About boiler-installation.com
Why this exists
Anyone replacing a boiler ends up holding a quote and wondering whether it meets the rules that govern the job. Those rules sit inside the Approved Documents made under the Building Regulations 2010, published on GOV.UK, but the page that answers a specific question, such as which edition of Approved Document L applies or how far a flue has to sit from an opening, is not always the one a search turns up first. Often it is a boiler manufacturer's page instead, written to sell a product. boiler-installation.com was built to sit in that gap.
What it covers
Each page states the rule as it is written in the Approved Document that sets it, Approved Document L for efficiency and Approved Document J for flues, alongside the document name, the edition and the paragraph number. You can hold that against the quote in front of you and check it at the source yourself. Where the document leaves a decision to the installer's judgement rather than setting a fixed rule, the site says so, because that is part of the answer too.
Who it's for
This site is written for a householder or landlord in England who has an installer's quote and wants to know what it should contain. Installers use it the same way, for the paragraph.
boiler-installation.com explains what the rules ask of a replacement gas or oil boiler and what a quote and the paperwork should cover. It does not install boilers, quote for work, or recommend installers.
Document, edition, paragraph
Every rule here names the document, the edition and the paragraph it comes from, so you can check it against Approved Document L or Approved Document J yourself.
Filling a gap
The Approved Documents sit on GOV.UK, but the page many searches turn up first is often written by a boiler manufacturer.
Who it's for
Written for a householder or landlord in England holding an installer's quote, and for the installer writing it.
The standard behind every citation
Every rule on this site names the document it comes from, the edition year, and the paragraph number, right alongside the requirement itself. That's fixed on purpose. If you're holding a quote, you should be able to go straight to the source paragraph and check it for yourself.
Where the document leaves the decision to someone else
Not every question has a paragraph that settles it outright. Sometimes an Approved Document leaves a call to the installer's judgement, to a competent-person scheme, or to the building control body. Where that's the case, it's stated plainly. Whether a particular installation meets the requirement is still a question for the installer, the scheme, or building control to answer. A citation can point you to the paragraph, but it can't make that judgement for you.
Found a mistake?
A citation can still be wrong. A paragraph number can be mistyped, an edition can be misattributed, a quoted figure can be out of date. If you spot one, write to boiler-installation with the page it's on, the paragraph you're querying, and what you think it should say instead.
Where a correction leads to a change, it's recorded with a date, so you can see when a page was last updated.