The haze got worse after our last check: NEA's 24-hour PSI crossed into the Very Unhealthy band on 14 October and peaked at 230 in the west on 18 October, and at noon on 25 October it was still 97 to 126. We re-checked all eight brands on their own Singapore stores that day. The $99.90 Tefal is gone: every Tefal and Sharp purifier is sold out, novita's A5i, A11i and A18i are still sold out, Sterra has dropped its three-Moon bundle and raised its prices, and Coway's Noble AP is now a December pre-order. What you can still get delivered: Sterra's Moon at $229 and Halo at $249, Mistral's MBFAP460 at $289, Sterra's HEPA-14 Breeze Pro and Paws at $329 and Dyson's TP10 at $599. EuropAce's $139 and $199 HEPA-14 pair now ship by 30 November.
The 24-hour PSI peaked at 230 on 18 October, and the cheapest purifiers sold out with it.
> Quick view: Cheapest machine you can get delivered now is Sterra's Moon at $229. EuropAce's HEPA-14 pair ($139 and $199) ship by 30 November. The catch: every Sharp and Tefal purifier, and novita's A5i, A11i and A18i, are sold out. Re-checked 25 October on each brand's own store.
PRICE: the EPU1200F at $139 (U.P. $299) and the EPU3380E at $199 (U.P. $459) are still the cheapest HEPA-14 machines in this guide. Both use an H14 filter rated to capture up to 99.995% of particles down to 0.3 microns, a DC motor and a filter-change reminder. The EPU1200F moves 200m³/h, enough for a typical HDB bedroom with the door shut; the EPU3380E moves 338m³/h and is rated by EuropAce for up to 700 sq ft, so it is the one for a living room.STOCK NOW: both went on sale on 13 September and had become pre-orders by 12 October, when EuropAce promised delivery from 11 November. On 25 October both are still pre-orders, now marked 'to be shipped by 30 November', so the date has slipped by almost three weeks.FILTERS: the EPU3380E replacement pack is $79.90 and in stock; EuropAce listed the EPU1200F pack at $49.90 on our last check.IN STOCK INSTEAD: EuropAce's larger 450m³/h, 930 sq ft HEPA purifier-fan is $499 (U.P. $699), listed as an air-freight new arrival rather than a pre-order. Most of its other purifiers and air washers are pre-orders too. EuropAce is also running a gift-with-purchase to 31 December 2026: gifts worth up to $1,357 when you buy any two items worth $400 or more.BEST FOR: anyone who can wait five weeks and wants HEPA-14 at the lowest price here.
Pre-order (25 Oct), to be shipped by 30 Nov: EPU1200F $139 (U.P. $299), HEPA-14, 200m³/h · EPU3380E $199 (U.P. $459), HEPA-14, 338m³/h. EPU3380E filter $79.90 in stock. In stock now: 450m³/h purifier-fan $499.
STOCK NOW: on 25 October Sharp's own Singapore store, now running an October Sale, still shows every one of its air purifiers out of stock, for a second check running. The 23m² FP-J30E is listed at $159 (U.P. $214), $10 more than on 12 October; the 38m² KI-N50E-H humidifying purifier is $559 (U.P. $1,063), the 62m² Purefit is $699, the 84m² FX-S120E-H is $799 (U.P. $1,595) and the 30m² Purefit Mini is $349.COMBO UNITS GONE TOO: the 30L 4-in-1 dehumidifier-purifier DW-T30FE ($649), which was down to its last unit on 12 October, is now out of stock, as is the 16L 2-in-1 at $509. A new 3-in-1 dehumidifier, purifier and laundry dryer is listed as Coming Soon at $616.WHY IT STAYS: when Sharp restocks, the FX-S120E-H is still the only machine in this guide rated for a full 84m² living room, and Plasmacluster ions work on smoke smell that has settled into curtains and sofas. Sharp has restocked the FP-J30E before, so this reads as a sell-out rather than a withdrawal.BEST FOR: a stock alert on the FX-S120E-H if you have a large open-plan living room.
ALL air purifiers SOLD OUT on Sharp's own store (25 Oct): FP-J30E $159 (was $149) · KI-N50E-H $559 · Purefit 62m² $699 · FX-S120E-H $799. The 30L 4-in-1 DW-T30FE ($649) has now sold out too.
STOCK NOW: the cheapest machine in our 12 October check has gone. On 25 October Tefal's own Singapore store shows the Pure Air Mini PT1520 sold out at $99.90 (U.P. $180), the two-unit PT1520 bundle sold out at $179, and the Pure Air Compact PT2220 sold out at a higher $169 (U.P. $249), up $20 from $149. Its 3-in-1 replacement filter (XD6270) is sold out too, at $59.90 (U.P. $75), so Tefal currently has no air purifier you can order.THE COMPACT: the PT2220 has sold out and come back several times since August, so Tefal restocks it rather than retiring it. What you would be waiting for is a well-specified bedroom machine: 198m³/h CADR, three-layer filtration with a dedicated Allergy+ layer and activated carbon, three automatic modes, and 2.3kg, light enough to carry between rooms.THE MINI: Tefal does not publish an airflow figure for it, so treat it as a single small bedroom or study machine.BEST FOR: a stock alert, if you want an allergy-focused bedroom unit under $200.
SOLD OUT (25 Oct): Pure Air Mini PT1520 $99.90 (U.P. $180), Pure Air Compact PT2220 now $169 (was $149, U.P. $249), 2-unit PT1520 bundle $179, and the $59.90 PT2220 filter.
PRICE: Mayer cut this unit to $309 on 27 August and $259 on 27 September, raised it to $289 on 12 October, and on 25 October it holds at $289 against a $599 list price, in stock.WHAT IT IS: a 46-inch blade-free tower sold through Mayer's own Singapore store that combines a DC-motor fan with HEPA-13 filtration rated to remove up to 99.97% of particles down to 0.3 microns, plus UV sterilisation and a filter-replacement indicator. Five air modes (auto, turbo, sleep, natural, normal) and auto left-right oscillation across 30/60/90/120°. During haze, when you want windows shut and air still circulating, having the fan and the filter in one machine genuinely helps, and at $289 it is $310 less than Dyson's TP10.THE CATCH: the $39 replacement HEPA-13 filter is still sold out, and on 25 October so is every other Mistral fan-purifier filter, so buy a spare the day it returns.REST OF THE RANGE: the 42-inch MBFAP4236DRW with Wi-Fi is $299 (U.P. $499) and in stock, but its $50 filter, the one Mistral filter in stock on 12 October, has now sold out. The smaller MBFAP250 tower has gone from $159 to $299 (U.P. $399) and is sold out.BEST FOR: small flats that would otherwise buy a tower fan as well.
In stock (25 Oct): $289 (U.P. $599), unchanged. 46" blade-free DC fan + HEPA-13 + UV, 5 modes. $39 filter still SOLD OUT. 42" MBFAP4236DRW $299 in stock (its $50 filter now sold out); MBFAP250 up to $299 and sold out.
STOCK NOW: on 25 October novita's own store still shows the A5i sold out in both colours at $180 (U.P. $328), the A11i sold out in all three colours at $258 to $268 (U.P. $469) and the A18i sold out at $458 (U.P. $899). The variant labels now carry restock dates: delivery or collection from 26/27 October for the A5i, 2/3 November for the A11i and 4/5 November for the A18i, so a stock alert on the A5i is worth setting this weekend. The one purifier in stock is the flagship A8i at $1,898.WHAT THE A5I IS: a genuine H13 HEPA with a carbon stage rated at 337m³/h CADR, enough for a large bedroom or a small living room, backed by a local warranty, a local service centre and filters you can buy off the shelf.WHAT TO BUY INSTEAD: novita's 2-in-1 dehumidifier-purifiers have thinned out too. The ND2+ at $398 (U.P. $569) is in stock in Dove White and Classic Grey, and the ND60i+ at $798 (U.P. $1,098) is in stock; the ND25.5i+ ($488), ND26+ ($528) and ND50+ ($698) have sold out since 12 October. If humidity is as big a problem in your flat as the haze, one of these does both jobs from one plug.BEST FOR: a stock alert on the A5i, or a damp flat today.
Still SOLD OUT (25 Oct): A5i $180 (label: from 26/27 Oct), A11i $258-$268 (from 2/3 Nov), A18i $458 (from 4/5 Nov). In stock: A8i $1,898, 2-in-1 ND2+ $398 (U.P. $569) and ND60i+ $798.
THE CHANGE: Sterra has pulled the bundle that put this brand on the list. The three-Moon buy-2-get-1-free bundle at $458 is gone, and its link now opens the single Moon page. Prices went up across the HEPA-13 and HEPA-14 range too. MOON: now $229 for every version (it started at $189 on 12 October), and only the Space Grey UV model is in stock; Snow White and Sakura Pink are sold out. It is HEPA-13, rated for 57m² at 280m³/h, near-silent at 20dB, with one-touch control and no app. HALO: the newest unit, launched 1 October, holds at $249 in stock, and the Twin Halo bundle is listed at $448. It pairs a HEPA-13 filter with activated carbon, UV and ion, a laser PM2.5 sensor and a 300m³/h CADR rated for 36m², and its filter is $59 for about 2,200 hours.HEPA-14: the Breeze Pro is now $329 for one (up $50), $658 for two and $987 for three. The pet-tuned Paws is also $329 for one but $548 for two and $807 for three, so buying Paws in pairs is the cheaper way into HEPA-14 here. Free delivery and installation.BEST FOR: the cheapest purifier you can have delivered this week, or two bedrooms at once with a Twin Halo.
25 Oct: Moon buy-2-get-1-free bundle WITHDRAWN (its link now opens the single Moon). Moon $229 (Space Grey UV in stock) · Halo $249, Twin Halo $448 · Breeze Pro $329 / 2 for $658 · Paws $329 / 2 for $548. Free delivery & installation.
PRICE: on 25 October Dyson's own Singapore store lists the TP10 at $599, in stock, with no markdown. The sitewide code PEAK50 that took it to $549 on 12 October is no longer shown on the product page or the homepage, so budget for $599. This is still the most-moved price in the guide: $399 on 30 July, $499 from 4 to 16 August, $599 on 27 August, $499 on 4 and 12 September, $399 on 27 September and $599 since 12 October.WHAT IT IS: a 2-in-1 purifying fan with a fully sealed filtration system: a 360° glass HEPA H13 filter that captures 99.95% of particles as small as 0.1 microns, wrapped in an activated carbon layer for gases and odours. Sealed matters, because what the machine traps stays trapped rather than leaking back out around the filter. Integrated sensors report air quality on the LCD screen, it oscillates up to 350°, and night mode runs it quietly while you sleep. Grab PayLater splits the $599 into four instalments of $149.75.THE COMPARISON: it is $310 more than the Mistral tower at #4 for the same two jobs.BEST FOR: sealed filtration plus a cooling fan, if the gap to Mistral is worth it to you.
$599 on 25 Oct, in stock, no markdown. PEAK50 no longer shown on Dyson's product page or homepage. Sealed HEPA H13 + carbon, 350° oscillation.
The premium option, and the only one on this list where someone else changes your filters.NOW A PRE-ORDER: on 25 October Coway's own air purifier listing labels the Noble AP 'Pre-Order, ETA Dec'26', still flagged as a Special Offer from $1,588 against a $2,038 usual price. So the one large-room machine in this guide you could order on 12 October will not arrive until December.WHAT IT IS: the Korean brand's flagship purifier for Singapore, running multi-stage filtration (a 4D pre-filter, a smoke and allergen filter, a 4D double HEPA and two deodorisation filters) with UV-C sterilisation across 66m².SERVICING: it comes with visits every six months, when a technician cleans the unit and swaps consumables so the machine doesn't quietly degrade into an expensive fan. That is Coway's whole proposition.PRICE HISTORY: from $1,588 on 16 August, $1,349.80 on 27 August and 4 September, then back to from $1,588, where the headline and the default outright configuration agree.BEST FOR: a single serviced appliance for a large space, if you can wait for December and would rather not think about filter part numbers for the next five years.
Pre-Order, ETA Dec 2026 (25 Oct): from $1,588 (U.P. $2,038), Special Offer. Multi-stage + UV-C, 66m², servicing every 6 months included.
| Brand & model | Price now | Usual price | Filter | Stock (25 Oct) | Best for |
|---|---|---|---|---|---|
| EuropAce EPU1200F / EPU3380E | $139 / $199 | $299 / $459 | HEPA-14 | Pre-order, ships by 30 Nov | Cheapest HEPA-14 if you can wait |
| Sharp FP-J30E / FX-S120E-H | $159 / $799 | $214 / $1,595 | HEPA + Plasmacluster | All Sharp purifiers sold out | Stock alert for an 84m² living room |
| Tefal Pure Air Mini PT1520 / Compact PT2220 | $99.90 / $169 | $180 / $249 | HEPA Allergy+ | Both sold out | Stock alert for an allergy bedroom unit |
| Mistral 46" Blade-Free Fan + Purifier MBFAP460 | $289 | $599 | HEPA-13 + UV | In stock ($39 filter sold out) | Fan and purifier in one |
| novita A5i / A11i | $180 / $258 | $328 / $469 | H13 HEPA + carbon | Sold out; labels say from 26 Oct / 2 Nov | Local service centre, when restocked |
| Sterra Moon / Halo | $229 / $249 | No markdown | HEPA-13 (Halo adds carbon) | Moon Space Grey UV and Halo in stock | Cheapest machine you can get now |
| Dyson Purifier Cool Gen1 TP10 | $599 | $599 | Sealed HEPA H13 + carbon | In stock | Sealed filtration + cooling fan |
| Coway Noble AP AP-2021A | from $1,588 | $2,038 | Multi-stage + UV | Pre-order, ETA December | Premium, with servicing included |
We have now priced this list nine times on every brand's own Singapore store: 30 July, 4 August, 16 August, 27 August, 4 September, 12 September, 27 September, 12 October and 25 October 2026. Between the last two checks the haze hit its worst. NEA's 24-hour PSI crossed into the Very Unhealthy band (201 to 300) on 14 October, reached 229 in the central region on 16 October and 230 in the west on 18 October, then eased below 100 on 22 October before climbing again. At noon on 25 October it read 126 west, 107 east, 105 central, 102 north and 97 south (what each PSI band means for your family). MOH's Haze Subsidy Scheme has been running since 12 October. Stock moved again, and this time prices did too.
What did not move: Mistral's MBFAP460 at $289 and Sterra's Halo at $249.
Buying now? Size up: pick a unit rated for a larger area than your room, because you will run it on low overnight, and check the seller has replacement HEPA filters in stock before you commit.
If you want the short answer: buy a HEPA-13 or HEPA-14 unit with enough airflow for the room you sleep in, from a seller who can deliver it this week. Under $300, Sterra's Moon at $229 and Halo at $249 are the cheapest machines you can get now (the Halo is the better pick, for its carbon layer and 300m³/h), and Mistral's MBFAP460 fan-purifier at $289 is in stock too, though its filter is not. If you can wait for 30 November, EuropAce's EPU1200F at $139 and EPU3380E at $199 are still the best HEPA-14 value here. For HEPA-14 today, two of Sterra's Paws cost $548, less than two Breeze Pros. Dyson's TP10 at $599 is the sealed-filtration option. A full 84m² living room has no in-stock answer on this list until Sharp restocks the FX-S120E-H at $799; Coway's serviced Noble AP from $1,588, rated for 66m², can be pre-ordered for December.
The spread runs from $139 to $1,898, which sounds arbitrary until you see what the money is buying: room size first, then who changes the filter. Four bands, at the prices verified on 25 October 2026.
Then there is the cost the sticker price hides. Filters are the real running expense: $39 to about $99 a year per machine across the models here. Mayer lists the Mistral filters at $39 and $50, but none of the fan-purifier ones was in stock on 25 October. EuropAce lists the EPU3380E pack at $79.90 (in stock), Tefal's PT2220 filter is $59.90 (sold out), Sterra's Halo filter is $59, and novita's 24-month PuriPRO packs work out near the top of that band. In a haze year budget above that, because a unit running flat out through a smoky fortnight will not get twelve months out of a filter.
The rule of thumb that matters more than any of these figures: two $249 purifiers in the two rooms you actually sit in will do more for you than one $599 machine parked in the hallway.
Every unit here is sold direct by the brand, which is the short answer to where to buy. EuropAce, Tefal, Sharp, novita, Sterra, Dyson and Coway all run their own Singapore online stores, and Mistral sells through Mayer's. Buying direct is what gets you the local warranty, filters you can reorder later, and the promotions that never appear on marketplaces: novita's trade-in, Sterra's multi-unit pricing, EuropAce's gift-with-purchase, Sharp's October Sale. It is also the only place the stock counters are honest, which during an episode like this one matters more than the price.
Offline, the same models turn up at Best Denki, Courts, Harvey Norman, Gain City and the department-store electronics floors, usually at list price but occasionally with a store voucher or bundled delivery that beats the online deal. It is worth a look if you want to hear how loud a unit actually is before committing, because spec sheets quote decibels at the lowest fan speed, which is not the speed you will use during haze.
What to avoid: unusually cheap Shopee and Lazada listings for the same model numbers. Air purifiers are a common parallel-import category, and a grey set typically means no local warranty and filters you then have to source yourself, which on a machine whose whole running cost is filters is the expensive kind of saving.
The complaint that actually drives people to buy mid-haze is the smell, and it is worth understanding why a plain HEPA filter does nothing about it. Haze carries two separate problems: fine particles (PM2.5), which HEPA traps, and gaseous compounds, which pass straight through a HEPA filter because they are not particles at all. Smell is the second problem.
That is what the activated-carbon layer is for, and it is the spec to check before you buy. A thin carbon-coated mesh is not the same as a real carbon filter, and it saturates in weeks rather than months. Sealed systems help too: Dyson's TP10 (#7) is fully sealed, so gases the carbon has captured cannot leak back around the filter edge. Sharp's Plasmacluster models (#2) take a different route, releasing ions into the room to work on odours that have already settled into curtains and sofas, which is where smoke smell tends to live once the air itself has cleared.
Practical order of operations during a haze episode: keep windows shut, run the purifier on a higher speed than feels necessary, and wash or air soft furnishings afterwards. No purifier removes a smell that is coming out of your curtains.
It's an official warning, not a sales line. The Singapore Institute of International Affairs released its Haze Outlook 2026 on 24 June 2026 and rated the region 'Red', meaning a high risk of a severe transboundary haze event. It is only the second Red rating since the annual report started in 2019 (the first was 2023), and the report names August and September as the peak danger period, driven by El Niño, a positive Indian Ocean Dipole and drier-than-usual conditions through to around October. It has since happened, and it ran later and worse than forecast. On 4 September 2026 NEA's 24-hour PSI reached 106 in the central region, inside the Unhealthy band of 101 to 200. It came back to 110 on 27 September, climbed to 192 in the central region on 9 October, and crossed into the Very Unhealthy band (201 to 300) on 14 October, peaking at 229 central on 16 October and 230 west on 18 October. At noon on 25 October it was still 97 to 126 across the island. MOH switched on the Haze Subsidy Scheme from 12 October for the first time since 2015. Stock is the practical lesson: by 25 October every Sharp and Tefal purifier and novita's three main models had sold out. Buy between episodes rather than during one.
Haze and allergies pull in slightly different directions, and the machine that handles both is the one with a real carbon layer and enough airflow for the room you actually sleep in. Haze is PM2.5 plus gases, so you need HEPA and activated carbon. Allergies are usually dust mites, dander and pollen, which are larger particles that any HEPA-13 catches, but they need a high air-change rate to be cleared before they resettle. On 25 October that points at these picks. For the highest filter grade you can get delivered now, Sterra's Breeze Pro and Paws are HEPA-14 units at $329 each (the Paws is $548 for two). EuropAce's two HEPA-14 models bring the grade down to $139 and $199, but they are pre-orders shipping by 30 November. For airflow plus carbon in stock today, Sterra's Halo at $249 pairs HEPA-13 with an activated-carbon layer at 300m³/h, and Dyson's TP10 ($599) is fully sealed. Tefal's PT2220 ($169) runs the best dedicated Allergy+ layer here, but it and the smaller Mini are both sold out. What none of them fix is a bedroom with the window open, so during a haze episode keep it shut and run the machine continuously rather than in bursts.
Match the CADR to the room, not the marketing headline. A typical HDB bedroom is roughly 10 to 15m². A purifier rated around 200 to 280m³/h CADR (EuropAce's EPU1200F at 200m³/h, Tefal's PT2220 at 198m³/h, Sterra's Moon at 280m³/h) will turn the air over several times an hour with the door shut. A living room of 25 to 40m² needs 300m³/h or more: Sharp's FX-S120E-H (84m² rating), EuropAce's EPU3380E (338m³/h, 700 sq ft), novita's A5i (337m³/h), Sterra's Halo (300m³/h, 36m²) and Dyson's TP10 sit here. On 25 October only the Halo and the Dyson were in stock; EuropAce's ships by 30 November and novita's A5i is labelled for delivery from 26/27 October. One thing manufacturers don't say loudly: coverage ratings assume the room is closed. An open-plan HDB living-dining area with the kitchen door open behaves like a much larger room, so size up rather than down, and during haze keep windows shut and run the unit continuously rather than in short bursts.
Marginally, and less than filter size and airflow do. A HEPA-13 filter captures at least 99.95% of 0.3-micron particles; HEPA-14 raises that to 99.995%. Haze particles are PM2.5, well within what a HEPA-13 handles, so for most homes a HEPA-13 unit running at the right airflow beats a HEPA-14 unit that's undersized for the room. Where HEPA-14 helps is for allergy and asthma sufferers who want the extra margin (Sterra's Breeze Pro and Paws at $329, and EuropAce's EPU1200F and EPU3380E at $139 and $199 on pre-order, are the HEPA-14 options here). What matters more during haze is a carbon layer, because haze carries smoke odours and gases that HEPA alone doesn't remove, and every unit on this list except the most basic includes activated carbon.
Filters are the real running cost and they're worth checking before you buy. Mayer lists the Mistral MBFAP460 filter at $39, the cheapest here, though it was still sold out on 25 October, and the MBFAP250 and 42-inch MBFAP4236DRW filters at $50 (both sold out too); EuropAce lists the EPU3380E pack at $79.90, in stock, and listed the EPU1200F pack at $49.90 on our 12 October check; Tefal's PT2220 filter is $59.90 and sold out; Sterra's Moon filter is $55, the Halo's $59 and the Breeze Pro's $75; novita's larger units take a 24-month PuriPRO pack listed at $198, which works out to about $99 a year. Most manufacturers quote 6 to 12 months per filter under normal use, but that assumes normal air. A haze episode loads a filter far faster, and a purifier running 24/7 on high through a smoky fortnight can eat months of filter life. Budget for one extra filter per unit this year, buy it before the haze rather than during, and check whether the model has a filter-change indicator (the Mistral tower and most units here do).
Every price in this article was taken from the brand's own Singapore website, first on 30 July 2026 and re-checked on 4 August, 16 August, 27 August, 4 September, 12 September, 27 September, 12 October and again on 25 October 2026, and that's deliberate. Marketplace listings for air purifiers are a common home for parallel imports and grey-market sets, which usually means no local warranty and filters you then have to source yourself. Buying direct also gets you the promotions that only run on the brand store, such as Sterra's multi-unit Paws and Twin Halo pricing, EuropAce's gift-with-purchase, Sharp's October Sale pricing and novita's trade-in when its purifiers are in stock, and for Coway the six-monthly servicing visits that are the whole point of that model. Brand stores are also the only place the stock counters and pre-order dates are honest, which on 25 October mattered more than price. Do compare, but check that the seller is the brand's own official store before you buy on price alone.
Buy now, from whatever is actually in stock, or set a stock alert on one specific model. The PSI went from 110 on 27 September to 230 in the west on 18 October, eased below 100 on 22 October and was back at 97 to 126 at noon on 25 October, and each swing has emptied shelves faster than they refill. By 25 October every Sharp and Tefal purifier and novita's A5i, A11i and A18i were sold out, EuropAce's $139 and $199 models were pre-orders shipping by 30 November, and Coway's Noble AP had become a December pre-order. What you can get delivered on 25 October, in the order we would buy it: Sterra's Halo at $249 (or the Moon at $229) for a bedroom; Mistral's blade-free tower at $289 if you want a fan as well, buying its $39 filter as soon as it restocks; two of Sterra's HEPA-14 Paws for $548 to cover two bedrooms; and Dyson's TP10 at $599 if you want sealed filtration. novita's A5i ($180) is labelled for delivery from 26/27 October, which makes it the one stock alert worth setting this week. Whatever you buy, run it in the room you sleep in with the door and windows shut, on a higher speed than feels necessary, rather than moving one machine around the flat.
Look for two things beyond the HEPA rating: a generous activated-carbon layer, and a pre-filter you can actually pull out and rinse. Pet dander is a larger particle than haze PM2.5, so almost any HEPA-13 unit will capture it. The problem is odour, which is a gas and needs carbon, and hair and fluff, which clog a fine filter fast and shorten its life. Of the units here, Sterra's Paws ($329 for one, $548 for two) is the only one specifically tuned for dander and pet smells, using a HEPA-14 filter, and Sterra sells its washable pre-filters for $30. Otherwise, EuropAce's EPU3380E (#1) at $199 is the sensible pet-household choice if you can wait for it to ship by 30 November, since 338m³/h turns the air over often enough to keep up with a shedding animal, and Dyson's TP10 (#7) has the carbon layer plus a fully sealed body so trapped dander cannot leak back out. novita's A5i (#5) fits too when it is back in stock, which its label puts at 26/27 October. Whatever you choose, plan on vacuuming the pre-filter monthly rather than quarterly.
Yes, and in Singapore it is often the right combination, because they do different jobs and do not cancel each other out. The purifier pulls particles out of the air; the dehumidifier pulls moisture out. Running both in a closed room during haze is fine and is what most people with mould or dust-mite problems already do. Two practical notes. First, keep them a little apart rather than side by side, so the dehumidifier's warm exhaust is not blowing straight into the purifier's intake and confusing its air-quality sensor. Second, a dehumidifier is not a substitute for a purifier, because dropping humidity does nothing to PM2.5. If you would rather not run two machines, Sharp's own store sells combined units, a 30L 4-in-1 (dehumidifier, purifier, shoe dryer and laundry dryer) at $649 from $799 and a 16L 2-in-1 at $509, but both were out of stock on 25 October. novita's ND2+ ($398, U.P. $569) and ND60i+ ($798, U.P. $1,098) do both jobs from one plug and are in stock, and EuropAce sells dehumidifiers with a standalone HEPA purifier from $249 (14L, U.P. $569), though those were pre-orders on 25 October. A combo unit is the space-saving answer, but a dedicated purifier will almost always move more air for the money.
