Low pressure in Harlow? Boiler repairs sorted properly
Boiler dropping pressure in Harlow? If you're topping up more than once a month, you have a leak somewhere — often tiny and hidden. We track it down rather than just keep refilling. Most 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 Harlow
Not a national chain — your local engineer, your local prices.
Boiler dropping pressure in Harlow? If you're topping up more than once a month, you have a leak somewhere — often tiny and hidden. We track it down rather than just keep refilling. Most Harlow repair callouts we diagnose and fix on the first visit — common parts (PRVs, diverters, pumps, PCBs) live on the van.
From first call to handover — our boiler repairs routine
Fast response
Same-day where possible — especially for vulnerable customers or no-heat in winter.
Honest diagnosis
If your boiler is past saving, we'll tell you. We won't sell you a £400 repair on a 16-year-old unit.
Repair, replace, or part-exchange
Three options where appropriate, with honest cost/benefit on each.
Aftercare
We log the repair, register the parts warranty, and give you a service reminder.
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 makes our boiler repairs work different in Harlow
Three things Harlow customers tell us they value: we turn up when we say we will, we explain things in plain English, and we don't try to sell you anything you don't need.
Diverter valve and PCB faults are particularly common across Harlow's older Worcester 24i and Vaillant ecoTEC units installed in the 2008–2014 boom.
Everything we do is Gas Safe registered, fully insured, and backed by a 12-month workmanship guarantee.
About Harlow
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 you get when you book us
- Fixed price before any work starts
- 12-month repair guarantee
- Real human on the phone, not an answering service
- All major brands — Worcester, Vaillant, Ideal, Baxi, Glow-worm
- Vulnerable household priority response
Quick answers on boiler repairs in Harlow
Is it dangerous to keep topping up?▾
Not immediately — but the cause needs finding. Repeated top-ups mean fresh oxygenated water keeps entering the system, which corrodes radiators and pumps from the inside.
Where do hidden leaks usually hide?▾
Pressure relief valve discharging outside, perished pump seals, pinhole leaks at radiator valves, or a failing expansion vessel. Each one has a different fix.
Do you charge a callout fee?▾
We charge a clear diagnostic fee (told to you upfront before we attend). It covers proper on-site diagnosis. The repair itself is then quoted as a fixed price you agree before any work starts.
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.
What else we can help with in Harlow
Boiler installs in 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 Harlow
Annual servicing keeps your boiler safe, efficient, and your manufacturer warranty valid. Full inspection, combustion analysis, and a written report.
Heating upgrades in Harlow
Cold radiators, noisy systems, sky-high bills? Power flushes, smart thermostats, radiator swaps and full system upgrades that pay for themselves.
Plumbing in 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 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 Harlow customers find us for boiler repairs
Same engineer, same fixed pricing — different question, different answer.
Villages near Harlow we also cover
Fix the pressure drop in Harlow
Free written quote, no obligation. Real engineer, fixed price, fast response.