About this site / Reviewed against primary sources June 2026

About BoilerReplacementCost.com

Why this site exists

UK boiler replacement information online is dominated by installer-affiliate content sites (Heatable, BoilerCentral, MyJobQuote, Checkatrade, BOXT) whose commercial interest is to funnel readers to a quote form. Their content structure follows that interest: a single long-form "here is how much a boiler costs" article with a quote CTA. The user is not given the prior decision: do I actually need a new boiler, and if so along which of four different paths?

This site takes a different shape. It assumes the reader is at the start of the decision, not the end. We map the four options (repair, like-for-like swap, conversion, heat-pump alternative) with calibrated UK 2026 cost ranges at each branch, then go deep on the most-likely scenarios for UK homes. There is no quote form, no booking commission, no affiliate funnel. The site is the editorial guide; the user's next step is finding a Gas Safe registered engineer independently via gassaferegister.co.uk.

Who builds this

BoilerReplacementCost.com is built and maintained by Oliver Wakefield-Smith at Digital Signet, an independent UK research and cost-reference editorial group covering home services, professional services, and consumer purchases. The site sits alongside a portfolio of sister sites focused on adjacent UK home heating + maintenance decisions:

Editorial position

Independent, not a reseller, not a consultancy lead-gen funnel. Not affiliated with any boiler manufacturer or installer: Worcester Bosch, Vaillant, Ideal, Baxi, Viessmann, Glow-worm, Alpha, Potterton, Ferroli, Heatable, BOXT, Checkatrade, BoilerCentral, BoilerGuide, MyJobQuote, MyBuilder, British Gas, HomeServe, Hometree, EDF, E.ON Next, Octopus, OVO, Scottish Power, EDF. Brand names appear on this site for editorial specificity, comparison, and consumer-clarity reasons only. The site carries no affiliate links or paid placements today and has no quote forms; anything commercial added later would be labelled and would not change the figures.

What this site covers

Editorial principles

Named sources for named figures

Brand and model prices come from BOXT's published fixed installed prices, with the date checked. Savings and the average replacement cost come from the Energy Saving Trust. Grant terms come from gov.uk and Ofgem. See /methodology for the source ledger.

Say what is not published

Manufacturers do not publish consumer prices, so we do not print one. Where no source exists, the page says so. Warranty terms come from each manufacturer's own UK warranty pages.

No paid placement

No installer has paid for placement, recommendation, or favourable framing.

Dated checks

Each published price carries the date it was checked. The site-wide review date moves only when pages are actually re-checked against their sources.

Boiler Plus + regs compliance

All installation content references the actual UK regulatory framework (Gas Safety (Installation and Use) Regulations 1998, Building Regulations Part L + Part J, Boiler Plus 2018).

Quotes decide

The wider cost bands on type, size and region pages are editorial ranges, not a published survey. Specific quotes vary; always get 2-3 quotes from Gas Safe registered engineers for the same model and output.

Methodology in brief

Named installed prices are BOXT's published fixed "from" prices, with the date checked. The Energy Saving Trust supplies the average replacement cost (£3,500 in Great Britain) and annual savings by boiler band and home type. Warranty terms come from each manufacturer's UK warranty pages, and grant data from gov.uk and Ofgem. The wider type, size and region bands are editorial ranges, not a published survey. See methodology for the full source ledger and refresh cadence.

Contact and corrections

Spot a factual error or a price that has drifted? Email [email protected] with the page URL and the specific correction. We aim to acknowledge corrections within 5 business days and update inline within the next refresh cycle.

Do not email for boiler emergencies. If you smell gas, call the National Gas Emergency Service on 0800 111 999 immediately. For non-emergency boiler installation or service questions, find a Gas Safe registered engineer via gassaferegister.co.uk.

Disclosures

  • No paid placements, no booking commission, no quote-form revenue, no affiliate links on this site at the time of writing.
  • Digital Signet (the publisher) operates other home-services cost reference sites which may, in future, carry affiliate links for installer-comparison services. Any future affiliate relationships will be disclosed inline at the page level.
  • Boiler brand and installer names appear for editorial specificity only; brand inclusion or exclusion is not a recommendation.
  • All cost data and grant detail is editorial only and not financial, legal, or engineering advice. Always consult a Gas Safe registered engineer for specific installation decisions.

Got a question? Start at the homepage decision-tree hero, or jump straight to cost by type. For methodology see methodology and sources.

Updated 2026-05-12