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The 24 Hour Boiler Repairs call centre is open right around the clock. Our team of friendly operators are on hand to take your call and dispatch a highly trained engineer to your door. Our commitment to dealing quickly with all boiler emergencies, regardless of when or where they happen, means we have one of the best response times around. So, rest assured, when you get in contact with 24 Hour Boiler Repairs, your problem will be dealt with at speed by a team of highly skilled professionals. If you have an issue with your heating system, get in touch straight away.

Address
24 Hour Boiler Repairs
86-90 Paul Street
London
EC2A 4NE

Phone
0203 868 6251

Email
info@24hourboilerrepairs.co.uk

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Need a Gas Safe engineer in London ASAP? Call us 24 Hours a day!

Warmflow

Warmflow Boiler Repairs London

OFTEC and Gas Safe registered engineers · 24/7 call handling · London wide

Older Warmflow boiler? We can assess whether a safe repair is sensible or whether replacement is better value.

  • Experienced Warmflow Boiler Repairs specialists
  • Available 24 hours a day, 7 days a week
  • Insurance approved
  • All parts guaranteed for a year
  • Fully Gas Safe trained engineers

Lines open now

0203 868 6251

Have your Warmflow model and symptoms ready.

★★★★★4.6/5 on Google

We cover Warmflow boiler repairs in London, including oil boiler lockouts, no heating, no hot water, burner faults and pressure problems. Some older Warmflow boilers can be repaired, but parts availability can vary by model and age. We will advise the safest, most cost-effective next step after inspection.

Safety First

Smell oil or fumes? Turn off the boiler at the controls. Open windows. Do not attempt to restart. Call an engineer.

CO alarm sounding? Stop using the boiler. Open doors and windows. Leave the property. Call 999. If anyone is drowsy, breathless or has a headache, tell the operator. Do not re-enter until you are told it is safe.

Boiler leaking heavily? Turn off the boiler at the controls. If safe, turn off the water supply. Call an engineer.

For gas appliances: If you smell gas, turn off the gas supply at the meter if it is safe to do so. Open windows. Leave the property. Call the National Gas Emergency Service on 0800 111 999.

★★★★★Friendly, punctual service and laid out all the costs beforehand which was helpful.Emma Courtney · Google review★★★★★Resourceful and helpful with the issue we had with our boilerKatarina Jezovnik · Google review★★★★★Perfect service and professional engineer!Halil Atarkan · Google review

Quick Checks Before You Call

Before calling an engineer, these safe checks may resolve simple issues with your Warmflow boiler.

Check the oil supply

Is there oil in the tank? Check the gauge. If the tank ran dry, air may be in the fuel line.

Check the pressure gauge

Pressure should read around 1.0 to 1.5 bar when cold. If low, top up via the filling loop.

Check the thermostat and timer

Is the room thermostat set above current temperature? Is the heating scheduled to be on?

Try a single reset (oil burner)

If the burner has locked out, locate the reset button on the burner control box. Press once and wait. Do not press more than twice. If it locks out again, call an engineer.

Gas Safe registered boiler engineers

Fully Gas Safe trained engineers

Every gas repair is carried out by a Gas Safe registered engineer. You are told what needs doing and what it costs before anything starts.

★★★★★4.6/5 on Google

Common Warmflow Boiler Faults

Warmflow boilers use indicator lights and burner lockout conditions rather than digital fault codes on most models. Common symptoms include:

Burner lockout

Oil burner fails to ignite or flame is lost during operation. May be blocked nozzle, dirty photocell, air in fuel line, or ignition electrode fault. Try one reset. If it locks out again, call an engineer.

No heating or hot water

Check oil supply, thermostat, and programmer. If the burner fires but radiators stay cold, there may be a circulation or valve fault.

Low pressure

Pressure dropping repeatedly may indicate a leak in the system. An engineer can pressure test to find the source.

Boiler making noise

Rumbling or banging may indicate combustion issues or sludge in the system. Requires engineer investigation.

Note: Warmflow boilers vary by model and age. Tell us the model and what the burner is doing and we will advise the safest next step.

Not sure which fault you have?

Call with your model and what the burner is doing. We will tell you what is likely involved before anyone attends.

0203 868 6251

Warmflow Models We Cover

Our engineers work on Warmflow oil and gas boilers including:

Warmflow boiler repairs London We repair every Warmflow model Current ranges and older units, subject to parts availability
Agentis range Agentis 15-21, Agentis 21-26, Agentis 26-33 (oil combi)
Kabin Pak range Kabin Pak, Kabin Pak S (external oil)
Utility range Utility HE, Utility HE Plus
System boilers B Series, U Series
Other models Older Warmflow oil and gas units

Warmflow is manufactured in Craigavon, Northern Ireland. Parts availability for older models can vary. We stock common spares but some components may require sourcing.

Repair or Replace Your Warmflow Boiler?

Warmflow is a Northern Ireland manufacturer producing oil and gas boilers. Many Warmflow oil boilers installed in the 2000s are now 15 to 20 years old. Whether to repair or replace depends on the fault, the model, and parts availability.

When repair may be sensible

  • Minor component failure (nozzle, photocell, electrode, pump)
  • Parts are available and the boiler is under 15 years old
  • First breakdown after years of reliable service

When replacement is often better value

  • Repeat lockouts or multiple faults
  • Major component failure (heat exchanger, burner motor, control box)
  • Parts are obsolete or require long lead times
  • Boiler is over 20 years old
  • Repair cost approaches a significant share of a replacement quote

We will advise honestly after inspection. There is no pressure to replace if a repair is practical.

Replacement Options

If your Warmflow boiler is 15 to 20 years old or parts are difficult to source, a replacement survey is often the fastest route to certainty. See boiler installation London.

Oil vs gas If you currently have an oil boiler and gas is available, switching to gas may reduce running costs and maintenance. We can advise on both options.
Combi vs system boiler We survey your property to recommend the right type, output, and controls for your needs.
Modern efficiency Replacing an older oil boiler with a new condensing unit can significantly improve efficiency and reduce fuel costs.
System protection We recommend a powerflush when fitting a new boiler to remove sludge and protect the new unit.

Annual Servicing

Oil boilers require annual servicing to maintain efficiency and prevent breakdowns. Book a service.

Landlords and Letting Agents

We provide boiler repairs and gas safety certification for landlords across London. See Landlord gas safety certificate (CP12).

London based boiler repair engineers

Warmflow Repairs Across London

We cover Warmflow boiler repairs and replacements across all London boroughs. See our full coverage area.

Have your postcode and the model ready and we will confirm the quickest appointment slot.

Related Services

Emergency boiler repairs Breakdowns, lockouts and leaks Boiler servicing London Annual service and safety checks Boiler installation London Replacements and new fitting Power flush London Cold radiators and system sludge Landlord gas safety certificate (CP12) Certification across London London areas we cover Book an engineer in your borough

What customers say

Verified Google reviews. 4.6 out of 5.

★★★★★

Great guy on time true professional resolve the issue same day

David BrazierGoogle review
★★★★★

Perfect service and professional engineer!

Halil AtarkanGoogle review
★★★★★

Engineer very helpful and time efficient

Fiona GaylorGoogle review

Speak to Our Team

Lines are open 24 hours. Tell us the model and symptoms. We will advise whether repair or replacement is the better option and, if needed, send an engineer.

Call 0203 868 6251

Book an Engineer ›

OFTEC and Gas Safe registered · 24/7 call handling · Quote before work
24 Hour Boiler Repairs, 86-90 Paul Street, London EC2A 4NE
CALL Call us for Warmflow Boiler Repairs
Call us 24 Hours a day

Trusted 24 hour boiler repairs - call 0203 868 6251

Specialist for all boilers including:

Google reviews

★★★★★4.6/5 on Google
★★★★★

Really impressed with the boiler repair service. Clear communication from the start and no surprises with pricing. The engineer was friendly, knowledgeable and got everything sorted efficiently.

Nishanth ThachemaGoogle review
★★★★★

Booked them in for a power flush after ongoing heating issues. The engineer was very thorough and explained what was being done at each stage. We noticed a huge difference in how quickly the radiators now heat up.

S ThanuGoogle review
★★★★★

Good value for money & was able to sort out my boiler quickly by ordering next day delivery for broken parts. Friendly, punctual service and laid out all the costs beforehand which was helpful. Would recommend.

Emma CourtneyGoogle review

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