Diamond Green Energy Ltd vs The Edinburgh Boiler Company: most-reported complaints compared
Most-reported issues at Diamond Green Energy Ltd and The Edinburgh Boiler Company, according to reviewers on Trustpilot — classified by our automated reader and backed by verbatim quotes from distinct reviews. This is a side-by-side of what reviewers report, not a score, rating or recommendation for either company.
Diamond Green Energy Ltd
TrustScore 4.9 · 2,712 reviews on Trustpilot.
242 reviews analysed, 2017-07-29 to 2026-09-01.
Complaint rate (recent window): 1%
100% of negative reviews get a company reply.
“His manner was gruff at best and I was not happy to have him in my home”
The Edinburgh Boiler Company
TrustScore 4.9 · 2,834 reviews on Trustpilot.
265 reviews analysed, 2018-09-30 to 2026-09-02.
Complaint rate (recent window): 2%
83% of negative reviews get a company reply.
“Cancelled first appointment by email no phone call or voicemail was received.”
Reported on both
Issues with an evidenced category (at least two verbatim quotes) on both sides.
| Issue | Diamond Green Energy Ltd | The Edinburgh Boiler Company |
|---|---|---|
| Support unhelpful | 30% | 44% |
| Missed appointments | 22% | 20% |
| Poor core service | 22% | 24% |
| Support unreachable | 9% | 11% |
Method: reviews are classified into a fixed complaint taxonomy by an automated reader; every category shown is backed by at least two verbatim quotes from distinct reviews. Figures are census classifications, not official statistics, and reflect what reviewers reported — not findings of wrongdoing by either company. Not affiliated with, endorsed by, or sponsored by Trustpilot A/S, Diamond Green Energy Ltd or The Edinburgh Boiler Company.