Low pressure in Ongar? Boiler repairs sorted properly
Boiler dropping pressure in Ongar? 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 Ongar 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 Ongar
Not a national chain — your local engineer, your local prices.
Boiler dropping pressure in Ongar? 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 Ongar repair callouts we diagnose and fix on the first visit — common parts (PRVs, diverters, pumps, PCBs) live on the van.
Why we're a sensible choice for boiler repairs in Ongar
Three things Ongar 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.
For boiler repairs specifically, that means honest advice on whether to repair, replace, or upgrade — not a default sales pitch.
Everything we do is Gas Safe registered, fully insured, and backed by a 12-month workmanship guarantee.
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 moreAbout Ongar
Period centre, mixed-age outskirts, and rural off-grid hamlets.
- LPG and oil boiler servicing on the rural fringe
- Conservation-area flue planning
- Listed property compliance
What you get when you book us
- Honest 'is it worth fixing?' advice
- 12-month repair guarantee
- All major brands — Worcester, Vaillant, Ideal, Baxi, Glow-worm
- Vulnerable household priority response
- Stocked van — most repairs done first visit
Our boiler repairs process, step by step
Phone diagnosis
Quick chat first — sometimes we can talk you through a reset and save you the callout.
On-site diagnosis
Fixed diagnostic fee (told to you upfront). We find the actual fault, not guess.
Fixed repair price
You get a fixed quote before any tools come out. No 'while I'm here' surprises.
Repair & test
Fixed, tested, pressure checked, and we make sure it stays fixed before we leave.
Common questions about boiler repairs in Ongar
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 Ongar
Boiler installs in Ongar
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 Ongar
Annual servicing keeps your boiler safe, efficient, and your manufacturer warranty valid. Full inspection, combustion analysis, and a written report.
Heating upgrades in Ongar
Cold radiators, noisy systems, sky-high bills? Power flushes, smart thermostats, radiator swaps and full system upgrades that pay for themselves.
Plumbing in Ongar
Everyday plumbing done properly — taps, toilets, leaks, washing machines, showers, outside taps and isolation valves.
Other places we work close to Ongar
At a glance
- Service
- Boiler Breakdowns & Repairs
- Coverage
- Ongar (CM5) and surrounding areas
- Response time
- Usually within 24–48 hours
- Credentials
- Gas Safe registered, fully insured, 12-month workmanship guarantee
- Pricing
- Fixed written quotes, no surprise extras
Roughly what you'll pay in Ongar
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 Ongar customers find us for boiler repairs
Same engineer, same fixed pricing — different question, different answer.
Villages near Ongar we also cover
Fix the pressure drop in Ongar
Free written quote, no obligation. Real engineer, fixed price, fast response.