What green building assessors actually ask about air quality equipment

Key takeaways

• Certification credit for air quality equipment is not automatic; confirm with your assessor first
• Assessors typically ask about filtration technology, certifications and how coverage was sized
• Gather certification documents, sizing records and servicing details before the conversation
• Keep language precise: distinguish confirmed outcomes from those still under assessor review
• Follow up promptly on anything outstanding to keep a submission moving

Why it's worth checking with your assessor before assuming credit applies

Green Mark and similar green building certification schemes reward a wide range of building features, and air quality equipment sometimes fits into that picture. It is tempting for a developer or facilities team to assume that installing medical-grade air purifiers across a building automatically counts toward a specific credit line.

That assumption can backfire. Certification schemes are assessed project by project, and how a given piece of equipment is scored depends on the exact criteria in force for that submission, the building type, and how the assessor interprets the supporting evidence. Marketing material from any supplier, including ours, is not a substitute for that assessment.

The safer approach is to treat air quality equipment as a genuine operational decision first, and a possible certification contributor second. Raise it with your assessor early, before you have committed to language in sales collateral or tenant communications that assumes a credit has already been secured.

Questions an assessor might realistically ask about air quality equipment

An assessor reviewing air quality equipment as part of a green building submission will usually want to understand what the equipment actually does, not just what it is called. Expect questions about the filtration technology in use, whether it is passive filtration alone or includes active sterilisation stages, and how coverage area was determined for each installed unit.

They may also ask for the underlying certifications, such as the H13 HEPA filtration standard or relevant device listings, rather than accepting a general "medical-grade" description at face value. Servicing and maintenance plans sometimes come up too, since ongoing upkeep affects whether equipment keeps performing as installed.

Be ready to explain how units were sized to the spaces they serve, using a straightforward calculation such as clean air delivery rate matched to floor area and ceiling height. An assessor who sees a considered sizing approach, rather than a blanket unit count, tends to ask fewer follow-up questions.

What documentation to have ready for that conversation

Before the conversation, gather the certification documents for the specific equipment installed, not generic brand literature. This typically includes device listing details, filtration standard certificates, and any relevant manufacturing certifications such as ISO 9001 or ISO 14001, which relate to how the equipment is produced and quality-managed rather than to the building itself.

Add your sizing records showing how many units were installed in which spaces and the reasoning behind the coverage, plus any servicing schedule agreed with your supplier. If the equipment forms part of a rental arrangement rather than an outright purchase, have those terms on hand too, since an assessor may ask who is responsible for ongoing upkeep.

Keep everything in one folder, physical or digital, so you are not searching through separate supplier emails and invoices during the meeting itself.

Being precise about what's confirmed versus what's still pending

During and after the assessor conversation, keep a clear line between what has been confirmed and what is still under review. It is easy, especially under pressure from a supplier or internal stakeholders, to describe a credit as secured before an assessor has formally signed off on it.

Use language internally and externally that reflects this distinction. "Submitted for assessor review" and "confirmed by our assessor" describe two different states, and mixing them up in a marketing brochure or a resident communication can create a claim your project cannot actually back up if the final assessment differs from the initial conversation.

This matters most in materials that reach buyers or tenants, since an overstated claim there is harder to quietly correct than an internal planning document.

Following up after the initial assessment conversation

A single conversation with an assessor rarely settles everything, particularly on a large or phased development. Note down what the assessor asked for, what you were able to provide on the spot, and what still needs to be sourced, whether that is an updated certificate or a servicing record from your supplier.

Follow up promptly with anything outstanding rather than waiting for the assessor to chase it, since a responsive submission tends to move faster through review. If your project involves multiple phases or buildings, apply what you learned from the first conversation to how you prepare documentation for the next one.

For general guidance on how we describe our own equipment's certifications and performance, see our claims verification page, which sets out what we will and will not state without evidence behind it.

Next step

Documentation and precise language matter well beyond a single assessor meeting. Our claims verification page sets out the standard we hold our own certifications and performance claims to, a reasonable benchmark for any air quality material prepared for a green building submission.

Frequently asked

Should a developer check with their assessor before assuming certification credit applies?

Yes. Assessment criteria vary by project and scheme version, so a developer should confirm with their assessor before assuming air quality equipment earns a specific credit. Treating it as confirmed too early risks language in sales or tenant materials that the final assessment cannot support.

What questions might an assessor realistically ask?

An assessor will typically ask what the equipment actually does, including its filtration technology, certifications and how coverage was calculated for each space. They may also ask about servicing plans, since ongoing maintenance affects whether the equipment keeps performing as installed.

What documentation should be ready for that conversation?

Gather the specific certification documents for the equipment installed, sizing records showing unit placement and coverage reasoning, and any servicing schedule or rental terms. Keeping this in one folder makes the conversation faster than searching through separate supplier emails.

Related reading

• How We Verify Our Claims
• Best Medical-Grade Air Purifiers in Singapore (2026)
• Commercial Air Purifier Rental in Singapore