The Leitz TruSens Z-3500H Linked Sensible Air Air purifier delivers efficient air purification even in bigger rooms. Its multi-stage filter scrubs pet hair, home mud and the vast majority of microscopic particles from the air, then it finishes off any microbes with a germicidal ultraviolet lamp. It is a well-specified air purifier with a robust but environment friendly fan, app management, and a helpful, separate air-quality monitor. Nevertheless, the Leitz app is sort of fundamental, and the Z-3500H’s community and sensor connectivity was problematic.
- Excessive quantity, prime quality air purification
- Quiet and environment friendly
- PM1, PM2.5, PM10 and VOC air high quality sensor
- Primary app
- Connectivity issues
Air high quality sensorDistant sensor detects PM1, PM2.5, PM10 particulates and VOCs, telling the air purifier when it must work more durable
Sensible controlsLeitz’s app mirrors the bodily controls, however it additionally gives extra detailed air high quality information, and allows scheduling
Good, good, good, good filtrationA mixed HEPA and carbon filter removes mud, particulates, pollen, mould spores and VOCs, whereas a UV gentle kills germs
Leitz could also be greatest recognized for workplace tools, however its TruSens vary of air purifiers is aimed on the residence – alongside smaller industrial areas similar to outlets and lecture rooms. There are three ‘dumb’ fashions for varied room sizes, together with two good variations that add app management.
I’m testing the Z-3500H, a barely de-tuned model of the range-topping Z-3500. It’s designed to wash the air in rooms with a ground space of as much as 60 sq. metres (m2) – that’s concerning the dimension of a big kitchen/diner. It has a clear air supply price (CADR) of 290 cubic metres per hour (m3/h) for smoke. The Z-3500 alternatively is appropriate for rooms as much as 70m2 and has a CADR of 325m3/h.
The Leitz TruSens Z-3500H Linked Sensible Air Air purifier, to make use of its full identify, in all fairness huge, however it’s a wise system combining white and silver plastics with an eccentric, angled air output. It comes with a separate air high quality sensor that connects wirelessly. In keeping with Leitz, this provides a extra correct studying than you’d get from a sensor constructed into the air purifier itself.
Design and options
- Enticing design with good controls
- Separate air high quality monitor
- Primary app
This is a pretty big air air purifier, noticeably taller than these designed for small rooms. It’s not a lot wider, although, and Leitz has completed an important job of disguising its dimension with a tasteful and interesting design. The white plastic is enlivened by a silver mesh across the 360° air consumption, whereas the air output has an uncommon break up design, damaged up by a silver management bar.
This bar affords management over the 5 fan speeds, and a timer for as much as 12 hours in two-hour increments. You may also toggle the UV lamp or set the air purifier into sleep mode, which extinguishes the touch-sensitive buttons however doesn’t change the chosen fan velocity. Slightly below the controls, there’s a numeric air high quality show, with colored lights indicating good (blue), average (orange) and dangerous (crimson) at a look.
The Z-3500H will get air high quality knowledge from its separate wi-fi sensor. This sniffs out three sizes of particulates – PM1, PM2.5 and PM10 – which are usually given off by car exhausts, cooking and different sources of combustion. It additionally detects risky natural compounds (VOCs), that are given off by some furnishings, paints, cleansing merchandise, and in addition cooking. It beams the readings again to the air purifier, which shows the best one, and units the fan velocity accordingly.
Leitz’s app mirrors the air purifier’s bodily controls and provides in comparatively fundamental scheduling – you may solely outline a single schedule, which, for instance, guidelines out setting the air purifier to run for a few hours within the morning after which once more within the night. There’s no hyperlink up with Alexa or Google Assistant, so you may’t use voice management or construct the Z-3500H into residence automation eventualities.
The app does present a helpful air high quality breakdown, displaying a VOC studying, and PM1, PM2.5 and PM10 particulate ranges in micrograms per cubic metre (μg/m3). It’ll additionally present you historic knowledge by the hour, day, week and month, however this didn’t appear to work reliably – usually there’d be no knowledge seen for a number of days.
The ultimate app function is to indicate the standing of the Z-3500H’s UV lamp and two filters. The HEPA 13 removes a claimed 99.97% of particles measuring 0.3 micrometres or extra, which incorporates most micro organism, mould spores, allergens and heavier smoke particles.
The carbon filter neutralises VOCs and another gases. You should purchase an ordinary substitute, however there are additionally two alternate options specialised in odour or allergen elimination – I did the majority of my testing with the usual filter.
The UV lamp is contained inside a guard that sits within the centre of the filter. Leitz says it’ll final for as much as three years, and replacements can be found for about £18. The usual HEPA filter ought to final for round a 12 months or extra, and prices simply over £35 to exchange. You’ll get by a further three or 4 carbon filters in that point, however you should buy a three-pack of latest carbon layers for £15.
- Quiet and environment friendly
- Wonderful filtration
- Unreliable connectivity
The Leitz’s separate sensor is a superb concept, however I discovered its wi-fi vary to be very disappointing. Even line-of-sight connections have been sketchy from round 5 metres’ separation, whereas the sign appeared to be blocked if nearly any furnishings acquired in the best way.
Sadly, it was an identical story with the air purifier itself. Set up the TruSens app and you may hook up with the Z-3500H with Bluetooth, or be part of it to your community and use Wi-Fi. I discovered I wanted to be inside just a few metres for Bluetooth to be absolutely dependable.
Wi-fi community connectivity was so poor as to be unusable, with the air purifier repeatedly dropping its connection. I attempted placing my router into its most elementary mode, however even with a direct line of sight, Wi-Fi remained unreliable. I attempted to use the accessible firmware replace, however repeatedly acquired a ‘Obtain failed’ message.
Happily, issues are significantly better elsewhere. The Leitz TruSens Z-3500H is barely uncommon amongst air purifiers in that it creates a slight breeze, slightly than a extra diffuse motion of air. Some cleaned air exits straight up from behind the management bar, whereas the rest emerges, angled ahead barely, from the grilles in entrance. That mentioned, it’s not sufficient to double up as an efficient fan on a sizzling day. I measured as much as 3.6 metres per second (m/s) from simply 15cm away, however from a metre away my anemometer might solely detect any airflow on the Turbo setting.
It is a quiet air air purifier at its lowest speeds. From 15cm away I measured the sound at 30.5dB on the bottom, Whisper setting. This rose to 41dB on velocity 1. Issues began to get a lot noisier at velocity 3, reaching 62dB, and 72dB in Turbo mode. From a metre away, sound ranged from a whisper-quiet 25dB as much as 54dB on Turbo.
Leitz has fitted the Z-3500H with a DC motor, which helps to clarify its comparatively modest energy use. It consumed simply 8.3 Watts in Whisper mode, rising to solely 24W on velocity 3. Turbo mode was comparatively power-hungry, although, demanding 58W. I took all of those measurements with the UV lamp on – turning it off diminished energy consumption by about 5W. The distant sensor makes use of a separate mains connection, however its energy consumption was under the 1W minimal of my meter.
In observe, you’ll in all probability depart this air purifier in Auto mode, the place it mechanically adjusts its velocity to match the air high quality. Meaning it’s more likely to spend a lot of its time ticking over in one in all its lowest two speeds, besides if you’re cooking or cleansing. Whereas testing it I managed to burn toast, which despatched the particulate counts rocketing and prodded the fan velocity up by a few ranges. Even after I was cooking meals extra rigorously, the Z-3500H would sniff it out and velocity up barely.
This air air purifier excelled in my difficult smoke check. Shut in a small room with a burning smoke pellet, it stepped itself as much as Turbo mode inside seconds. After three minutes it had lowered the room’s PM2.5 depend from our meter’s most 999 all the way down to a (nonetheless harmful) 594. Inside six minutes, this studying had dropped into the average vary – that’s about twice as quick because the Levoit Core 300S managed to wash up in the identical check. In simply one other minute air high quality fell under 50, rated ‘good’, and the fan velocity started to cut back mechanically.
Must you purchase it?
You need glorious efficiency: This air air purifier reacts rapidly to deteriorating air high quality and performs strongly throughout the board
You need higher good options: The app and connectivity listed below are disappointing.
It is a well-designed air air purifier appropriate for pretty giant household rooms. Offered you don’t place the Z-3500H and its sensor too far aside, you may set and overlook it whereas it really works away to maintain the air contemporary. Its UV lamp gives a welcome additional defence in opposition to airborne sicknesses, too.
At this worth, although, it’s fairly a disgrace that it couldn’t keep a secure Wi-Fi connection and that its app is just a little fundamental. The Dyson Air purifier Sizzling+Cool Formaldehyde has extra options and a significantly better app, however it’s additionally considerably costlier.
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Used as our essential air air purifier for the assessment interval
We check good purifiers with their apps and we check Amazon Alexa and Google Assistant compatibility.
We time how lengthy it takes every air purifier to take away smoke from a closed room.
Leitz says the anticipated lifetime of the HEPA filter is 12-15 months, however the carbon filter solely lasts round 3-4 months. The UV lamp is replaceable, too, however it ought to final 1-3 years. Like all air purifiers, utilizing a filter for too lengthy will result in diminished efficiency. You may lengthen a filter’s efficient life by eradicating it and vacuuming home mud from the outer floor each month. The Z-3500H’s outer pre-filter layer will be rinsed beneath the faucet to assist restore its efficiency.
Air purifiers are primarily a fan with a filter, so we’d anticipate a easy mannequin to final for a number of years of normal use.
Air purifiers do cut back the degrees of pollution and allergens within the air. Additionally they filter out mould spores, pollen, micro organism, and a few viruses. There’s anecdotal proof to counsel they might help with allergy symptoms, and by decreasing particulates within the air they might assist cut back the lung and circulatory injury related to some recognized pollution.
Trusted Critiques check knowledge
Quiet Mark Accredited
First Reviewed Date
Max room dimension
Variety of speeds
Filter substitute gentle
Leitz TruSens Z-3500H Linked Sensible Air Air purifier
285 x 285 x 720 MM
HEPA 13, carbon, UV-C lamp