Sharp UA-HD40U-L Air Purifier with Humidification for Small Rooms – Air Flow 216 m3/h, Anti-Allergen Triple Filter (HEPA), Plasmacluster Ion Generator Combats Odours and Static


Sharp UA HD 40U Comparison UA HD50E Comparison UA HD60E Comparison
Room size max [m2] 21 26 38 48
Air flow in max [m3/h] 60-180 60-216 60-306 90-396
Humidification max [ml/h] 440 600 660
Noise level [dBA] 25-46 23-47 23-55 25-55
Filters Pre-Filter / HEPA Pre-Filter / Odour / HEPA Pre-Filter / Odour / HEPA Pre-Filter / Odour / HEPA
Sensors Dust / Humidity / Temperature Odour / Dust / Humidity / Temperature Odour / Dust / Humidity / Temperature
Operating Modes Medium / Maximum / Sleep / Quick Clean Auto / Advanced Auto / Low / Medium / Maxium / Pollen / Humidification Auto / Advanced Auto / Low / Medium / Maxium / Pollen / Humidification Auto / Advanced Auto / Low / Medium / Maxium / Pollen / Humidification
Replacement filter compatibility HEPA Filter UZ-HG3HF HEPA Filter UZ-HD4HF / Odour Filter UZ-HD4DF / Humidification Filter UZ-HD6MF HEPA Filter UZ-HD4HF / Odour Filter UZ-HD4DF / Humidification Filter UZ-HD6MF HEPA Filter UZ-HD6HF / Odour Filter UZ-HD6DF / Humidification Filter UZ-HD6MF
Height / Width / Depth [mm] 182 x 400 x 463 615 x 399 x 230 615 x 399 x 230 637 x 420 x 242
Features 4 Available Settings / 2 Level Filter System / Library Quiet / Integrated Handles 3 Fan Speeds / Timer / Auto-shutdown / Ion Shower Mode / Odour and Dust Level Indicator / Child Lock 3 Fan Speeds / Timer / Auto-shutdown / Ion Shower Mode / Odour and Dust Level Indicator / Child Lock 3 Fan Speeds / Timer / Auto-shutdown / Ion Shower Mode / Odour and Dust Level Indicator / Child Lock


Weight: 7.9 kg
Size: HD40 –Small rooms
Dimensions: 39.9 x 23 x 61.5 cm; 7.9 Kilograms
Model: UA-HD40U-L
Colour: Light Grey
Manufacture: Sharp
Colour: Light Grey
Size: HD40 –Small rooms

21 Responses

  1. AlexStovall says:

     United Kingdom

    This is my second purchase (UK) Sharpe UA-HD40U-L Air Purifier with Humidification for Small Rooms – Air Flow 216 m3/h. The first purchase was for the larger unit Everything works well and this unit is used 24/7 in the winter and the with the second unit I use the timer function. Very quite on the low setting and will not bother anyones sleep period. Indicator lights can be dimmed or switched off.

    Its very easy to set up and here are some tips for using the unit.

    1. If using 24/7 then i find it beneficial to change the trough which holds the humidifying filter every morning. The water becomes naturally contaminated with filtering out the air flowing through and so I empty the trough every day. In continuous use the larger HD50-UL unit consumes 2 x water dispensing holders per day providing a humidity of 50-55% in the large room on the low setting. 1 x water container in a small room with the HD40 unit when used for 12 hours per day maintaining a humidity of up to 60% based on the low setting.
    2. Expect to utilise 2 x humidifying filters (per unit) over the winter period in the UK. Over time the humidifying filter becomes hard and presents an odour when it requires changing. Changing the humidifying filter takes just two minutes no screws involved just press out the old filter and drop in the new one. If the water runs out the unit will “beep” and a red light can be seen.

    3. The carbon and hepa-filters will last for years so no issues they just need a quick brush with a soft hand brush as does the out plastic filter cover
    The castors make for easy movement on a tiled/hard floor but not a carpeted floor.
    The unit removes cooking smells very well but you need to set a higher flow rate for say 30 mins during/after cooking.
    4. In the summer i don’t require the humidifier because the UK summer has a high natural humidity, so only use the plasma cluster air purification aspect during summer including the pollen removal cycle. Its quite good at removing pollen just remember not to leave the outside patio doors or windows open since this defeats the object of keeping the room free of pollen. Also keep the internal house doors/windows closed when using the unit since the Sharp unit (or any manufacturer alternative) cannot be expected to clean the whole “open” house air.

    5. If you have underfloor heating the room atmosphere tends to dry out as in my case down to 24-30% humidity the Sharp units prevents this from happening.

    It takes 5 mins per day in time to service the unit.

    I would recommend these Sharp units to anyone requiring increased humidification and or cleaner air.

  2. Anonymous says:

     United Kingdom

    I’ve researched brands, and Sharp is the best, especially its ion capabilities that help deter Covid-19 particles. We use Sharp in all our homes, and they never fail us. This is worth it. Make sure to check the size vs the room you intend to use the unit in. This does its effectiveness.

  3. Anonymous says:

     United Kingdom

    My mum has advanced COPD and this machine, whilst not solving her problems, has definitely made things a little more comfortable for her. It clears dust and odours, the fan can be set to high which cools the room faster, the lights on the panel can be toned down or switched off completely so won’t interrupt sleep and when not on the higher fan settings (which it doesn’t need to be), it is whisper quiet so could easily be used in a bedroom. Given all the functions that come with this, it was well worth the money and I’m only sorry it wasn’t purchased sooner. Very very happy with this purchase.

  4. BrentonCamarena says:

     United Kingdom

    This is a compact and elegantly designed air purifier that I have been very impressed with.

    There is no doubt that this unit works well. Even on the lowest setting, the unit does a good job of filtering the air. This unit is unbelievably quiet on the lowest setting. In my bedroom, when it is switched on, I occasionally think I can hear very light rain outside but it is the air purifier. I don’t ever need to put it on a higher setting than the lowest level. It works well!

    Upon cleaning the unit, I found that the pre-filter had trapped most of the dust. The prefilter was easily cleaned by vacumning. The inside filter was remarkably clean. this is in contrast to another air purifier that I have where the internal filter quickly gets clogged up. Having the pre-filter capture most of the larger particles will inevitably lead to a much longer filter life. On this basis, I’m not surprised that the filter is reported to last for 17 500 hours. This is a long time! Obviously the longevity of the filter will depend on the environment it is used in. A simple LED indicator will show when it is time to replace the filter.

    This filter uses filter part number UZ-HG3HF. An internet search has revealed that they are not yet widely available, but are currently available on Amazon at https://www.amazon.co.uk/SHARP-Purifier-Replacement-Particles-UA-PE30U-WB-White/dp/B09F715TYD/ for 35.

    One useful feature is that when powering off the unit at the wall, when the power is restored the unit will come on at the previously used setting. This means that it can be used with smart plugs to switch it on and off. Yes, you will have to manually change the speed if you wish, but it is easy to add an easy form of remote (voice activated) control when combined with Alexa (or your chosen system).

    Unfortunately, there is no display of the air quality, but I’m sure that this would have led to a higher price point.

    If you are looking for a quiet, efficient air purifier that is easily cleaned and has a long lasting filter, I can certainly recommend this unit.

  5. Anonymous says:

     United Kingdom

    Quiet and effective

  6. Anonymous says:

     United Kingdom

    Quiet and effective

  7. CatalinFairbrid says:

     United Kingdom

    Golden Review Award: 9 From Our UsersAlthough I already owned one air purifier, this version seems to be a lot more powerful. If you put it on the maximum setting, it blows a right old gale out of the upper vent. Indeed, it would have been more than enough to blast Marilyn Monroe’s skirt up above waist height. Of course, now that modern women are typically to be found wearing trousers, unfortunately it would only cause such material to ripple gently in the breeze- in a not particularly saucy fashion. However, that’s not the fault of the air purifier. That’s the fault of current day feminism. Anyhow, I’m not sure if it’s especially urgent for a purifier to come with such a powerful fan, but it’s certainly reassuring compared to those which produce only the faintest breeze about the ducts.

    The night mode is described as “library quiet”. It’s certainly gentle enough to sleep to. If anything it’s nice to have a little white noise. You may wish to top it up with a speaker (to play the soothing tones of whale song and wind chimes), but I find the air current alone to be relaxing enough to induce slumber. Although it is indeed quiet enough to be used in a library, however, the device is likely too conspicuous to actually bring for a reading session. In my opinion, the average nosy librarian would quickly spot anyone plugging one in. Most likely they’d be straight over to point out that the electrical sockets are for use by staff only and that security are only one phone call away.

    Anyway, if it’s your own home that you intend to purify then this seems to be a good solid performer.

  8. Anonymous says:

     United Kingdom

    Top notch product. Works fantastic during hot season too, as the humidifier function tend to cool down the room it is in.

  9. Anonymous says:

     United Kingdom

    I have put this air purifier in my bedroom. One of the reasons is that it is white and would stick out like a sore thumb in the lounge. Although it is probably better in the bedroom anyway because on the first night I noticed that when I woke I did not cough nearly as much as normal. It can be set to a quiet mode for sleeping and it didn’t disturb me at all. There maybe a problem with it lighting up the room a bit but it didn’t disturb me and I think it would be easy to tape up or cover any lights that you find a nuisance.
    I am quite impressed with this neat little machine and feel confident that I am breathing cleaner air and that will help my asthma.
    Highly recommended.

  10. Anonymous says:

     United Kingdom

    Golden Review Award: 3 From Our UsersIf all you need is a device to clean the air of dust and pollen then this air purifier should be fine. It’s large size means it would need to go on the floor or on an empty desk or unit, it has 2m of power cable and the instructions state it will work close to walls as long as a few cm of space is left behind it. The attached video gives an idea of the sound, it is very quiet in the low setting andouille easily be left running while you sleep.

    The air is sucked via the filter on the back and projects vertically from the top. The filter consists of a fine plastic mesh which is built into the plastic panel and then a removable HEPA filter. It claims to last upto 10 years, the instructions state 2 years running 24hrs a day, in reality it won’t be run 24/7 so 10 years seems realistic, you can vacuum the back of the filter as stated in the instructions to clean the filter. I’ve had it running for around 20hrs in total now and while the rear does have dust over the pre-filter the HEPA filter looks clean. I cannot confirm how well it cleans the air as I don’t own a device to measure air quality. For allergy sufferers it will be helpful, but won’t clear dust on surfaces, bedding etc so it’s not a substitute for washing, vacuuming the floor or keeping windows shut to keep pollen out.

    Three power settings, and then a quick clean option which basically runs the machine for 1 hour on full. No other settings. At the time of writing this review it was a fraction under 140 which I feel is expensive for what is basically a fan with a filter. It has no digital air quality display, no carbon filter for removing smells, VOC’s, no timer function. It’s a large size and long filter life with whisper quiet low setting are it’s key selling points but personally I feel this should be sub 100 for its lack of functions.

    Ideal for allergy sufferers but quite a basic machine

  11. Anonymous says:

     United Kingdom

    Great Air Purifier. Sits in the corner of my bedroom and very quietly goes about doing its work. I have it on sleep mode mostly but kick it up a notch when necessary. It’s not hugely intrusive and looks absolutely fine where it is. Very happy with it….

  12. AdriannaKir says:

     United Kingdom

    Helped our 3 month old baby a lot!

    Pros:
    When we are cooking it highlights the air quality and works on reducing the odour
    Different fan speed
    Humidifier tank quantity is good and
    Humidifier goes on for longer time
    Ionisation feature helped our little one by keeping the air clean
    cools the room a bit

    Con:
    Price, its a valuable product but cannot comment if it is value for money considering there are others that are cheaper
    Coverage is a bit smaller than highlighted

    Good one and helped our 3 month old baby

  13. A Day Without Me says:

     United Kingdom

    Needs to top up water quite frequently but it is quiet and does the job well

  14. Anonymous says:

     United Kingdom

    Golden Review Award: 3 From Our UsersI use air humidifier to help with my hayfever symptoms.

    I can actually feel a difference with this air purifier, it has a pollen setting which bumps up the baseline fan speed, so you know the air is circulated and any allergens are getting removed.

    The rear vent also helps moving air and creates a circulation which helps clean air.

    Humidifier function seems to work pretty well, while the humidity level is preset and cannot be adjusted, the machine automatically starts humidifying air when RH goes below 60, and stops when it goes above 60.

    With that being said, I prefer slightly dryer air so I don’t use that feature too often.

  15. Anonymous says:

     United Kingdom

    Golden Review Award: 2 From Our UsersBrilliant air purifier , since I’m using him during the night I’m sleeping very hard without waking up at the night. My nose on morning is clear , noise level on 1st level is nearly heard. Also air humidity let you breathe very comfortable. And lot of money in the packet thanks to 10 years life time filters. I can’t say nothing else like highly recommended this product for people who wants to change life comfort.

  16. MathiasChism says:

     United Kingdom

    Golden Review Award: 2 From Our UsersGood unit. Nice build quality. Excellent packaging. Very responsive to environmental conditions. The unit seems to be particularly sensitive to my glasses of wine (alcohol), the gas boiler heating water (some gaseous by-product), flapping of bed sheets (dust), and farts (eugh).

    Love i

  17. Anonymous says:

     United Kingdom

    Golden Review Award: 3 From Our UsersFantastic device. Really quiet, enough so to not disturb sleep. makes your room air fresh and clean, leaving you feeling relaxed and clearheaded. So glad I bought this.

  18. Catalin8895 says:

     United Kingdom

    Golden Review Award: 4 From Our UsersI won’t pretend for one moment to fully understand all the technical specifications and features included in this Sharp UA-HD50U-L Air Purifier. I mean “PLASMACLUSTER ION GENERATOR” sounds cool but it sounds to me like something you would hear on Star Trek – “Captain, we’ve lost power to the PIG engine.”

    What drew my attention to this item was the fact that it claimed to be able to purify the air and being someone who suffers from indoor allergies – I jumped at the chance to reduce my antihistamine use. So while I’ll let you read through the wealth of information and features on this page (very well detailed from Amazon), I will focus on my experience and how well it worked.

    Thankfully despite being feature packed it is easy to use and to understand the various options and settings. There are a lot of buttons on top of the machine, but the instructions keep things simple and clear – it won’t take long to get to grips with. As you would expect for a three-figure price tag, the build quality is high while keeping the weight (empty) pretty light. It came well packaged (a box with packing in another box) to ensure safe arrival (I think most customers have had bad experiences with couriers at one point or another).

    During use there is some noise (which is totally expected) – it is a bit louder than my older dehumidifier which was surprising – but its a better “pitch” and softer sound so it’s actually easier to ignore and get used to. I opted to leave the machine on “intelligent” mode for most of the time. This means the machine automatically monitors the humidity and temperature of adjusts itself as required. It works well to circulate the air in your room with the HEPA filter removing dust and impurities as it does so.

    In a “large” room I think it would struggle to do so effectively but there is a larger size should you have colossal sizes rooms. I took advantage of the dehumidifier function by placing it in a double cupboard with some damp and it performed well.

    While I said that I wouldn’t focus too much on features (as this page does a far better job than I could), I will just mention that I was pleased with the auto shut-off and indicators that displayed both Air quality and the status of the filter. The fact that it switches on and off as required makes day to day use easier and it was pretty cool to be able to monitor the air quality.

    So how did it perform?

    I am glad to report that while not fully understanding “how” it made a definite and noticeable difference to air quality. It removes odours in the air such as dampness but more surprising was its ability to remove cooking smells (I use a lot of garlic and cumin) which keeps my neighbours happy. I’ve used this in all my rooms (excluding my bathroom as it is tiny and taking into account electrical safety) and it does make the indoor air feel, smell and taste cleaner.

    While some people might ask “why not just open a window?” my answer is you can still do that, but this Air Purifier goes further than that – it cleans the air, removing dust and impurities while helping to circulate the around the room. Not only did it help my allergies but it helped me sleep better (maybe its my imagination or maybe it was down to the cleaner air and automatic monitoring of my environment). Overall if you are looking for an Air Purifier unit then this one looks good and works well. It is definitely worth considering.

  19. Anonymous says:

     United Kingdom

    Golden Review Award: 4 From Our UsersThe best thing about this air purifier is there’s a noticeable difference in the air you’re breathing in. It’s a difficult experience to describe but air in the room just feels cleaner and lighter to breathe in and out.

    As someone who lives in the city, it’s very satisfying to get away polluted city and have clean air right inside your own home!

    Overall, I’d recommend this quality product, you can tell it’s well engineered and well made.

  20. Anonymous says:

     United Kingdom

    This air purifier is great and most importantly it works!

    It filters the air making it much cleaner and fresher to breath it. I have had it on for a week and I’m starting to see the difference at home.

    There are layers of filters which really does filter the dirt in the air! Features an advanced technology fan system that circulates the air through many filters.True HEPA and Activated Carbon filters reduce unwanted odors

    This is really handy for someone with breathing difficulties or even someone with hayfever like myself!

  21. ChandraGKTM says:

     United Kingdom

    This air purifier is great and most importantly it works!

    It filters the air making it much cleaner and fresher to breath it. I have had it on for a week and I’m starting to see the difference at home.

    There are layers of filters which really does filter the dirt in the air! Features an advanced technology fan system that circulates the air through many filters.True HEPA and Activated Carbon filters reduce unwanted odors

    This is really handy for someone with breathing difficulties or even someone with hayfever like myself!