How we choose who to recommend
Our calculators end with a next step: book an assessment, find an installer, or buy the materials for a job you can do yourself. This page explains who we send you to, why, and which of those links earn us money.
The short version
- We only point you to suppliers that meet the standard below, or to the official register where you can choose for yourself.
- Some links are paid. Each one says so just before the link, and is marked as sponsored in the page code.
- A commission never changes a figure. The calculators still tell you when an upgrade does not pay for itself.
- No personal data passes from us to any supplier through these links.
The standard every supplier has to meet
- The right certification for the job. MCS for heat pumps and solar, TrustMark for grant funded insulation, an accredited assessor for EPCs. If a grant depends on a certification, we never recommend anyone without it.
- Prices you can check. We prefer suppliers that publish their prices, so a guide can show a dated price beside the link and you can compare it with our figures.
- A UK business you can reach. A UK address and a way to complain, and for installers, membership of the scheme that handles disputes.
- No worse than the free route. Where an official register exists, we link it too, so a paid link is never the only way forward.
If a supplier stops meeting this standard, or readers tell us about problems we can confirm, we remove the link.
Who we recommend today
| For | We send you to | Link | Why |
|---|---|---|---|
| Booking an EPC | Energy Performance Certificates | Paid link | Accredited assessors who lodge the certificate on the government register. We also link the register itself, so you can pick any assessor. |
| Heat pump installers | The MCS installer register | Free | Only an MCS certified installer can claim the Boiler Upgrade Scheme grant for you. |
| Solar installers | The MCS installer register | Free | MCS certification is what makes you eligible for Smart Export Guarantee payments. |
| Insulation installers | The TrustMark register | Free | TrustMark registration is required for most grant funded insulation work. |
| Loft insulation rolls | Materials Market | Paid link | Lists its prices openly, so the guide can show a dated price check beside the link. |
| Dehumidifiers | Meaco | Paid link | Publishes the power use we need to work out the running cost on the page. |
Updated 9 November 2026. Quote requests to installers are paused while we set up installer partners; this page will name any partner before a request can go to them.
How paid links work
We are a member of the Awin affiliate network. When you follow a paid link and go on to order, the supplier pays us a commission. It costs you nothing extra. Awin and the supplier record the click on their own sites, under their own privacy policies, and we never see who you are or what you bought. More on this in our privacy policy.
Paid links never decide what a calculator says or which option a guide favours. The figures come from the published sources listed on our data page, and the method behind them is on our methodology page.
What we will not do
- Rank suppliers as the "best" without real, published figures to compare them on.
- Accept payment to change a figure, a verdict or the order of a list.
- Sell or share your details. The only email addresses we hold are for the update emails you sign up for.
Tell us about a supplier
If you have had a problem with anyone we link to, or think we should recommend someone, email hello@retrofitplanner.co.uk. You can read more about us on the about page.