repair London

Stelrad makes radiators, not boilers – here’s what you need to know.

Jump to:
What Is Stelrad? –
Radiator Problems –
Need Boiler Help? –
Our Services

What Stelrad Actually Makes

Stelrad is one of the UK’s largest radiator manufacturers – they do not make boilers. If you have Stelrad branding in your home, it will be on:

• Panel radiators: the standard convector radiators found in most UK homes.
• Compact radiators: space-saving designs for smaller rooms.
• Towel rails: heated rails for bathrooms.
• Designer radiators: vertical and feature radiators.

Your boiler is a separate appliance. The boiler heats the water that circulates through your radiators. If you’re having heating problems, the issue could be with your boiler, your radiators, or the pipework and controls connecting them.

Common Radiator Problems

If your Stelrad radiators aren’t working properly, here are typical issues:

• Cold at the top: air trapped in the radiator – needs bleeding.
• Cold at the bottom: sludge build-up restricting flow – may need a power flush.
• Completely cold: could be a stuck valve, airlock, or boiler/pump issue.
• Leaking from the valve: valve seal or connection issue.
• Leaking from the body: corrosion – radiator may need replacing.
• Some radiators hot, others cold: system balancing issue or circulation problem.
• Noisy radiators: trapped air, pump speed issues, or pipework problems.

Quick Checks for Radiator Problems

1. Check the thermostatic valve (TRV): make sure it’s turned up, not set to frost protection or off.
2. Check the lockshield valve: the valve at the other end should be open (usually requires a spanner to adjust).
3. Try bleeding the radiator: use a radiator key to release trapped air from the bleed valve at the top.
4. Check your boiler: is it firing up? Is the pump running? Are other radiators working?
5. Check the programmer/thermostat: is the heating actually calling for heat?

Need Help With Your Boiler?

If the problem is with your boiler rather than your radiators, check what brand is on the boiler itself and visit the relevant page:

Not sure what’s causing the problem? Simply contact us and describe what’s happening – we’ll help you identify whether it’s a boiler, radiator, or system issue.

How We Can Help

Whether your problem is with boilers, radiators, or the system as a whole, we offer:

Radiator services:

• Bleeding radiators and system venting
• Replacing faulty radiator valves (TRVs and lockshields)
• Radiator replacement and upgrades
• Adding radiators to existing systems
• System balancing to ensure even heat distribution

System cleaning:

• Power flushing to remove sludge and improve circulation
• Magna cleanse and system filtration
• Inhibitor treatment to protect against future corrosion

Boiler services:

• Boiler repairs for all major brands
• Annual servicing to maintain efficiency and safety
• New boiler installation when replacement is needed

What Happens When You Call Us

Here’s our approach:

1. We understand the symptoms: which radiators aren’t working, what’s happening with your boiler, any noises or leaks.
2. We identify the cause: is it a radiator issue, a boiler problem, or a system-wide circulation issue?
3. We explain your options: simple fix, power flush, component replacement, or system upgrade.
4. We provide clear pricing: fixed quotes for defined work, no surprises.

Landlords: System Maintenance Matters

If you’re a landlord, keeping radiators and heating systems in good condition is essential:

• Tenant comfort: cold radiators generate complaints quickly.
• System longevity: regular maintenance prevents expensive breakdowns.
• Efficiency: clean systems cost less to run.

We support landlords across London with Gas Safety Certificates (CP12) and heating system maintenance. See our London landlord checklist.

London Wide Coverage

We cover all London boroughs for boiler and heating system services. See our London coverage page.

Related Services