Frozen condensate in Harlow? Boiler repairs sorted properly
If your boiler in Harlow stopped working in cold weather and is showing a fault code, the condensate pipe outside has likely frozen. We can talk you through thawing it on the phone, or come out and lag it properly so it doesn't happen again. 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.
If your boiler in Harlow stopped working in cold weather and is showing a fault code, the condensate pipe outside has likely frozen. We can talk you through thawing it on the phone, or come out and lag it properly so it doesn't happen again. Most Harlow repair callouts we diagnose and fix on the first visit — common parts (PRVs, diverters, pumps, PCBs) live on the van.
What to expect on a boiler repairs job in Harlow
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.
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
Harlow homeowners trust us for boiler repairs — here's why
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.
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 moreThings Harlow customers usually ask about boiler repairs
How do I thaw it myself?▾
Pour warm (not boiling) water along the external condensate pipe, especially at any low points or bends. Then reset the boiler. We'll happily walk you through it on the phone.
How do I stop it freezing again?▾
We can re-route the condensate to drain internally, fit a wider-bore external section, or lag the existing pipe properly. The right fix depends on your install.
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.
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.
What you get when you book us
- Vulnerable household priority response
- Real human on the phone, not an answering service
- Same-day response wherever possible
- 12-month repair guarantee
- Stocked van — most repairs done first visit
Our other services for Harlow homes
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
Thaw and protect your condensate pipe in Harlow
Free written quote, no obligation. Real engineer, fixed price, fast response.