There is a plethora of uncontrollable smokes that contaminate the air we inhale, putting our health in danger. While you cannot take any real action regarding air quality outdoors, what you can do is ensure a healthy habitat indoors. In households where allergy or asthma sufferers live, it’s all the more important to focus on air quality as it presents a direct threat to their well-being. This is where humidification devices that specialize in soothing the symptoms of these health issues come into play, ensuring the air indoors is free of allergens and other pollutants.
1. Levoit LV600HH
Perfect for any room or space you could think of due to its impressive 753 square feet area coverage, the LV600HH is a smart acquisition from all points of view. It caters to the needs of people who suffer from asthma or allergies due to the fact that it provides warm mist which basically ensures no bacteria or microorganisms will be released into the air due to the high temperatures used in the process.
As it can release cool mist as well – it all depends on what you prefer and choose – it can make the atmosphere inside the room more pleasant when the hot summer days come, in addition to tending to moisture increase. The 1.5-gallon capacity of the tank ensures that it will provide up to 36 hours of runtime before refilling is needed. It outputs 500 milliliters of warm mist per hour and 300 milliliters of cool mist, so you can rest assured knowing that it will regulate humidity levels in no time.
It even features an aroma box where you can add essential oils to benefit from relaxing aromatherapy sessions whenever you feel like it. The built-in humidity sensor that it features displays moisture levels in real-time to keep you aware of your surroundings, while the LED screen ensures clear visuals. When it comes to backing, the manufacturing company ensures you won’t have to worry about repair costs for the first 2 years after you purchase it.
What We Like
- Outputs 500 ml warm mist/hour and 300 ml cool mist/hour
- Aroma box lets you benefit from aromatherapy
- Humidity sensor ensures it will display accurate moisture levels in real time
What We Dislike
- Not the cheapest purchase you could make
- Some customers reported a drop in performance with the passing of time
There are no actual downsides to this purchase, something you have already concluded on your own after reading our review. Able to cover wide areas and letting you pick if you want to enhance moisture indoors with cool or warm mist, it makes for the perfect purchase for asthma and allergy sufferers.
2. Air Innovations MH-701BA
What makes it perfect for those who suffer from asthma and allergies, you ask? Well, it’s the antimicrobial design of the tank, evidently, as it ensures germs and bacteria won’t harbor in the water which is used for the humidification process. Design-wise, it is one of the most appealing entries on the market yet as it not only comes in 4 daring and stylish color options which include black, platinum, red, and purple, but because it occupies little space due to its thin tower-like design.
When the 1.5-gallon tank it comes with is filled and if a low level of mist output is selected, it can run for a staggering 90 hours without interruption until refilling will be needed. Speaking of, there are 5 mist settings that you can pick from, so you will always be able to customize its operation to your precise needs. The rotating design of the mist nozzle allows you to direct the moisture where you feel it is needed the most.
There’s even a 15-inch extension nozzle included if you want the mist to be outputted at a higher level. It covers areas of up to 600 square feet, and the remote control included with it offers a truly convenient operation. Furthermore, it features a built-in aromatherapy tray for those interested in adding scents to create a more soothing environment indoors.
What We Like
- The antimicrobial tank and base ensure bacteria won’t harbor in the water used for the mist release process
- Rotating nozzle allows you to direct the mist anywhere you like
- 5 mist settings to pick between
What We Dislike
- Cleaning the extension tube can be quite tricky
- Some customers complained that it did not meet their quality expectations
Available in 4 stylish color options and at a more than reasonable price, the Air Innovations entry is among our favorites yet.
3. Everlasting Comfort Ultrasonic
The large 1.6-gallon capacity of the Everlasting Comfort humidifier ensures that you won’t have much trouble with routine work as refilling isn’t required all that often. As a matter of fact, it can run for up to 50 hours straight between refills if you set it on a lower mist release setting. Speaking of, to adjust mist output to your preference, you simply have to turn the knob control until the desired level is reached. It relies on the ultrasonic technology to release cool mist into the air, and it remains ultra-quiet when it runs so that you can place it in any room or space you desire as it won’t present a distraction. The high moisture output of 270 milliliters per hour ensures it won’t take long until humidity levels rise to healthy levels as of the moment you start using it.
Seeing how it is recommended for spaces of up to 400 square feet, you can basically use it in any room without worrying it won’t handle covering it. The 360-degree rotating nozzle it features ensures moisture will be evenly spread our throughout the room so that no area is left with dry air. Due to the fact that it features an antibacterial natural ionizer, the moisture it releases is sure to be free of germs and harmful particles.
It features a tray where you can add essential oils to bathe the room in pleasant smells and relax unlike ever before. Another noteworthy feature is the blue LED nightlight that provides a soothing light to ease you to sleep. In terms of backing, the manufacturer has it covered for 2 years, so you can rest assured knowing that it will be fixed free of charge if needed.
What We Like
- Features an essential oil tray where you can add your favorite oils for ultimate relaxation
- Its 360-degree rotating nozzle ensures even spread of the moisture throughout the room
- Blue LED nightlight creates a soothing ambiance to help you fall asleep faster
The ultrasonic technology it uses ensures it effectively releases cold mist into the air to spruce up moisture levels. Suitable for large spaces of up to 400 square feet, able to run continuously for up to 50 hours on a fill, and as feature-rich as it can get, the Everlasting Comfort is the smartest pick you could go for.
4. Homedics UHE-WM70
Due to the fact that it uses the ultrasonic technology to turn the water into moisture and normalize humidity levels indoors, you are ensured of a healthy and safe habitat where bacteria and impurities won’t linger in the air. One of the best features of this machine is the fact that it outputs cold, as well as warm mist, so you can have your pick depending on your personal preference. The moisture output speed is customizable as well, which is another plus seeing how you have full control over its operation.
It features a 1.7-gallon tank that will require refilling quite rarely, more precisely once every 80 hours if you run it only when you sleep and set it on the lowest output setting. It can cover areas and spaces of up to 400 square feet. The nightlight it features can be turned on or off as you like in order to create a soothing ambiance in the room you place it in. it comes with 2 demineralization cartridges that help improve the quality and purity of the moisture it outputs. Furthermore, there is a 1-year warranty provided against defects by the company that manufactured it.
What We Like
- When the 1.7-gallon tank is filled, it provides up to 80 hours of runtime
- Ultrasonic technology ensures the tank and the water released by it are free of impurities and germs
- Nightlight features ensures a soothing ambiance in the room that you place it in
What We Dislike
- Comes at a higher price when compared to our other entries
- Releases ‘white dust’ into the air
Although it isn’t the cheapest acquisition you could make, seeing how it uses the ultrasonic technology to ensure a safe and healthy moisture output so that your health issues won’t act up anymore, it is safe to say that this is an acquisition worth making.
5. MistAire XL
An ultrasonic machine that outputs cool mist in order to safely moisturize the air indoors and make it safe to breathe even for those who suffer from dreaded allergies or asthma, the MistAire is the best pick you could opt for by far, performance-wise, as well as price-wise. In addition to boasting an unparalleled efficiency in moisture level increase, the ultrasonic technology it utilizes breaks down the water before releasing it into the air, eliminating toxic chemicals, germs, bacteria, and impurities during this process.
As it features a variable mist control knob, it allows you to select the comfort level that best suits your needs, and thus customize moisture output as you want. On average, it releases approximately 250 milliliters of mist per hour, so humidity levels are bound to rise rapidly if you use it. Seeing how the water tank boasts a 1-gallon or 3.7-liter capacity, you won’t need to refill it all that often, but rather only once every 10 to 24 hours, depending on the speed setting you select.
What we appreciate when it comes to its specs is the fact that it can cover large areas of up to 500 square feet, making for an ideal pick in a medium or large-sized room. This means that it works just as great for the office as it does for the bedroom or living room, providing you with relief from asthma and allergy symptoms so that you may breathe healthily. Combined with the compact and lightweight design it boasts, you won’t have any trouble moving it from room to room as needed to enjoy its performance to its fullest.
Mention Worthy Details
- Features a nightlight that you can activate to create a soothing ambiance in the bedroom – pick between red, blue, and green.
- Delivers an incredibly quiet operation that makes it suitable even for the nursery.
- Compact design – measures 7.5 inches by 10 inches by 12.5 inches.
One of its most spectacular features is the fact that it includes single, as well as dual nozzles in order to allow a truly full customization of its operation. You get to choose the direction of the mist flow as a 360-degree nozzle rotation is put at your disposal. Thus, you can rotate and direct it as needed to get the most out of the humidifier.
What We Like
- Allows full customization of its operation
- Dual nozzle design allows you to direct the mist wherever you want
- Nightlight feature provides a soothing ambiance in the room
What We Dislike
- Only provides cool mist – other products allow you to choose between cool and warm mist
- Some customers complained that they find the refilling process to be too big of a hassle
Even though it comes at a reasonably cheap price, this is your go-to solution if you don’t want your asthma or allergies to act up. The technology it uses ensures a thorough purification of the mist released into the air so that your health issues won’t act up, while its wide area coverage make it ideal for any space you intend to place it in.
6. Air Innovations MH-505-BLUE
The ultrasonic technology it utilizes, as aforementioned, making the indoors habitat truly safe and healthy to be in even for those who suffer from certain health issues. What makes it stand out from its competitors is the fact that this cool mist machine is able to run continuously for 70 hours on a full tank if you set it on the lowest of the 4 speed settings it puts at your disposal. If you don’t run it continuously but rather only when you sleep, for example, it means that the tank will require refilling only once every 9 days.
This isn’t the only convenient aspect to be enjoyed with it as it even produces a low amount of noise when it operates, meaning that you can confidently place it in the nursery without worrying it might disturb the sleep session of your baby/toddler. The water tank it features boasts an anti-microbial construction that further enhances its air quality improving capabilities and safety in use.
As it can cover up to 400 square feet, you are not limited when it comes to the room/rooms you can place it in. Additionally, it features a 360-degree rotating mist nozzle that enables you to pick the direction in which the mist goes when it is released, thus ensuring you can focus on problematic areas of the room first.
What We Like
- Features a 360-degree rotating nozzle that allows you to pick the direction in which the mist is outputted
- Tank needs to be refilled only once every 9 days if you set it on the lowest speed setting
- Puts 4 mist settings at your disposal to select between
What We Dislike
- Some customers were bothered by the fact that it needed to be cleaned quite often
- Flimsy design
Seeing how its only flaw is that it needs occasional cleaning like all machines do for that matter, it’s safe to say that this is a selection you won’t regret making. It provides a generous area coverage and allows you to fully customize its operation as there are 4 mist output settings to pick between, so you are sure to use it successfully.
7. Levoit Dual 100
As the name cleverly suggests, this model does more than simply provide humidification as, with the addition of essential oils, it can even work as a diffuser and create a truly relaxing ambiance in the room it’s placed in. It provides optimal performance in rooms and spaces of up to 260 square feet, which combined with the low 28 decibels it produces when it runs, make the Levoit Dual 100 ideal even for the bedroom or nursery.
The 0.48-gallon capacity tank is rather small in size as opposed to what other products feature, but the Dual 100 is smaller as a whole compared to most of its competitors, so there is an upside to its design as you can place it on a cluttered nightstand due to its small footprint. When set on the lowest of its 3 speed settings, it can run continuously for up to 20 hours, so expect to refill it more often than you would a more expensive model.
As it uses the spiral air duct technology, it releases mist that is so fine into the air and does so throughout a large area quickly that it doesn’t wet the floor or create any fogginess. It boasts a top-fill design – just remove the lid, add cool water into the tank, and you are good to go. Moreover, it is backed by a 2-year warranty against defects, so you don’t have to spend money out of your own pocket when functional issues arise.
What We Like
- Can be used as both a humidifier and diffuser
- produces less than 28 decibels when it runs
- Sleep mode turns off all lights to save power and create a suitable habitat for you during your nocturnal slumber
What We Dislike
- Runtime on full tank isn’t as high as it is with other products
- If you don’t use distilled water with it, white dust can settle on the furniture
Why simply benefit from moisture increase when you can create a more relaxing environment indoors with the addition of essential oils? The Levoit Dual 100 gives you the best of both worlds as it can be used both as a humidifier and diffuser, despite the cheap price being surprisingly useful.
8. Honeywell HUL520W
Another cool mist machine that uses the ultrasonic technology to ensure the air you breathe is free of impurities and allergens, the Honeywell is our favorite pick, by far. Budget-friendly yet highly effective, it delivers an impressive area coverage of up to 400 square feet, which means that it is perfect for the office or bedroom. The ultra-quiet operation ensures you are likely to forget that it is turned on, while the automatic shut-off feature it comes with enhances safety in use as it prevents overheating by stopping its operation when the tank is empty.
It might not feature the largest tank out there as it only has a 0.5-gallon capacity, but this isn’t a big issue considering that it can run continuously for up to 20 hours on a filling. It puts variable speed settings at your disposal so that you may customize its operation as you see fit. It comes in 3 color options to pick between, including white, red, and blue. As it measures only 8.5 inches by 8.5 inches by 9.5 inches, you won’t have trouble fitting it on the nightstand or wherever you like. Furthermore, the manufacturing company backs it with a 2-year warranty against defects.
What We Like
- Features a large tank opening that makes it easy to refill the reservoir when needed
- Comes at a reasonable price that makes it an affordable selection
- Ultra-quiet operation makes it ideal for use in the nursery
What We Dislike
- Not the most impressive water tank capacity out there
- Some customers complained that it produces a bothersome noise when it runs
Another entry that comes at a great price yet doesn’t sacrifice quality or features is the Honeywell, a device that we have grown to love as it proved highly effective in creating a soothing ambiance indoors during our testing trials.
9. Pallas PL-F500
The Pallas is one of the more stylish entries on the market, and it boasts a compact size that recommends it even for use in the office or bedroom where space is necessary, measuring only 8.19 inches in diameter by 12.4 inches in height. It comes with a 1.3-gallon capacity tank that can go a long time without requiring you to refill it. When used on the highest mist output setting in a 300 square feet room, it takes 20 hours for the water in the tank to empty, while in a 100 square feet room, if it is set on the low moisture release setting, it can run without interruption for up to 90 hours. It is rated to consume only 25 watts when it runs, so energy efficiency isn’t an issue to worry about.
It features an activated carbon cotton filter cartridge that eliminates microorganisms and negative ions from the water before turning it into mist and releasing it. As it features a 360-degree rotating nozzle, the same amount of moisture is evenly spread throughout the room for perfect coverage. It is able to release up to 320 milliliters of moisture per hour into the air, which means that humidity level normalization won’t take long at all. However, it’s the note we end on that is sure to impress you the most as the PL-F500 is covered against defects in parts and labor for a lifetime, so you benefit from free repairs or replacements whenever needed without any constraints.
What We Like
- Consumes only 25 watts when it runs
- Features a 360-degree nozzle that ensures even spreading of the mist throughout the room
- Can output up to 320 milliliters of mist per hour into the air
It runs extremely silent, so you can use it in any room you desire, and due to the fact that it can be set to release a staggering 320 milliliters of moisture per hour into the air, it is sure to fix low humidity related issues in no time.
10. Vicks V745A
A warm mist humidifier that eliminates up to 95% of bacteria found in the water before releasing it into the air as mist in order to ensure a healthy environment for you to be in, the V745A is a selection worth looking into. It features a 1-gallon tank that, when filled and the lowest speed setting is selected, provides up to 12 hours of continuous runtime. In terms of area coverage, it doesn’t do as well as our other entries as it only covers 200 square feet, but it shouldn’t necessarily be a problem as the room you need to use it in might not be larger than this.
The translucent tank helps you more easily see when it needs to be refilled, while the automatic shut-off ensures that overheating won’t occur as it shuts the device off in case it runs out of water. There are 2 mist output settings you can pick between to customize its operation, and regardless of what setting you pick, it maintains a whisper-quiet operation. What’s even greater is the fact that you can add medicine into the cup that it features in order to relieve throat and bronchial irritations that come along with a cold.
What We Like
- It puts 2 mist output settings at your disposal
- Features a medicine cup that you can take advantage of to relieve symptoms associated with a cold
- Translucent design of the tank allows you to easily see when it needs to be refilled
What We Dislike
- Smaller runtime than other machines when the tank is filled
- Some customers reported tank leaks
Although there is a downside to it, more precisely the fact that it provides an inferior runtime when compared to other machines, it delivers a sufficiently high warm mist output to ensure that humidity levels will be in check and that your allergies and asthma won’t act up as the moisture delivered will be free of impurities and bacteria.
11. Serene Life PSLHUM60
If you want a cheap and effective product that will help maintain stable humidity levels indoors, one that is suitable for use in households where allergy and asthma sufferers live, this Serene Life entry is what you should go for as it purifies the water of any and all allergens before releasing it into the air. You can adjust the cool mist output as you desire with the simple turn of the knob. The water container boasts a generous 4.1-liter capacity so that you won’t have to refill it too often. When it does empty, the device automatically shuts off to prevent overheating while a red indicator light activates to let you know your attendance is required.
Its ultra-quiet operation is definitely one of the most pleasing aspects as it allows you to even place it in the bedroom without worrying it might present a nuisance while you sleep. As the power cord measures a hefty 5 feet in length, there will be no need for extension cords with it. in terms of design, it measures only 6.7 inches by 6.7 inches by 11.2 inches, so it won’t take up much space no matter where you decide to place it. Additionally, a 1-year warranty is provided by the company which manufactures it.
What We Like
- Convenient LED low water level indicator
- Features a 5-foot long power cord for placement convenience
- Rotary knob and one-button control for ease of use
What We Dislike
- Short warranty
- If it is not kept high off the ground, water patches might appear on the floor
A product that is sure to fit all of your needs and that is especially friendly with people who suffer from asthma and allergies as it purifies the water before releasing it into the air to ensure that you won’t inhale any contaminants, it was bound to be one of our top recommendations.
Rating Criteria Explained
|Rating Criteria||Importance||Product to Receive the Best Score|
|Area coverage||The size of the area that the moisture releasing device can cover is one of the pivotal elements to look into when you make the purchase as you want to make sure that it can cover the space you intend to place it in. we gave a higher rating to the model that covers a bigger area as it can be utilized in large spaces, which is the recommended choice to opt for as you are likely to need to move the device from one room to another, thus making sure that it can handle any task you throw its way.||MistAire XL|
|Tank capacity||The amount of water that can fit into the tank shows how often you will need to refill it. This is a convenience aspect worth looking into as you wouldn’t want to end up needing to refill the machine 2-3 times per day only to maintain proper humidity levels indoors.||Air Innovations MH-505-BLUE|
|Runtime||The runtime represents the amount of time that it can run continuously when the tank is filled. Obviously, the bigger the better as it indicates that you will only tend to maintenance work rarely instead of having to check up on the machine too often.||Homedics UHE-WM70|
|Automatic shut-off||When you remove the water tank or when it runs dangerously low on water, the automatic shutoff feature comes in and saves the day by turning it off in order to prevent overheating. No matter how attentive you view yourself as being, it is inevitable for the machine to run low on water at one point and for you to not see this happening, moment when it could be irreparably damaged if this feature isn’t present.||MistAire XL, Honeywell HUL520W, Air Innovations MH-505-BLUE, Vicks V745A, Homedics UHE-WM70|
|Cool and warm mist output||Cool mist, as well as warm mist, do a great job at raising humidity levels indoors in a safe and healthy way. However, machines that allow you to pick the type of moisture they output are more desirable as they allow a higher degree of comfort. Thus, when you feel like you want the room to feel a bit colder, you opt for cool mist, and if you feel comfier with warmth, you pick warm mist.||Homedics UHE-WM70|
|360-degree nozzle rotation||A full rotation of the nozzle it features is highly desirable as it shows that you can manipulate the direction in which the mist is outputted to your liking. This means that you can focus the moisture output in a specific zone of the room where you need it most, like towards the bed or the crib.||MistAire XL, Air Innovations MH-505-BLUE|
|Nightlight||As it provides a soothing atmosphere in the room, the nightlight feature is a desirable one to look into, especially for those who intend to place the machine in the nursery or bedroom. This features doesn’t affect the performance quality of the machine, but it makes a huge difference when it comes to its overall appeal.||MistAire XL, Homedics UHE-WM70|
Control Symptoms through Proper Maintenance
For the humidifier to actually benefit an asthmatic or allergy suffering individual, it must be properly maintained. Otherwise, it will become a growing ground for bacteria, viruses, and even mold. As you are already susceptible to breathing problems, the release of contaminated moisture into the air decays your state of health, instead of helping alleviate your symptoms the system actually worsening them. Here are the guidelines you must remember at all costs if you want to prevent air pollution but rather promote healthy breathing indoors:
- Use clean, contaminant-free water: The quickest way to damage the device, as well as release contaminants into the air is to will the tank with tainted water. What you should do is add distilled or purified water that won’t leave damaging residues behind and that won’t release any health-threatening impurities into the air in the form of mist either.
- Don’t crank up too much: You might be tempted to overuse your newly acquired device, but this doesn’t mean that there aren’t any limits that you should follow. A common mistake of asthmatics and allergy sufferers is that, in their desire to normalize indoor humidity levels and create a safe habitat, they crank up the mist output volume too much. You should rely on a hygrometer or humidistat to determine what are the moisture levels indoors at all times, making sure that you don’t pass the 55-60% mark as this implies the creation of an ideal habitat for mold and mildew.
- Keep it clean: Water shouldn’t sit in the reservoir for longer than a day or it will get stale, bacteria will develop in it, and inevitably that bacteria will be released into the air where you will inhale it. As you suffer from breathing conditions already, the last thing you need is for contaminants to trigger your health issues as soon as you enter the door.
✔”Provides a nice stream of mist, it’s quite delightful.” – Tyler T.
✔”It has a huge water reservoir, I rarely refill it.” – Dwayne L.
✔”I saw positive changes with my breathing since I use it.” – Alex D.
✔”It’s a nice size, not as big as it looks in the pictures.” – Anabelle C.
✔”Skin doesn’t feel dry and itchy anymore.” – Leo C.
✘”Refilling engineering isn’t that great.” – Karen B.
✘”There’s no handle on the tank, it’s pretty inconvenient.” – Craig J.
✔”Had it a few months now, it never leaked water.” – Julia P.
✔”Works wonderfully, it helped with my chronic sinusitis.” – Hannah V.
✔”Dependable even after a whole year of use.” – Yun G.
✔”Probably the best price to quality ratio.” – Dianne P.
✔”I love the large opening on the tank, lets me refill it easily.” – Samuel W.
✘”Sometimes it gets a bit too noisy.” – Dean S.
✘”Gets moldy quick if you don’t clean it regularly.” – Jack J.
Air Innovations MH-505-BLUE
✔”Works like a charm, I really like the timer.” – Paul R.
✔”It’s perfect for small spaces.” – Elijah M.
✔”It made a big difference, now I sleep more comfortably than ever.” – Chris R.
✔”Stops working when humidity reaches the level I selected.” – Tony P.
✔”Looks nice and stays quiet.” – Jessica A.
✘”It grows mildew fast if you don’t clean it.” – Michael O.
✔”Inexpensive purchase considering what it offers.” – Sharon T.
✔”I use it daily during winter, really makes a big difference in air quality.” – Leanne M.
✔”Easy fill and clean design.” – Christina B.
✔”Ran up to 9 hours on the highest setting, more than what my other humidifiers ever provided.” – Justin F.
✔”Love the automatic shut off, frees my mind of worries.” – Jamie N.
✘”A bit too pretentious when it comes to cleaning and maintenance.” – Alexa W.
✘”Started leaking a bit after the first year of use.” – Ashleigh C.
✔”Holds a lot of water, I don’t refill it often.” – Deena F.
✔”Great product and customer service.” – Olivia M.
✔”Does its job well and stays quiet.” – Blake P.
✔”Nice and sturdy design.” – Patty G.
✔”Works exactly as the manufacturer description states!” – Becky V.
✘”Puts out a lot of white dust.” – Stacey L.
✘”Started leaking after a few months.” – Kevin D.
As an asthmatic or allergy sufferer, the quality of your life is greatly decreased if the environment where you spend most of your time, your home, doesn’t provide proper living conditions. A major role is played by indoor humidity levels, evidently, and during the dry winter months when everyone seems to catch the flu, asthma attacks worsen, and allergies and flourishing, using a humidifier is a necessity rather than a luxury.
The MistAire XL provides all the comfort you need to pass through the dry months of the year without symptoms acting up, producing up to 250 milliliters of soothing mist per hour so that humidity rapidly raises when needed and is properly kept in check.
An equally great option would be the Honeywell HUL520W that releases pleasant cool moisture into the air to keep you safe and healthy. Feature-rich and ultra-quiet, it might require refilling often if low humidity levels are a major issue in the room you place it in, yet this isn’t an issue considering how rapid it normalizes moisture indoors.
If you are searching for a more budget-smart selection, we recommend the Vicks V745A that not only comes at a great price but provides up to 12 hours of runtime on a full tank, meaning that you can rest peacefully knowing that you won’t wake up in the middle of the night with asthma or allergy attack caused by dry air.