Boiler installs cost in Theydon Bois
Real, honest pricing for boiler installs in Theydon Bois — no "prices from" marketing, no surprise extras. Most jobs we can scope over the phone with a couple of photos, with a fixed written quote in your inbox the same day. For full installs in Theydon Bois 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 Theydon Bois
Not a national chain — your local engineer, your local prices.
Real, honest pricing for boiler installs in Theydon Bois — no "prices from" marketing, no surprise extras. Most jobs we can scope over the phone with a couple of photos, with a fixed written quote in your inbox the same day. For full installs in Theydon Bois we'll size the boiler against your real demand, not just like-for-like swap whatever's on the wall.
Why choose us for boiler installs in Theydon Bois
When you book us for boiler installations in Theydon Bois, you get a real, named engineer turning up — not a sub-contractor.
We know the housing in Theydon Bois and what tends to go wrong with it, which means fewer surprises mid-job.
Fixed prices in writing before any work starts. The number you agree is the number you pay.
How we handle boiler installs in Theydon Bois
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.
About Theydon Bois
Period village stock with modern detached infill.
- Forest-edge conservation considerations
- Older system replacements
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 moreWhat you get when you book us
- Worcester Bosch Accredited Installer
- Vaillant Advance approved
- 5-star reviews on Google & Checkatrade
- Fixed written quotes — no surprise extras
- Magnetic filter fitted as standard
Quick answers on boiler installs in Theydon Bois
What's a fair price for this job in Theydon Bois?▾
Pricing depends on the boiler, the existing pipework, and any system upgrades needed. We're typically 10-20% under the big national chains because we don't carry their overheads — and the workmanship is better.
Are quotes free?▾
Yes — quotes are always free, in writing, and there's no obligation. We don't do high-pressure sales.
Do you take the old boiler away?▾
Yes — old boiler, packaging and any redundant parts are removed and disposed of properly at no extra cost.
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.
Related services in Theydon Bois
Boiler repairs in Theydon Bois
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 Theydon Bois
Annual servicing keeps your boiler safe, efficient, and your manufacturer warranty valid. Full inspection, combustion analysis, and a written report.
Heating upgrades in Theydon Bois
Cold radiators, noisy systems, sky-high bills? Power flushes, smart thermostats, radiator swaps and full system upgrades that pay for themselves.
Plumbing in Theydon Bois
Everyday plumbing done properly — taps, toilets, leaks, washing machines, showers, outside taps and isolation valves.
Areas near Theydon Bois we also cover
At a glance
- Service
- New Boiler Installations
- Coverage
- Theydon Bois (CM16) 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 Theydon Bois
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 Theydon Bois customers find us for boiler installs
Same engineer, same fixed pricing — different question, different answer.
Get a real price for boiler installs in Theydon Bois
Free written quote, no obligation. Real engineer, fixed price, fast response.