This page is for homeowners who want to know why official provider lists matter. It explains the benefits and answers common questions. It complements our qualified provider list guide, which shows how to use each register.
For the broader overview, read our guide: Any Qualified Provider List for UK Homeowners.
Independent guide. We are not a lender or a government body. Always check current scheme rules with the official provider.
Benefits of using a qualified provider list
Official lists help you find installers who meet set standards. They also link you to consumer protection. Using them reduces the risk of scams and unfunded work.
- Access to funding. The Boiler Upgrade Scheme and Home Energy Scotland need MCS-certified installers.
- Consumer protection. RECC and HIES give deposit protection, a two-year workmanship warranty and a seven-day cooling-off period.
- Dispute help. HIES offers free dispute resolution.
- Quality standards. TrustMark is the government-endorsed quality scheme for home improvements.
Which list to use for what
Each list answers a different question. Use them together for a full picture. The FCA register covers lenders, not installers.
| Register | What it confirms |
|---|---|
| MCS | Installer and product certification |
| TrustMark | Registration with the government-endorsed quality scheme |
| RECC or HIES | Consumer code membership and protections |
| FCA register | That a lender is authorised |
Limits of any list
A list confirms status, not the quality of one particular job. Still compare written quotes and ask questions. Check status close to the date you sign. Keep records of every check.
Frequently asked questions
Why should I use an official installer list?
It links you to certified installers and to consumer protection. Many funding schemes need an MCS-certified installer.
Does being on a list guarantee good work?
No. A list confirms certification and membership. Still compare quotes and check warranties.
Which list should I check first?
Start with MCS, then TrustMark and the consumer code.
Is there a list for lenders?
Yes. Check any lender on the FCA register.
Do you keep your own installer list?
No. We are independent and point you to official registers.
So you can use official lists to find protected, fundable installers.
WHLS Editorial Team
Our editorial team writes independent, plain-English guides on home energy finance. We review guides when scheme rules change.
References
- MCS – Find an installer (opens in a new tab)
- TrustMark (opens in a new tab)
- RECC – Renewable Energy Consumer Code (opens in a new tab)
- HIES – Home Insulation and Energy Systems (opens in a new tab)
- Energy Saving Trust – Consumer protection (opens in a new tab)
- Financial Conduct Authority – Financial Services Register (opens in a new tab)
