Use published figures to ask better questions about the evidence. For an individual estate, review the actual buildings and reports rather than assigning the portfolio a national average.
What you need to know
- Locate the original data and collection period.
- Check how qualifying systems and compliance were defined.
- Keep missing documents separate from established findings.
- Use building-level evidence for operational decisions.
Check the origin and date of published estimates
Trace a headline percentage to its original publication, author and collection period. Check whether the underlying table and method are available. A statistic repeated across several websites is not independently corroborated if they all depend on the same unsupported statement.
Check TM44 eligibility and requirementsDistinguish sample statistics from national totals
Identify how the sample was selected: one provider’s customers, inspected premises, a register extract or a representative survey. Report the actual sample boundary. Findings from a selected group should not be relabelled as a national rate without evidence supporting that inference.
Establish the actual statutory eligibility denominator
Check which systems belonged in the population being measured, including jurisdiction, rated cooling output and relevant control. Counting every commercial address as an installation requiring inspection would produce a misleading denominator, even if the report count itself were accurate.
Avoid inferring violations from missing online results
A search may fail because of address variants, visibility or incomplete records. Distinguish “report not located” from a verified finding about inspection history. Explain those limitations before using missing search matches as the numerator in any alleged violation rate.
Verify individual inspection reports and dates
For a building review, obtain the full report and compare address, date, assessor and equipment scope with the present installation. Retain unresolved questions. The quality of that evidence matters more to the operator’s next action than a broad marketing claim about the industry.
Commission evidence-led estate reviews
Define the estate review population and record each site’s evidence state, reviewer and outstanding enquiry. Report the results for that dated set only. This article supplies no verified national compliance percentage and should not be cited as a statistical survey.
Request an accredited TM44 inspection quotationCheck the governing guidance
This article does not authenticate a government register entry or establish the status of an individual building. Confirm the applicable national framework and the actual installed equipment before relying on a compliance conclusion.
The official sources explain the inspection framework. They do not verify a national compliance rate, a TM44.uk building study or a customer savings outcome; this article describes how such claims should be evaluated.