Glow-worm boiler repairs in Old Harlow
Glow-worm boilers fitted, serviced and repaired across Old Harlow. Glow-worm is part of the Vaillant group — strong shared parts availability and a solid budget option for landlord and rental installs. Most Old Harlow repair callouts we diagnose and fix on the first visit — common parts (PRVs, diverters, pumps, PCBs) live on the van.
You're not getting a call centre — you're getting Grant.
The same engineer quotes the job, does the work, and answers the phone afterwards if anything's not right.
Gas Safe Registered
Every gas job legally signed off
18+ years on the tools
Grant has been fixing boilers in Harlow since before smart thermostats existed.
Real human on the phone
Most calls answered the same day, often within the hour.
Locally based in Old Harlow
Not a national chain — your local engineer, your local prices.
Glow-worm boilers fitted, serviced and repaired across Old Harlow. Glow-worm is part of the Vaillant group — strong shared parts availability and a solid budget option for landlord and rental installs. Most Old Harlow repair callouts we diagnose and fix on the first visit — common parts (PRVs, diverters, pumps, PCBs) live on the van.
Trusted for boiler repairs across Old Harlow
Our boiler repairs work in Harlow is built around three things: doing it properly, charging fairly, and being there afterwards if you need us.
Diverter valve and PCB faults are particularly common across Harlow's older Worcester 24i and Vaillant ecoTEC units installed in the 2008–2014 boom.
If something plays up in the first year, we come back and sort it. No quibbles, no callout fee.
About Old Harlow
The historic centre of Harlow with period properties pre-dating the new town. Conservation considerations affect external flue placement.
Predominantly 1950s–70s post-war housing with a mix of terraces, semis, and 60s-built flats. Pockets of older stock around Old Harlow.
- Original 1960s flats often have undersized gas supply pipes that limit modern combi performance
- Older Old Harlow properties frequently have low mains water pressure that affects combi choice
- Many 60s/70s back boilers still in service — our regular work involves removing these and reinstating fireplaces
What's included
No Hot Water Repair
Diverter valves, diaphragms, PCBs — the common combi hot water faults.
Learn moreNo Heating Repair
Pump faults, airlocks, frozen condensates — getting heat back on quickly.
Learn moreLeaking Boiler Repair
Pressure valves, heat exchangers, pump seals — sealing leaks safely.
Learn moreBoiler Fault Code Diagnosis
F1, F22, EA, A01 — translating fault codes into real fixes.
Learn moreWhat you get when you book us
- 12-month repair guarantee
- Stocked van — most repairs done first visit
- Real human on the phone, not an answering service
- Same-day response wherever possible
- Vulnerable household priority response
Working with us on a boiler repairs job in Old Harlow
We pick up
Real person, not an answering service. We give you an honest arrival window.
We diagnose properly
Combustion analyser, multimeter, pressure gauges — proper diagnostic kit, not guesswork.
You get a price
Written, fixed, agreed before we proceed. Walk away free if you'd rather.
We fix it & guarantee the work
12-month guarantee on the repair. If the same fault comes back, we come back.
Things Old Harlow customers usually ask about boiler repairs
Are Glow-worm and Vaillant the same?▾
Same parent group, often shared componentry, but Glow-worm sits at a lower price point with shorter warranties. Good value for rental properties.
Is it worth repairing an old boiler?▾
Honest answer: if it's over 12 years old and the repair is more than £400, replacement usually makes more financial sense. We'll lay out both options without pressure.
How fast can you come out?▾
We aim for same-day on no-heat and no-hot-water situations. Tell us when you call if anyone elderly or with young children is in the property — we prioritise.
Our other services for Old Harlow homes
Boiler installs in Old Harlow
Worcester, Vaillant, Ideal and Glow-worm boilers fitted by Gas Safe registered engineers — sized properly, fitted neatly, and backed by manufacturer warranties of up to 12 years.
Boiler servicing in Old Harlow
Annual servicing keeps your boiler safe, efficient, and your manufacturer warranty valid. Full inspection, combustion analysis, and a written report.
Heating upgrades in Old Harlow
Cold radiators, noisy systems, sky-high bills? Power flushes, smart thermostats, radiator swaps and full system upgrades that pay for themselves.
Plumbing in Old Harlow
Everyday plumbing done properly — taps, toilets, leaks, washing machines, showers, outside taps and isolation valves.
At a glance
- Service
- Boiler Breakdowns & Repairs
- Coverage
- Harlow (CM17, CM18, CM19, CM20) and surrounding areas
- Response time
- Same-day where possible
- Credentials
- Gas Safe registered, fully insured, 12-month workmanship guarantee
- Pricing
- Fixed written quotes, no surprise extras
Roughly what you'll pay in Old Harlow
These are honest starting prices for jobs we do every week. Final quote depends on your property — we'll always confirm in writing before any work starts. No surprise add-ons.
| Job | Price |
|---|---|
Diagnostic call-out first hour on-site, transparent before any parts | from £85 |
Common parts (PCB, fan, pump) fitted same-visit where possible | £140–£380 |
No-heat / no-hot-water emergency same-day priority slot | from £120 |
Quote over the phone send a photo of the fault code | free |
Prices include VAT. Parts quoted separately and shown on your written quote.
Other ways Old Harlow customers find us for boiler repairs
Same engineer, same fixed pricing — different question, different answer.
Villages near Old Harlow we also cover
Glow-worm cover for Old Harlow
Free written quote, no obligation. Real engineer, fixed price, fast response.