How we work
A disciplined method, scaled to the question.
Five stages, applied to a particular property and question. Conclusions are traced back to evidence, and uncertainty is stated rather than hidden.
01Five stages
From first conversation to clear advice.
Open any stage to see what happens, what you receive and what we need from you.
01UnderstandA confidential conversation about the property, the concern and the decision ahead.
- What happens
- A confidential conversation about the property, what has been reported, what has already been tried, and the decision the evidence needs to support.
- What you receive
- A clear statement of the question the work will answer, and whether we are the right people to answer it.
- What we need from you
- Background where available: complaint history, previous reports, maintenance and commissioning records.
02PlanA measurement approach scoped to the question, not a standard package.
- What happens
- Spaces, parameters, monitoring duration and equipment are chosen for this property and question, and fieldwork is planned around guests and service. Anything needing additional equipment, specialist partners or further technical scoping is identified here, before work is agreed.
- What you receive
- A scoped proposal that states what is and is not included.
- What we need from you
- A point of contact, access arrangements and any operational constraints.
03MeasureDiscreet on-site measurement, with sensors placed appropriately.
- What happens
- Sensors are placed appropriately for the question, and conditions and operational context are recorded so every reading can be traced to its time and place.
- What you receive
- Minimal disruption to guests and teams, and updates as agreed.
- What we need from you
- Access to agreed spaces, and notice of events or works that could affect readings.
04InterpretMeasurements checked for reliability, then interpreted in context.
- What happens
- Measurements are quality-checked and questionable or anomalous readings identified before interpretation. Findings are read against occupancy, ventilation operation, building use and relevant environmental conditions, with specialist engineering partners involved where the findings call for it.
- What you receive
- Conclusions that distinguish what the evidence demonstrates from what it suggests, with uncertainty and limitations stated.
- What we need from you
- Operational context: occupancy, plant schedules and any recent changes to the building.
05AdviseAn independent interpretation and practical next steps.
- What happens
- A written report that keeps observations, interpretations and recommendations distinct, sets out priorities and who is best placed to act, and states important limitations. Follow-up measurement is available where appropriate, but is not automatically included.
- What you receive
- An independent interpretation, practical next steps, and a discussion of the findings with your team.
- What we need from you
- The right people available to review the findings and agree next steps.
02Measurement quality
Quality-checked environmental measurements, interpreted with documented uncertainty and sensor limitations.
Environmental sensors have limitations. We work within them openly, rather than presenting every reading as certain.
What we typically measure
- Carbon dioxide (CO₂)
- An indicator of ventilation relative to occupancy. CO₂ does not measure airflow directly; where airflow needs measuring, it is arranged with specialist partners.
- Particulate matter (PM₂.₅ and PM₁₀)
- Fine and coarse particles, from outdoor air and indoor activity such as cooking or cleaning.
- Volatile organic compounds (TVOC)
- Sensor-based indicators of total VOCs. They show changes and patterns; identifying individual compounds requires appropriate specialist methods, which may include laboratory analysis.
- Temperature and relative humidity
- Thermal comfort and moisture conditions, interpreted against the use of each space.
- Other parameters
- Further measurements where suitable equipment is available and agreed during scoping.
How measurements are handled
- 01Sensor selection and appropriate placement
- 02Repeated or time-limited monitoring where a single visit would miss variation
- 03Instrument checks and measurement quality assurance
- 04Identification of questionable or anomalous readings
- 05Consideration of sensor calibration and measurement uncertainty
- 06Analysis of operating conditions, occupancy and building operation
- 07Specialist diagnostics, through partners, where the question requires them
- 08Clear separation of observations, interpretations and recommendations, with important limitations disclosed
We do not claim laboratory-grade accuracy for field measurements, or that every possible cause can be identified conclusively. Where sensor calibration or uncertainty affects a conclusion, the report says so.
03Independent assessment
Independent assessment. Evidence you can stand behind.
Sensors and in-house data collection can show readings. An independent third-party assessment adds what data alone does not: a defined method, quality-checked measurements, external interpretation, comparisons with appropriate guidance and clear reporting for the people who decide.
- Quality assurance of measurements
- Checking that the data is fit to interpret: suitable instruments and placement, instrument checks, questionable readings identified and uncertainty stated.
- Verification against agreed criteria
- Comparing quality-checked results with criteria agreed at scoping, such as reference guidance or the conditions before a change, with the confidence of each conclusion stated.
- Formal certification
- Not provided. Our assessments are not statutory certification or UKAS-accredited testing. Where formal certification is needed, we say so at scoping.
A standardised framework, adapted to each property
- Agreed parameters, units and reference criteria
- Defined measurement and sampling protocols
- Appropriate sensor selection and instrument checks
- Documented operating conditions and measurement limitations
- A common report structure and evidence-confidence classifications
- Consistent interpretation using CIBSE, ASHRAE, WELL and other applicable guidance
Consistent does not mean identical. Sensor placement, monitoring duration and the reference criteria that apply are adapted to each property’s design, use and operating conditions, and recorded, so that reports remain comparable where comparison is meaningful.
Assessing several properties04From measurement to recommendation
What the evidence demonstrates, and what it merely suggests.
Reports keep three things apart: what was observed, what it is interpreted to mean, and what we recommend. Each interpretation carries a stated level of confidence.
F-01 · 01
Observation
What was measured
CO₂ rose through the occupied night to about three times its early-evening level and stayed well above comparison room B until 09:00, by more than the assumed measurement uncertainty.
F-01 · 02
Interpretation
What it suggests · Indicated
Indicates that outdoor-air provision may have been insufficient relative to occupancy. CO₂ alone does not measure airflow, and other contributors, such as higher occupancy, cannot be excluded.
Limitation: Occupancy and window use were not recorded during the period.
F-01 · 03
Recommendation
What to do next
Verify supply airflow at the room terminal against design intent, and gather operational context, before remedial work is specified.
How confidence is described
- Demonstrated
- The quality-checked measurements directly show it, within the stated uncertainty.
- Indicated
- The measurements are consistent with it, but other explanations remain possible.
- Not established
- The available evidence is not sufficient to say either way. We say so, and what would be needed.
Standards-informed interpretation
Measurements are interpreted with reference to applicable guidance and benchmarks, which may include CIBSE, ASHRAE, WELL and other relevant environmental standards and guidance, selected according to the property, the parameter and the purpose of the assessment.
- Measured results
- What the quality-checked instruments recorded, with uncertainty stated.
- Reference guidance
- The benchmarks the results are compared with, named in the report with the reason for choosing them.
- Interpretation
- What the comparison means for the property, with a stated level of confidence.
- Compliance and certification
- Not provided. Illuminair is not a certification body, accredited testing laboratory or statutory compliance assessor; where formal certification is needed, we say so.
From environmental evidence to practical solutions
Understanding an environmental problem is the starting point. Where our findings indicate that intervention may be appropriate, Illuminair can help evaluate suitable technologies, compare options and support the development of a practical solution. Sometimes the right answer is an operational change, maintenance, further investigation or no capital expenditure, and we say so. Solution advice is agreed separately from an assessment, so the findings stand on their own.
05Reporting
Evidence you can act on, and defend.
The report is what remains after we leave. According to the agreed scope, it can include:
- An executive summary for owners and senior management
- Quality-checked measurements and trends
- Space-by-space analysis
- Observations and evidence-based interpretations
- Confidence levels and limitations
- Prioritised recommendations
- A baseline for future comparison or verification
Written for decision-makers
A plain-English summary a General Manager or owner can read in five minutes.
Traceable for engineers
Every reading tied to a location, a time and a method, so it can be checked and challenged.
Clear about confidence
Observations, interpretations and recommendations kept separate, with uncertainty and limitations stated.
Environmental Performance Assessment
Fictional example B, a different property from the homepage example
- Spaces measured
- 12
- Monitoring period
- 7 days
- Parameters
- 5
Executive summary
Overnight CO₂ patterns indicate that outdoor-air provision in one room may have been insufficient relative to occupancy. Airflow verification and further operational context are recommended before remedial work is specified.
High priority
1
Medium priority
1
Low priority
1
A pressure reversal in the fourth-floor corridor offers a plausible, unconfirmed route for the reported odour. If adjustments are made, repeat measurement under comparable occupancy can help evaluate whether conditions improved.
Who reads which part
General Managers
“Why do the same rooms keep generating complaints, and what would actually make a difference?”
- A plain-English account of what is happening and why
- Priorities you can act on and explain to ownership
- Independent evidence to inform discussions between teams and contractors
Directors of Engineering
“I need data I can trust before I commit budget or another contractor visit.”
- Quality-checked measurements, with uncertainty and sensor limitations documented
- Interpretation of ventilation and filtration performance
- Specialist engineering input through qualified partners
Owners & Asset Managers
“Before we approve this capital request, is it actually the right fix?”
- Independent evidence ahead of capital decisions
- A documented record of how the asset performs
- Independent assessment, with any monitoring technology selected to suit the property
06Independence
How the work is held to account.
Independent assessment
Our role is to assess and explain. Where monitoring technology is needed, we help select what suits the property rather than assuming one solution fits every building.
Traceable evidence
Every reading is tied to a location, a time and a method, so it can be checked and challenged.
Plain statements of uncertainty
We say what the data demonstrates, what it merely suggests, and when a question needs further work or specialist input.
Discretion
Fieldwork is planned around guests and service. Findings are shared only with the people you expressly authorise, unless the law requires otherwise.
07Next step
Tell us what you need to understand.
The first stage is a confidential conversation. It is usually enough to tell whether, and how, we can help.
Confidential, with no obligation.