Leaking in Great Dunmow? Boiler installs sorted properly
A leaking boiler or pipe in Great Dunmow needs sorting before it damages floors, ceilings or pipework around it. We respond fast, find the actual source (not just where the water shows), and fix it properly — soldered or pressed copper, never just a clamp. For full installs in Great Dunmow we'll size the boiler against your real demand, not just like-for-like swap whatever's on the wall.
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 Great Dunmow
Not a national chain — your local engineer, your local prices.
A leaking boiler or pipe in Great Dunmow needs sorting before it damages floors, ceilings or pipework around it. We respond fast, find the actual source (not just where the water shows), and fix it properly — soldered or pressed copper, never just a clamp. For full installs in Great Dunmow we'll size the boiler against your real demand, not just like-for-like swap whatever's on the wall.
About Great Dunmow
Period centre, rural hamlets, and modern family housing on the periphery.
- Listed property heating compliance
- LPG and oil servicing
- Modern combi installs
What's included
Combi Boiler Installation
Single-unit installs for most 1–3 bathroom homes — no tank needed.
Learn moreSystem Boiler Installation
For larger homes with multiple bathrooms and high hot water demand.
Learn moreRegular (Heat-Only) Boiler Replacement
Like-for-like swaps for older conventional systems with tank and cylinder.
Learn moreBack Boiler Replacement
Removing fireplace back boilers and replacing with modern combi or system units.
Learn moreLocal, honest boiler installs for Great Dunmow homes
We've been doing boiler installations in Great Dunmow long enough to know which streets have shared chimneys, which estates have undersized gas supplies, and which boilers tend to fail first.
That experience means we get the spec right at the survey, not halfway through the install.
And we don't cut corners on the bits you can't see — proper pipework, magnetic filter, full system flush where needed.
What happens when you book boiler installs with us
Site visit
We measure up, check radiator output, and confirm the gas pipe size is right — undersized supply pipes are the most common reason boilers underperform after install.
Quote & options
Two or three boiler options at different price points so you can pick what fits your budget.
Install
Old boiler removed, new one fitted, system flushed, controls set up. Usually a single day for a straight swap, two for a full system change.
Aftercare
Annual service reminders, plus a real human at the end of the phone if anything plays up.
Common questions about boiler installs in Great Dunmow
Where do boiler leaks usually come from?▾
Most common: pressure relief valve discharging because system pressure is too high, a perished pump seal, or a failing heat exchanger on older units. We diagnose properly rather than guess.
Should I turn the boiler off?▾
If water is actively dripping and you can see it pooling, yes — switch the boiler off at the spur, and turn the system pressure down via the filling loop if you can. Then call us.
How much does a new boiler cost fitted?▾
Most combi swaps run £2,200–£3,800 fitted depending on brand and any system upgrades. We give you a written fixed price after a free survey — no obligation.
How long does a boiler install take?▾
A straight combi swap is usually one day. A boiler relocation, conversion, or full system change is typically 1–3 days.
What you get when you book us
- Vaillant Advance approved
- Fixed written quotes — no surprise extras
- Worcester Bosch Accredited Installer
- Family-run, no commission-driven sales
- Magnetic filter fitted as standard
Other plumbing & heating work we do in Great Dunmow
Boiler repairs in Great Dunmow
No heating or hot water? We respond fast — usually same day — diagnose properly, and give you a fixed price before any work starts.
Boiler servicing in Great Dunmow
Annual servicing keeps your boiler safe, efficient, and your manufacturer warranty valid. Full inspection, combustion analysis, and a written report.
Heating upgrades in Great Dunmow
Cold radiators, noisy systems, sky-high bills? Power flushes, smart thermostats, radiator swaps and full system upgrades that pay for themselves.
Plumbing in Great Dunmow
Everyday plumbing done properly — taps, toilets, leaks, washing machines, showers, outside taps and isolation valves.
Other places we work close to Great Dunmow
At a glance
- Service
- New Boiler Installations
- Coverage
- Great Dunmow (CM6) 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 Great Dunmow
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 |
|---|---|
Combi-to-combi swap (like-for-like) incl. magnetic filter, system flush, 2-yr labour warranty | from £1,950 |
Conventional → combi conversion tank removal, full pipework reconfiguration | from £2,800 |
System boiler with new cylinder for 3+ bedroom / 2-bathroom homes | from £3,400 |
Free home survey & fixed quote no commission-driven upsells | £0 |
Prices include VAT. Parts quoted separately and shown on your written quote.
Other ways Great Dunmow customers find us for boiler installs
Same engineer, same fixed pricing — different question, different answer.
Villages near Great Dunmow we also cover
Stop the leak in Great Dunmow
Free written quote, no obligation. Real engineer, fixed price, fast response.