Glow-worm boiler installs in Harlow
Glow-worm boilers fitted, serviced and repaired across Harlow. Glow-worm is part of the Vaillant group — strong shared parts availability and a solid budget option for landlord and rental installs. For full installs in Harlow 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 Harlow
Not a national chain — your local engineer, your local prices.
Glow-worm boilers fitted, serviced and repaired across Harlow. Glow-worm is part of the Vaillant group — strong shared parts availability and a solid budget option for landlord and rental installs. For full installs in Harlow we'll size the boiler against your real demand, not just like-for-like swap whatever's on the wall.
Why we're a sensible choice for boiler installs 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.
We do a steady stream of back-boiler removals across the original new town housing — the 1960s installations are now well past replacement age.
Everything we do is Gas Safe registered, fully insured, and backed by a 12-month workmanship guarantee.
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 moreAbout 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
- Worcester Bosch Accredited Installer
- Up to 12-year manufacturer warranties
- Boiler registered for warranty on the day
- Gas Safe registered (reg. number on every quote)
- Fixed written quotes — no surprise extras
How we handle boiler installs in Harlow
Talk through what you actually need
Sometimes a £2,200 combi is the right answer. Sometimes a system boiler with a cylinder is. We'll tell you straight.
Lock in the price
Fixed-price quote in writing. The number you agree is the number you pay.
Fit it properly
Magnetic system filter, full power-flush where needed, neat pipework. The bits other installers cut corners on.
Register the warranty
Up to 12 years with Worcester or Vaillant — we register it for you on the day.
Quick answers on boiler installs in Harlow
Are Glow-worm and Vaillant the same?▾
Same parent group, often shared componentry, but Glow-worm sits at a lower price point with shorter warranties. Good value for rental properties.
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.
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.
What else we can help with in Harlow
Boiler repairs in Harlow
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 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
- New Boiler Installations
- 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 |
|---|---|
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 Harlow customers find us for boiler installs
Same engineer, same fixed pricing — different question, different answer.
Villages near Harlow we also cover
Glow-worm cover for Harlow
Free written quote, no obligation. Real engineer, fixed price, fast response.