For installers
For installers

How installers make our lists

What the number, the tick, Pro and Top mean on a Energy Installers list, how solar, heat pump, heating, plumbing and electrical firms are placed, who is left out, and the official sources behind the guides.

Updated

What you are looking at on a Energy Installers list

The number beside a name
Its place in that town's list, for example third among the solar panel installers in Sheffield. The order is editorial and we explain how it is reached further down.
The blue tick
The owner of the business has proved to us that the listing is theirs, usually through a company email address or an address printed on the company's own website. It says nothing about Gas Safe, MCS or electrical registration, which you must check yourself.
Pro
A fuller listing the owner pays for: more photos, a price list, services and contact buttons. It never moves a business up the list.
Top
A reserved slot among the first three places, which a business already on that list can buy. It is always labelled, and everyone below keeps the editorial order.
Updated
Shown under the title of a list or guide: the day its contents were last changed or checked again.

Why heating and power is awkward to rank

A plumber fits boilers, a heating engineer services them, an electrician wires in the EV charger that the solar firm also offers, and many firms advertise all of it. Lists of "the best" mix these trades together until nobody can tell who actually does what.

So each list on this site answers one narrow question: who fits solar panels, who fits heat pumps, who works on boilers and heating, who does emergency plumbing, who does electrical safety reports, who installs chargers or air conditioning in this town. A business sits only in the lists its own work supports.

What decides a place in a list

  • What the firm really does. A company whose own pages show dozens of heat pump jobs ranks above an electrician who lists heat pumps as one of thirty services.
  • What the public can verify about it. Reviews that a stranger could read for themselves, how many of them, and how they have held up.
  • What it says on its own site and channels. The towns it covers, the work it describes, the accreditations it claims and prices it publishes.

Those three weigh up into one editorial order. Paying never decides it.

Businesses we never put in a list

  • Energy suppliers and public charge points. They sell power, not installation.
  • Trade counters, wholesalers and manufacturers that only supply the trade.
  • Websites that collect your details and sell them on as a quote.
  • Any business that has stopped trading or whose work is not what the list is about.

Large national companies can appear next to local ones. They are judged by the same three questions, not by their size.

Registration is yours to check

We do not hold the Gas Safe, MCS or electrical scheme registers for every firm on the site, and a place in a list is not a certificate. Before any work starts, use the registration checker to see which register your job needs and where to confirm it.

Correcting a mistake

Spotted a firm that has shut, dropped a service or landed in the wrong trade? Use the contact page, tell us the page and what is off. We re-read the source before changing anything, and if an owner has verified the listing, the owner's own edits are shown as theirs.

Official sources behind the guides on this site

Checked on 13 November 2026. Where an official site refuses automated visits, we say so on the page that uses it.