Verdict
The Leitz TruSens Z-3500H Connected Smart Air Purifier deport effective air purification even in larger room . Its multi - stage filter scrubs best-loved hair , house rubble and the majority of microscopic atom from the breeze , then it eat up off any microbes with a germicidal ultraviolet lamp . This is a well - specify purifier with a powerful yet efficient rooter , app ascendence , and a useful , separate air - tone varan . However , the Leitz app is quite basic , and the Z-3500H ’s web and detector connectivity was problematic .
Pros
Cons
Key Features
Introduction
Leitz may be best cognize for part equipment , but its TruSens scope of air purifiers is get at the house – alongside smaller commercial-grade spaces such as shops and schoolroom . There are three ‘ dumb ’ models for various way sizes , along with two smart versions that add app control .
I ’m testing the Z-3500H , a slimly de - tuned version of the mountain range - top Z-3500 . It ’s designed to clean the melody in rooms with a flooring area of up to 60 square metres ( m2 ) – that ’s about the size of a bombastic kitchen / buffet car . It has a sporting air delivery pace ( CADR ) of 290 cubic metres per time of day ( m3 / h ) for smoking . The Z-3500 on the other hired hand is suitable for room up to 70m2 and has a CADR of 325m3 / h.
The Leitz TruSens Z-3500H Connected Smart Air Purifier , to use its full name , is middling grownup , but it ’s a smart twist combining white and silver plastics with an eccentric , slant atmosphere output . It comes with a separate melody quality sensor that connects wirelessly . According to Leitz , this give a more exact reading than you ’d get from a sensor built into the purifier itself .
Design and features
This is a fairly big air purifier , perceptibly taller than those plan for small rooms . It ’s not much full , though , and Leitz has done a slap-up line of work of disguising its size with a tasteful and appealing design . The white charge plate is animate by a silver meshwork around the 360 ° airwave ingestion , while the air output has an strange split design , broken up by a fluent control bar .
This bar offers control over the five fan speeds , and a timer for up to 12 60 minutes in two - hour growth . you may also toggle the UV lamp or jell the purifier into nap mode , which extinguishes the feeling - sensitive buttons but does n’t vary the selected fan speed . Just below the controls , there ’s a numeric atmosphere quality presentation , with coloured lights indicating good ( blue ) , moderate ( orange ) and forged ( red ) at a coup d’oeil .
The Z-3500H get melody quality data point from its separate wireless sensor . This whiff out three sizes of particulates – PM1 , PM2.5 and PM10 – which be given to be give off by vehicle exhaust system , cooking and other sources of combustion . It also detects volatile organic compound ( VOCs ) , which are given off by some furnishings , paints , cleaning product , and also fudge . It beam the readings back to the purifier , which displays the highest one , and set the rooter speed accordingly .
Leitz ’s app mirror the purifier ’s physical controls and add together in relatively basic programming – you’re able to only delimitate a single schedule , which , for example , govern out setting the purifier to run for a distich of hours in the morning and then again in the eve . There ’s no link up with Alexa or Google Assistant , so you ca n’t habituate vocalisation control or build the Z-3500H into home automation scenario .
The app does furnish a utilitarian air quality breakdown , showing a VOC version , and PM1 , PM2.5 and PM10 particulate levels in mcg per cubic metre ( μg / m3 ) . It ’ll also show you historical data by the hour , day , week and month , but this did n’t seem to work reliably – often there ’d be no data visible for several days .
The last app feature is to show the status of the Z-3500H ’s UV lamp and two filter . The HEPA 13 removes a claimed 99.97 % of speck assess 0.3 micrometres or more , which includes most bacteria , mould spores , allergens and enceinte sens particles .
The carbon paper filter negate VOCs and some other flatulence . you could buy a standard replacement , but there are also two alternatives specialised in odour or allergen removal – I did the majority of my testing with the received filter .
The UV lamp is contained within a guard that sit in the centre of the filter . Leitz order it will last for up to three years , and replenishment are uncommitted for about £ 18 . The stock HEPA filter should last for around a year or more , and costs just over £ 35 to exchange . You ’ll get through an additional three or four carbon filters in that sentence , but you’re able to corrupt a three - clique of new carbon layers for £ 15 .
Performance
The Leitz ’s separate sensor is a bang-up idea , but I found its wireless range to be very dissatisfactory . Even line - of - sight connections were unelaborated from around five metres ’ detachment , while the signaling seemed to be obstruct if almost any piece of furniture got in the way .
regrettably , it was a standardised story with the purifier itself . set up the TruSens app and you could connect to the Z-3500H with Bluetooth , or join it to your meshing and use Wi - Fi . I determine I require to be within a few metres for Bluetooth to be fully reliable .
Wireless meshing connectivity was so poor as to be unusable , with the purifier repeatedly dribble its connection . I tried put my router into its most basic modal value , but even with a direct line of visual modality , Wi - Fi remained treacherous . I tried to apply the available firmware update , but repeatedly got a ‘ Download failed ’ substance .
Fortunately , things are much better elsewhere . The Leitz TruSens Z-3500H is somewhat strange among melodic phrase purifier in that it creates a slight breeze , rather than a more diffuse movement of aviation . Some cleaned breeze exits direct up from behind the control Browning automatic rifle , while the balance emerge , angled forth somewhat , from the grilles in front . That said , it ’s not enough to repeat up as an effective fan on a spicy day . I measured up to 3.6 metres per 2nd ( m / s ) from just 15 cm away , but from a metre off my anemometer could only observe any airflow on the Turbo mise en scene .
This is a quiet air purifier at its lowest speeds . From 15 cm off I measure the sound at 30.5dB on the lowest , Whisper coiffe . This rose to 41dB on speed 1 . Things started to get much noisy at amphetamine 3 , reach 62dB , and 72dB in Turbo mode . From a metre away , phone range from a voicelessness - smooth 25dB up to 54dB on Turbo .
Leitz has conform to the Z-3500H with a DC motor , which helps to explain its relatively modest power economic consumption . It consumed just 8.3 Watts in Whisper mode , rising to only 24W on speed 3 . Turbo style was relatively power - hungry , though , ask 58W. I took all of these mensuration with the ultraviolet light lamp on – turn it off reduced power consumption by about 5W. The remote sensing element uses a disjoined mains connection , but its baron consumption was below the 1W minimum of my meter .
In pattern , you ’ll probably leave this purifier in Auto mode , where it mechanically adjusts its hurrying to cope with the zephyr quality . That means it ’s potential to spend much of its sentence check over in one of its lowest two speeds , except when you ’re cooking or cleaning . While try out it I managed to burn toast , which post the particulate counts rocket and stab the sports fan fastness up by a couple of level . Even when I was cooking food more carefully , the Z-3500H would sniff it out and speed up slimly .
This air purifier excelled in my intriguing smoking test . Shut in a little room with a burn off smoke shot , it stepped itself up to Turbo mode within endorsement . After three moment it had glower the elbow room ’s PM2.5 reckon from our meter ’s maximum 999 down to a ( still serious ) 594 . Within six minutes , this reading had dropped into the moderate range – that ’s about twice as fast as the Levoit Core 300S managed to clean up in the same test . In just another minute air quality fall below 50 , rated ‘ good ’ , and the devotee f number start to reduce mechanically .
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Should you buy it?
This gentle wind purifier reacts cursorily to deteriorate air lineament and do strongly across the board
The app and connectivity here are disappointing .
Final Thoughts
This is a well - designed air purifier suitable for jolly large kinfolk way . ply you do n’t place the Z-3500H and its detector too far apart , you’re able to set and forget it while it crop off to keep the air bracing . Its ultraviolet light lamp provides a welcome redundant defense against airborne illness , too .
At this Leontyne Price , though , it ’s quite a ignominy that it could n’t assert a stable Wi - Fi connection and that its app is a little basic . TheDyson Purifier Hot+Cool Formaldehydehas more features and a much better app , but it ’s also significantly more expensive .
Trusted Score
How we test
Unlike other sites , we test every air purifier we review thoroughly over an extended period of time . We use industry stock tests to equate features by rights . We ’ll always tell you what we retrieve . We never , ever , live with money to review a product .
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FAQs
Leitz says the anticipated life-time of the HEPA filter is 12 - 15 months , but the carbon copy filter only lasts around 3 - 4 months . The ultraviolet light lamp is replaceable , too , but it should last 1 - 3 years . Like all air purifiers , using a filter for too long will direct to rock-bottom performance . you’re able to prolong a filter ’s effective life by removing it and vacuuming house dust from the KO’d surface every calendar month . The Z-3500H ’s outer pre - filter bed can be rinse off under the tap to aid restore its carrying into action .
Air purifiers are fundamentally a fan with a filter , so we ’d ask a simple theoretical account to last for several old age of regular usance .
Air purifiers do reduce the level of pollutants and allergens in the air . They also filter out mould spores , pollen , bacterium , and some viruses . There ’s anecdotical evidence to advise they can assist with allergic reaction , and by reducing particulates in the atmosphere they may help reduce the lung and circulative damage associated with some do it pollutants .
