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A New Boiler, Fitted by People Who'll Still Be Around Next Year

Worcester Bosch and Ideal accredited. Straight advice on what you actually need — not the biggest boiler we can sell you.

5.0 from over 400 Google reviews ✅ Gas Safe registered 🛠️ 18 years in plumbing & heating 🔧 Worcester Bosch & Ideal accredited

What it costs

  • Like-for-like combi swap: from £2,000
  • System-to-combi conversion: from £3,000
  • Typical range £2,000–£5,000 depending on the job
  • Deposit required on jobs over £1,000 (set out in your written quote); balance due on completion

How we help you choose

Combi vs system vs regular/heat-only, sizing for your home and hot water demand, Worcester Bosch vs Ideal trade-offs, when a straight swap makes sense vs when the pipework needs work too. We'll answer your actual questions — not push a specific brand.

Read our honest combi vs system comparison → · See real pricing breakdowns →

The process, start to finish

  1. Free home visit and quote
  2. Written proposal with clear pricing
  3. Agreed install date
  4. Typically 1 day for a like-for-like swap
  5. Gas Safe certificate and warranty registration handled for you
  6. Follow-up service reminder

Real customer story

"100% recommended. We have used the Boiler Doctor for many years now. Totally reliable and honest. As always, a super friendly guy who did a great job in good time."

— James Reel, New boiler

Read 400+ reviews →

Warranty

12 months' workmanship warranty from invoice date; manufacturer's boiler warranty runs separately (length confirmed at quote stage).

Not sure what you need yet?

A few quick questions and we'll give you a straight ballpark figure — right here, no waiting on a callback.

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Quick questions

Takes about a minute. Tell us what you're working with, and we'll give you a straight ballpark.

What type of system do you have?

What are you looking to do?

How many bedrooms in the property?

How many bathrooms or showers might run at the same time?

How old is your current boiler?

Where should we send this?

Here's your ballpark

Based on what you've told us — {{answers.systemType}}, {{answers.situation}}, {{answers.bedrooms}} bedrooms, {{answers.bathrooms}} bathroom(s):

  • A like-for-like combi swap starts from £2,000
  • A system-to-combi conversion starts from £3,000
  • Typical range for most jobs: £2,000–£5,000, depending on what's involved

That's a solid starting point — the exact number depends on the boiler and what's already in the house. We'll follow up with a proper written quote after a free home visit. No obligation, no pressure to buy bigger than you need.

Get a straight quote, no obligation.