Certified Group Ltd
Often reviewed for: Boiler & heating
Known for: Friendly & polite · Professional
1 credential shown
Public evidence profile
CJM Energy Services
Emergency callout
Central Heating Repair, Plumber
Based on rating, review volume, independent sources and credential evidence. Evidence context, not a guarantee of workmanship.
Trust at a glance
1 checkWhat we can verify about CJM Energy Services
Each card sums up one thing we can check from public sources. Open it for the full detail and the named source. This is evidence context, not a guarantee.
See the full verification checklist for CJM Energy Services →From Checkatrade
Emergency callout
Lists emergency callout on Checkatrade for these jobs:
- Central Heating Repair
- Plumber
This is how they list themselves on Checkatrade. Call ahead to confirm they can come out for your job right now before you rely on it.
Reviews · public evidence
What customers say
These review totals are published independently on the named public source below, not testimonials this business chose to show. We show the aggregate rating, review volume, and source attribution we hold so you can weigh the evidence yourself.
5.0out of 5
Where these reviews are published
- Checkatrade78 reviews · 5.0 avg
Local context
Rated 5.0, above the local average for plumbers in Greenwich
Across 24 plumbers in Greenwich, the typical rating is 4.9 out of 5. We compare against the same businesses a homeowner would find searching for this trade locally.
Sources
1 named public sourceWhere this information comes from
Everything on this page is drawn from named public sources. Where a source provides a public link, you can open the original and dig deeper.
Review sources
Check dates vary by source. Where we hold a date, the check shows it.
About
Central heating in London, London.
Services they list
Air Source Heat Pump Installation - ASHPBathroom & Kitchen PlumbingBlocked BathsBlocked SinksBlocked ToiletsGas Boiler InstallationGas Boiler Servicing / RepairGas Central Heating InstallationGas Central Heating Servicing / RepairGas Cooker InstallationGas Safety Checks - CP12General Plumbing
Listed on public sources or the business's own website; check directly that they cover your job before you book.
Areas served
London
The areas they list covering on a public directory; confirm they cover your address before you book.
Your own checks
What to check before you hire
Worth checking yourself
Always confirm credentials and quotes with the business directly before hiring.
Verify at the sourceCheck them yourself
Approved plumbers on the free WaterSafe register are vetted, qualified to the water regulations and insured. Check they're listed, or find a WaterSafe-approved plumber near you.
Check the WaterSafe registerAgree the call-out fee, the hourly or fixed rate, and whether parts are charged on top, in writing, before an emergency plumber starts. Out-of-hours overcharging and 'while I'm here' add-ons are common complaints.
Be wary of a plumber who, on a first visit, says your whole system or boiler must be replaced. Get a second opinion and an itemised quote (parts and labour separately) before agreeing to major work.
Gas and boiler work is a separate, regulated trade, not general plumbing. Make sure anyone working on a gas appliance is specifically registered to do gas work, and ask to see that registration before they start.
Want an extra legitimacy check? Run the Cowboy Checker on CJM Energy Services before you contact them.
Run Cowboy Checker →Good to know
Common questions about CJM Energy Services
Is CJM Energy Services a legitimate business?
CJM Energy Services has 78 independent public reviews, rated 5 out of 5. This is independent public evidence gathered from named public sources (no ads, no paid placement), not a guarantee of workmanship. If anything here is out of date, the business can request a correction.
What do customers say about CJM Energy Services?
CJM Energy Services has 78 public reviews, averaging 5 out of 5. The reviews section shows the aggregate rating, review volume, and review source information we hold.
How do I know CJM Energy Services' reviews are genuine?
CJM Energy Services' 78 public reviews come from a named public review source. MyTrustedTraders brings this public evidence together with no ads and no paid placement: we show the review source information and aggregate rating we hold rather than selling rankings, so you can weigh the evidence for yourself.
What does CJM Energy Services specialise in?
CJM Energy Services lists specialist services including Air Source Heat Pump Installation - ASHP, Bathroom & Kitchen Plumbing, Blocked Baths, Blocked Sinks, Blocked Toilets, Gas Boiler Installation. If your job is one of these, look for it in their listed services or ask them to confirm for your project.
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- Customers mention: arrived within hours (checkatrade, which_trusted)
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Emergency callout
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Emergency callout