Novita air purifiers are the home-grown Singapore option most people land on once they stop chasing the Dyson on the shelf, and the line runs from a S$180 bedroom unit to a S$1,898 whole-floor machine. The value question is not which Novita is best, it is which CADR you actually need for your room and how much the replacement filter quietly adds each year. Buy too small and the air never clears during a haze week; buy too big and you have paid for a fan motor you run at one quarter power forever. This guide matches every current Novita model to a room size using its official AHAM-rated numbers, prices the filter you will replace every two years, and shows where a S$258 unit does the same real job as one twice the price.
Novita is a Singapore brand, so its air purifiers are tuned for local flats and the one problem that drives most purchases here: haze. Every current model uses an H13 HEPA stage, which traps 99.97 percent of particles down to 0.3 micron, plus a pre-filter, an activated carbon layer for smells, and a built-in ioniser. The H13 grade is the part that matters for haze and dust; the carbon layer handles cooking and pet odour. Everything above that is convenience.
The two numbers that decide whether a unit fits your room are CADR and coverage. CADR (Clean Air Delivery Rate) is how fast the machine pushes out clean air, measured in cubic metres per hour; a higher number clears a given room faster or covers a bigger one. Coverage is the floor area Novita rates the unit for. Both are published on each product page, and the honest move is to size by them rather than by price.
The trap is the running cost. The purifier price is one-off, but the H13 filter is a consumable Novita suggests replacing roughly every 24 months, and the pack runs anywhere from about S$30 to S$268 depending on model. Before you compare two units on sticker price, add the filter to both. A cheaper machine with a pricey filter can cost more over five years than a dearer one with a cheap filter, the same way a low-cost printer punishes you on ink. If you are tracking household running costs across appliances, fold this into your monthly plan with the personal budget calculator.
Prices below are from Novita's official Singapore e-store as of June 2026, and almost every model was on a promotional price at the time. Treat them as a snapshot, not a quote, and check the live product page before you buy, because Novita rotates discounts and the original list prices are higher. The pattern is clear: the budget A5i and A11i cover a bedroom or a small living room, the A6 and A18i handle a large open-plan flat, and the A8i is the flagship for whole-floor or office use.
The 2-in-1 ND series is a separate decision. These combine a dehumidifier with an air purifier in one box, which suits Singapore's damp rainy spells, but you pay for two appliances and the purifier-only CADR is usually lower than a dedicated unit at the same price. Buy an ND model if humidity and mould are the real problem; buy an A-series if clean air alone is the goal. For the dehumidifier maths and electricity draw, our guide on the average water and electricity bill in Singapore shows what an always-on appliance adds to a monthly bill.
| Model | Price (S$) | Smoke CADR (m3/h) | Rated coverage | Best for |
|---|---|---|---|---|
| A5i | from 180 (was 328) | not published | small room | Bedroom, study, value pick |
| A11i | 258 (was 469) | 318.5 | up to ~100 m2 on turbo | Bedroom to small living room |
| A6 | 498 (was 798) | 580 | up to ~190 m2 | Large open-plan HDB or condo living room |
| A18i | 458 (was 899) | 487.9 | up to ~174 m2 (1,873 ft2) | Large living room, heavy haze use |
| A8i | 1,898 | highest in range | whole floor / office | Maximum coverage, commercial use |
| ND2+ (2-in-1) | 458 (was 569) | purifier + dehumidifier | compact rooms | Damp rooms needing both |
The single mistake that wastes money is buying for the floor area on the box rather than the speed you will run the unit at. Rated coverage assumes the purifier is on its highest, loudest setting. Run it on quiet sleep mode in the same room and the effective coverage drops sharply, because CADR falls with fan speed. The fix is to size up: pick a model whose top-speed coverage is well above your room, so it cleans the air on a mid setting you can sleep through.
For a typical HDB bedroom of 10 to 14 square metres, the A5i or A11i is plenty, and the A11i's 318.5 m3/h smoke CADR clears the room several times an hour even on a middle setting. For an open-plan living and dining area of 30 to 50 square metres, the A6 or A18i is the right call; their 487.9 to 580 m3/h CADR handles a haze spike that a bedroom unit would lose to. Only a large landed home, a studio shared with an office, or a small business justifies the A8i.
A useful rule of thumb from clean-air standards: aim for the purifier to exchange the room's air at least four to five times an hour during haze. To check a model, multiply its CADR by roughly 0.6 to estimate the floor area it cleans five times an hour at a 2.4 metre ceiling, then compare that to your room. The A11i at 318.5 m3/h comfortably covers a 15 to 20 square metre bedroom by that test, which is why it beats spending double for a living-room unit you stash in a bedroom.
Singapore's haze risk peaks in the dry season, and the National Environment Agency publishes the PSI and PM2.5 readings you should watch. A purifier only helps if you keep windows shut and run it before the haze arrives, not after. If you live near a busy road, the carbon layer also earns its keep year-round on traffic fumes, not just during haze weeks.
Over five years the filter often costs more than the discount you chased on the unit. Novita rates the H13 filter for roughly 24 months of typical home use, so most owners buy two or three replacement packs over the machine's life. Packs range from about S$30 for a small model to S$268 for the largest, so check the exact filter price on your model's page and treat it as part of the purchase, not an afterthought.
Electricity is the smaller line but not zero if the unit runs daily. The A6 draws up to 63 watts on high and as little as 3 watts on sleep; the A11i sits at 7 to 58 watts. Running a 50-watt unit eight hours a day at Singapore's regulated tariff costs only a few dollars a month, but it is a real recurring cost, and a unit sized too large that you run flat-out wastes both power and filter life. Pairing it with a savings goal calculator keeps the annual filter-plus-power figure honest against the rest of your budget.
Buy through an authorised channel. Novita's own e-store, Harvey Norman, Best Denki and Courts carry the range with local warranty, and Singapore's Lemon Law gives you the right to a repair, replacement or refund on a defective unit within the first six months, when the burden is on the seller to prove it was sold sound. Grey-market or overseas listings can be cheaper on paper but usually void that cover and may not take local filter packs.
Against the big imports, Novita's pitch is local warranty, easy filter supply and prices that undercut the headline brands for the same H13 HEPA grade. A Dyson Pure Cool clears a smaller rated area than a similarly priced Novita A6, and its filter and parts cost more; you pay for the fan-and-app design language. Xiaomi and Levoit can match Novita on CADR for less money, but filter availability and after-sales support in Singapore are less certain, and that matters on a two-year consumable.
Where Novita loses is smart features. The A-series units in the value band have no app, no remote scheduling and a basic display, so if you want phone control and auto-mode tied to a live sensor, a Xiaomi or a higher Novita tier fits better. For most buyers the honest verdict is that an A11i or A6 delivers the clean-air result of a unit costing far more, and the money saved is better kept than spent on a laser display you glance at twice. The same logic that picks a value vacuum applies here, as our guide to the best handheld vacuum in Singapore lays out for appliances generally.
If your bill is the bigger worry than the unit price, also sort out the recurring side of the house. Switching electricity retailer can offset the running cost of an always-on appliance, and our breakdown of the cheapest electricity retailer in Singapore shows where the savings actually sit.
For most homes the A11i at about S$258 is the value pick. Its 318.5 m3/h smoke CADR and H13 HEPA stage clear a bedroom or small living room easily, and it has no app to inflate the price. Step up to the A6 only if you need to cover a large open-plan area above roughly 30 square metres.
Novita H13 replacement filter packs run from about S$30 for the smallest models to around S$268 for the largest, and the brand suggests changing them roughly every 24 months under typical home use. Always check the exact filter price for your specific model before buying, since this consumable can cost more than the discount you saved on the unit over five years.
Yes, provided you keep windows shut and run the unit before the haze arrives. The H13 HEPA stage traps 99.97 percent of particles down to 0.3 micron, including the fine PM2.5 that drives haze readings. One purifier only cleans the room it sits in, so size it to that room and watch the National Environment Agency PSI forecast to start it early.
It is worth it only if damp and mould are a real problem in your home, which is common in Singapore's rainy spells. The ND series combines both functions in one box, but the purifier-only CADR is usually lower than a dedicated air purifier at the same price. If clean air alone is the goal, a standalone A-series unit gives you more cleaning power per dollar.
This is general financial information for Singapore, not personal financial advice. Figures change — verify current rates against the official sources above before acting. See our full disclaimer.