What a home survey actually checks room by room
A home survey covers more than just square footage. See what gets checked room by room and what you'll walk away with after the visit.
Key takeaways
- Square footage alone doesn't determine the right unit, ceiling height and usage matter too
- Each room gets checked individually for aircon type, ventilation and specific concerns
- The visit results in room-by-room figures rather than one blanket recommendation for the home
- Booking around your household's routine keeps the visit efficient for everyone
Why a home survey covers more than just square footage
It is tempting to think sizing a home air purifier is just a matter of floor area, plug the square metres into a formula and buy accordingly. Floor area is one input, but it is not the whole picture. Ceiling height changes the actual air volume of a room, and a taller-than-average ceiling needs more coverage for the same footprint.
How a room is actually used matters too. A bedroom with the door closed for eight hours overnight has a different air situation from an open-plan living and dining area that sees traffic all day. A kitchen with daily frying has different needs from a rarely used guest room of the same size.
A proper survey accounts for all of this, which is why it goes beyond a quick floor-area calculation and involves someone actually walking through the home. Two rooms with identical floor plans on paper can end up needing different coverage once actual usage and airflow are factored in.
What gets checked in each room during the visit
Room by room, a survey typically notes the floor area and ceiling height, whether the aircon in that room recirculates indoor air only or has some fresh air intake, and any specific concerns the household flags, a musty smell, visible dust near windows, lingering cooking odour, a pet that sheds.
Windows and their usual state, kept open or closed, factor in too, since a room that is aired out regularly behaves differently from one that stays sealed. If the household includes a baby, an elderly parent, or someone with allergic rhinitis or asthma, that context shapes which rooms should be prioritised first.
Furniture layout gets a quick look as well, since a wardrobe or bookshelf positioned near where a unit would sit can restrict airflow and reduce how effectively it draws air from the rest of the room.
None of this is guesswork. It is a structured walkthrough designed to produce figures you can actually act on, rather than a single estimate for the whole home.
How aircon and ventilation setup factor into the assessment
Singapore homes vary considerably in how their aircon handles air. Many split-unit systems only recirculate what is already in the room, with no fresh air intake at all, which means a closed room's air quality depends almost entirely on filtration to change over time.
Other homes, particularly some newer condo developments, include mechanical ventilation that introduces some outdoor air. That changes how much a purifier needs to do on its own, since the room is already getting some natural air exchange.
A survey notes which situation applies to each room, since it affects the recommended air changes per hour and, in turn, the coverage a unit needs to keep up with that target.
What you'll walk away with after the survey
At the end of a home survey, you should have a room-by-room set of figures: floor area, recommended coverage, and which AIRE model matches each space, whether that is a compact unit for a small bedroom or a larger one for an open-plan living area.
This gives you a basis for deciding what to act on immediately and what to hold for later, particularly useful if budget is staged across the household rather than spent on every room at once. It also removes the guesswork of buying a unit sized for the wrong room.
You are not obligated to act on every recommendation at once. The figures are yours to use on your own timeline, whether that means buying, renting, or simply having accurate numbers on hand for later.
Booking a time that works around your household
A home visit takes some coordination, particularly in a household with a baby's nap schedule, work-from-home calls, or elderly family members who prefer a predictable routine. It helps to flag any timing constraints when booking, rather than working around them on the day.
Most homes can be surveyed in one sitting, moving room by room in a logical order rather than requiring separate visits. If certain rooms are harder to access at particular times, mentioning that in advance means the visit can adapt rather than leaving gaps.
AIRE's free room-by-room Air Report is designed around this: a single coordinated visit with zero upfront cost, structured to fit your household's actual routine rather than a fixed script.
Next step
Book a free room-by-room Air Report to get accurate, room-specific figures for your own home, with zero upfront cost.
Frequently asked
Does a home survey cover more than just square footage?
Yes. Floor area is one input, but ceiling height, how each room is actually used, and the aircon or ventilation setup in that specific room all factor into an accurate recommendation. A survey accounts for all of this rather than relying on a single floor-area calculation.
What gets checked in each room during the visit?
Each room is checked for floor area, ceiling height, aircon type, and any specific concerns like odour, dust or pet dander. If the household includes a baby, elderly parent or someone with allergies, that context is used to help prioritise which rooms matter most.
What do you receive after the survey is complete?
You receive room-by-room figures covering recommended coverage and which AIRE model matches each space, rather than one blanket number for the whole home. These figures are yours to act on immediately or hold for later, on whatever timeline suits your household.
Related reading
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