Low pressure in Little Dunmow? Heating upgrades sorted properly
Boiler dropping pressure in Little Dunmow? 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. Heating upgrade work in Little Dunmow usually means power-flushing, smart controls, TRVs or radiator replacements — we'll tell you straight which actually move the dial for your system.
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 Little Dunmow
Not a national chain — your local engineer, your local prices.
Boiler dropping pressure in Little Dunmow? 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. Heating upgrade work in Little Dunmow usually means power-flushing, smart controls, TRVs or radiator replacements — we'll tell you straight which actually move the dial for your system.
How we handle heating upgrades in Little Dunmow
Pre-flush check
Radiator survey, pump and motorised valve check, and a sludge sample where possible.
Flush
High-flow magnetic flushing unit run through the system, radiator by radiator, until water runs clear.
Inhibitor & filter
Fresh corrosion inhibitor added; magnetic filter fitted to keep the system clean going forward.
Performance check
Heating fired up, all radiators rebalanced, and the difference measured.
What's included
Power Flushing
Deep clean of central heating to remove sludge and restore efficiency.
Learn moreRadiator Replacement & Relocation
Swapping tired old radiators or moving them for new layouts.
Learn moreSmart Thermostat Installation
Hive, Nest, Tado, Honeywell — fitted, set up and explained.
Learn moreMagnetic System Filter Fitting
MagnaClean or Spirotech filters to protect your boiler from sludge.
Learn moreWhat makes our heating upgrades work different in Little Dunmow
Three things Great Dunmow 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 heating upgrades 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.
About Little Dunmow
Sister village to Great Dunmow with a strong period and modern detached mix.
Period and modern detached.
- Listed property heating compliance
- LPG and oil servicing
- Modern combi installs
What you get when you book us
- Boiler Plus compliant installs
- Sentinel X100 inhibitor used as standard
- Rebalancing included with every flush
- BTU sizing calculations for radiator changes
- MagnaCleanse and Kamco flushing equipment
Common questions about heating upgrades in Little Dunmow
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 I really need a power flush?▾
If radiators have cold patches, your boiler is noisy, or you're fitting a new boiler to an older system, yes. Otherwise a chemical flush and magnetic filter is often enough.
Will a smart thermostat actually save money?▾
Yes — typically 8–12% off heating bills if you use the scheduling and zone features properly. Hive and Nest both pay back inside two years for most households.
What else we can help with in Little Dunmow
Boiler installs in Little Dunmow
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 repairs in Little 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 Little Dunmow
Annual servicing keeps your boiler safe, efficient, and your manufacturer warranty valid. Full inspection, combustion analysis, and a written report.
Plumbing in Little Dunmow
Everyday plumbing done properly — taps, toilets, leaks, washing machines, showers, outside taps and isolation valves.
Other places we work close to Little Dunmow
At a glance
- Service
- Heating Repairs & Upgrades
- 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 Little 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 |
|---|---|
Single radiator swap supply & fit, like-for-like | from £180 |
Smart thermostat install (Hive/Nest/tado) wired in and configured | from £220 |
Full magnetic filter & power flush extends boiler life, lower bills | from £450 |
TRV upgrade per radiator fitted while system drained | from £45 |
Prices include VAT. Parts quoted separately and shown on your written quote.
Other ways Little Dunmow customers find us for heating upgrades
Same engineer, same fixed pricing — different question, different answer.
Villages near Little Dunmow we also cover
Fix the pressure drop in Little Dunmow
Free written quote, no obligation. Real engineer, fixed price, fast response.