EvaChill Review: How Evapolar's Personal Cooler Works, How Cool It Gets and Where to Buy It for Less

Our verdict

Yes, if you want a quiet, low-power personal breeze at a desk or bedside and you live somewhere hot but not humid. EvaChill is Evapolar's evaCHILL personal evaporative cooler: well made, USB-powered and genuinely helpful when you sit close to it. But it cools a person, not a room; humid weather blunts it; "up to 25°F" is a best case; and cartridges cost $29 every few months. It scores 5.4 out of 10, held back by overstated claims, running costs, and a $99 offer price when Evapolar's own store listed it at $72.

The short version

• A small evaporative cooler: a fan blows air through a water-soaked cartridge, cooling and humidifying it.
• 7.5 W over USB, up to 9 hours per tank, under 50 dB, about 6.8 x 6.7 x 6.7 inches and 750 g, according to the brand.
• $99 for one on the offer page on 3 October 2026; $198 for three, $297 for five. Evapolar's store: $72.
• Cartridges last 3 to 6 months and cost $29 each.
• Best trait: quiet, gentle, low-power cooling right where you sit, in dry heat.
• Biggest drawback: it is not air conditioning, and humidity limits how cool it gets.
• Our score: 5.4 out of 10.

Pros & cons

EvaChill is a real product from a real maker, not a generic import. Its limits are the limits of evaporative cooling itself, and the offer page oversells them.

How it works

EvaChill is an evaporative cooler, sometimes called a swamp cooler or air cooler. It has no compressor or refrigerant, which is why it uses so little power.

1. 01

   Fill the tank

   Step 1: Pour water into the tank at the top. Cold water from the fridge gives a cooler start. One tank lasts up to 9 hours, depending on fan speed and how dry the air is.

2. 02

   Water soaks the cartridge

   Step 2: Water wicks into the evaBREEZE cartridge, a mineral fibre material with a large surface area. A small fan pulls room air through the wet cartridge.

3. 03

   Evaporation cools the air

   Step 3: As water evaporates from the cartridge it takes heat from the air passing through, so the air that comes out is cooler and moister. You feel it most when you sit within a few feet of the front.

When water evaporates it absorbs heat, the same reason you feel cold stepping out of a swimming pool on a breezy day. EvaChill speeds this up with a fan and a cartridge designed to hold water over a large surface. The drier the air, the more water evaporates and the cooler the output. In humid air, evaporation slows and the cooling effect shrinks.

A quick guide to humidity and cooling

These are general patterns for evaporative coolers, not test results for evaCHILL. A cheap digital hygrometer tells you which row you are in.

Who it's for

EvaChill suits people who want relief from the heat in one spot: at a desk, by the bed, on the sofa, in a van or a small office. It is particularly appealing to people in dry climates, people who sleep hot or have hot flashes, and anyone who finds air conditioning too cold, too loud, too dry or too expensive.

It is not a way to cool a room, and it is a poor choice in humid climates.

Why EvaChill appeals

Air conditioning is expensive to buy, install and run, and many people only need to cool themselves, not an empty room. A cooler that plugs into a laptop, sits on a desk and costs pennies a day to run is an attractive idea. The gentle, moist breeze also avoids the dry eyes and throat some people get from AC, and the soft blue light and compact design make it look good on a desk.

Who gets the most value

People in hot, dry regions get the most cooling. People who sit still for long periods, at a desk or in bed, get the most benefit because the cooled air reaches them directly. One owner on the page uses it in a small, hot office of about 250 square feet and says it cools the space where she sits, not the whole room.

What it will not do

It will not lower the temperature of a room the way an AC does, dehumidify, or replace proper heat-safety measures in a heatwave. In very hot conditions, especially for older people and those with health conditions, it is not a substitute for a cool room.

A typical day with EvaChill

In the morning you fill the tank with cold water and set it at the corner of your desk, a little to one side so it is not blowing straight into your eyes. On a medium speed you feel a cool, slightly moist breeze on your face and arms. By mid-afternoon the tank is lower, and on a dry day you notice the air near your desk feels fresher than the rest of the room.

At night you move it to your bedside, refill it and run it on low. In the morning you empty the tank so the cartridge can dry while you are out.

It becomes part of a routine, like a desk fan, but with a little more upkeep.

• People in dry or moderately humid climates who want cooler air at a desk, bedside or sofa
• Anyone with hot flashes or who sleeps hot and likes a gentle, quiet breeze
• Renters and people without AC in one room who want a low-power, portable option

Who should skip it

• Anyone expecting to cool a whole room, or a replacement for air conditioning
• People in hot, humid climates, where evaporative cooling works poorly
• Anyone who does not want ongoing cartridge costs or regular cleaning
• People with mould allergies or damp homes, as extra humidity and damp cartridges can make things worse

How much does EvaChill cost, including cartridges?

EvaChill cost $99 for one on the offer page on 3 October 2026, with three for $198 and five for $297, while Evapolar's own store listed the same evaCHILL at $72. Replacement evaBREEZE cartridges cost $29 and last 3 to 6 months, according to the brand. You get the cooler with a cartridge installed and a carry handle; it runs on 7.5 W of USB power for up to 9 hours a tank.

You get the evaCHILL unit with its evaBREEZE cartridge installed and a fold-up carry handle. Evapolar's store lists it in white, grey, green, blue and lavender.

• 

  About 6.8 x 6.7 x 6.7 inches

• 

  The carry handle

Specifications

EvaChill price and bundles

On 3 October 2026 the offer page our link opens showed:

Evapolar's own store listed evaCHILL at $72, with a crossed-out $120, the same day. The page's "retail" price is $119.

What this means for you: for one cooler, the maker's store was $27 cheaper. The offer page's multi-packs are cheaper per unit, but only if you want three or five.

The ongoing cost: cartridges

Evapolar says each evaBREEZE cartridge lasts 3 to 6 months, and its store sells replacements for $29. If you use EvaChill all summer and replace the cartridge twice a year, that adds about $58 a year. Heavy year-round use could mean up to four cartridges, about $116 a year.

Running cost

At 7.5 W, EvaChill uses very little electricity: running it for nine hours uses under 0.07 kWh, about a cent at typical US electricity rates. That part of the page's pitch is fair.

Cost over a summer

Electricity is almost free. The real costs are the unit and the cartridges.

Over three summers, buying at Evapolar's store price and replacing the cartridge twice a summer, the total is about $250. A good desk fan over the same period costs a fraction of that; a window AC costs more upfront and to run, but cools a whole room.

Is $99 good value?

At Evapolar's own $72 store price, evaCHILL is reasonable for a well-made personal cooler. At $99, it is harder to justify, especially with cartridge costs. A Smart Home Hookup review also noted that cheaper personal coolers exist at big-box retailers, though build quality and cartridge design vary.

Who makes it

evaCHILL is made by Evapolar, which sells a range of personal coolers including evaLIGHT plus and evaSMART, plus cartridges and accessories. The page tells the story of founder Eugene Dubovoy, who has a PhD in technical science, developing the evaBREEZE material with help from his father, a materials scientist. The page also mentions a Red Dot Design Award.

The offer page our link opens is a marketing partner's page; Evapolar also sells directly.

Colours and design

Evapolar's store lists evaCHILL in white, grey, green, blue and lavender. It is a compact cube with a fold-up handle and a blue light. Owners on the page describe it as modern and good-looking, and design is clearly part of its appeal compared with plain plastic coolers.

What is in the box

The page and store describe the unit with its cartridge fitted. Check at checkout whether a USB power adapter is included; if not, any reasonable USB wall adapter or a laptop port will run it.

How well does EvaChill work?

EvaChill cools a person sitting close to it, not a room. Evaporative coolers work best in dry heat, as the US Department of Energy notes. Independent test figures reported output air about 8°F cooler than the room at 54% humidity and about 12°F cooler at 44%. Owners describe a cool, slightly moist breeze at a desk or bedside, and less effect in humid weather.

Nobody on our team has used EvaChill. This section draws on the physics of evaporative cooling, hands-on reviews, independent test figures and owner feedback.

What the US Department of Energy says about evaporative cooling

The Department of Energy's guide to evaporative coolers explains that they cool air by passing it over water-saturated pads, and that they are suitable only for areas with low humidity. It notes they use far less energy than refrigerated air conditioning but add moisture and need more maintenance. Those points apply to EvaChill, scaled down to one person.

Independent test results

Search results summarising an independent hands-on test of evaCHILL reported the output air about 4.5°C (8°F) cooler than the room at about 54% relative humidity, and about 6.8°C (12°F) cooler at about 44% humidity. We could not open the full review to confirm the setup. The figures fit the physics: drier air, more cooling.

Evapolar's own help pages, as summarised in search results, describe a maximum temperature decrease of about 10 to 12°C (18 to 22°F) under ideal conditions, lower than the offer page's "up to 25°F".

What a hands-on reviewer found

The Smart Home Hookup reviewed evaCHILL in 2019. The reviewer found it does not cool like a typical air conditioner but makes very hot rooms much more bearable when you sit near it. Downsides included weaker performance in humid climates, the filter staying damp and developing a smell after months of use, and the cost of replacement filters.

Room vs personal cooling

The cooled air mixes with warm room air within a few feet. That is why owners describe feeling cool when they sit in front of it, while the room thermometer barely moves. Place it close, within an arm's length or two, and aim it at your face and upper body.

How long a tank lasts

The brand says up to 9 hours per tank. On high speed, in dry air, water evaporates faster and the tank empties sooner. In humid air, it lasts longer but cools less. Many owners refill once or twice a day.

Is the moist air good or bad for you?

In dry climates, or rooms dried out by air conditioning, the extra moisture can ease dry eyes, skin and throats, as the page says. In already humid homes, more moisture can make the air feel heavy and encourage mould. The right answer depends on your home's humidity, which is why a hygrometer is a useful companion.

Humidity in practice

Every litre of water EvaChill evaporates goes into your room's air. In a dry climate that can be welcome, easing dry skin and eyes. In a humid room, or a small closed room over many hours, it can make the air feel sticky and reduce the cooling effect. Opening a window or door slightly helps by letting moist air out.

Noise and light

The brand says it runs under 50 dB, about the level of a quiet conversation or moderate rainfall. Owners describe it as quiet, and some use it all night. It has blue lighting, which one owner likes; light-sensitive sleepers may want to check whether it can be dimmed or turned off.

Who it helped most in reviews

The clearest wins in owner feedback are people going through menopause, people sleeping in a hot bedroom without AC, and office workers in small, stuffy rooms. In each case they sit close to it for hours, which is exactly how an evaporative personal cooler works best.

Are EvaChill's claims true?

EvaChill's specs are fair, but its headline claims overreach. "Cools the air by up to 25°F" is a best case; independent tests in typical indoor humidity reported drops of a few degrees Celsius. "Cools you down just like AC" is wrong, because AC removes heat and moisture from a whole room, and the page's own testimonials say it does not lower room temperature. "100x more efficient" compares power, not cooling.

"Cools the air by up to 25°F"

A best-case claim. Evaporative cooling depends on how dry the air is. Evapolar's own help pages describe a lower maximum, and independent tests in typical indoor humidity reported drops of a few degrees Celsius.

"Cools you down just like AC"

No. Air conditioning removes heat and moisture from a whole room. EvaChill cools a stream of air and adds moisture. The page's own testimonials say it does not significantly lower room temperature.

"100x more efficient vs traditional AC"

It uses far less power: 7.5 W compared with hundreds or thousands of watts for AC. But it does far less cooling. Comparing power draw alone, without comparing how much heat each removes, makes the efficiency claim misleading.

"Purifies the air"

The cartridge may trap some dust as air passes through it. That is not the same as a HEPA air purifier, and the page gives no filtration figures.

In fact, a wet cartridge that is not kept clean can add smells or microbes to the air, the opposite of purifying. Regular drying and replacement matter more than the purification claim.

"Humidifies naturally — no more dryness"

Accurate: it adds moisture. That is a benefit in dry climates and a drawback in humid ones.

"Patented evaBREEZE technology" and "volcanic nano-membrane fibre"

Evapolar describes its cartridge material in these terms and the page calls it patented. The key point for buyers is that it is a replaceable wick with a large surface area, and it needs replacing every few months.

"Award-winning" and "over 1,000,000 sold"

The page cites a Red Dot Design Award and Product of the Year. These are design and marketing awards rather than performance tests. We could not verify the sales figure.

"Leak-resistant, safe for desk and bedside"

Owners on the page use it at desks and bedsides. Some Trustpilot reviews of Evapolar's larger evaSMART model report leaks from its removable tank; we did not see the same complaint for evaCHILL specifically.

Claims scorecard

Is EvaChill better than a desk fan or an air conditioner?

In dry heat, EvaChill feels cooler than a desk fan because it adds evaporative cooling to the airflow; in humid heat, a good fan may be just as effective and cheaper, with no cartridges. A window or portable air conditioner genuinely cools and dries a room, but costs far more to buy and run. EvaChill is for personal comfort where AC is unavailable or overkill.

• 

  The page's comparison with air conditioning

• 

  Personal cooling at home

EvaChill vs a desk fan

A fan moves air and cools you by speeding evaporation from your skin. It works in any climate, costs less, and has no cartridge. EvaChill adds evaporative cooling to the airflow, so in dry heat it feels cooler than a fan. In humid heat, a good fan may be just as effective and cheaper.

EvaChill vs a portable or window AC

An air conditioner genuinely cools and dries a room. It costs far more to buy and run, is louder, and needs a window vent. If you live somewhere humid, or need a cool room for health reasons, AC is the right tool. EvaChill is for personal comfort where AC is unavailable or overkill.

EvaChill vs a larger evaporative cooler

Bigger evaporative coolers with large tanks can take the edge off a room in dry climates, especially with a window open. They use more power and space. EvaChill is better for a desk or bedside.

EvaChill vs other Evapolar models

Evapolar's store also sells evaLIGHT plus and evaSMART, larger personal coolers at higher prices, with their own cartridges. evaCHILL is the smallest and cheapest, with a handle for portability.

EvaChill vs cheap personal coolers

Many no-name personal coolers look similar and cost less. Build quality, cartridge availability and leak resistance vary widely. Evapolar's advantages are an established brand, available replacement cartridges and a warranty.

EvaChill vs a neck fan or wearable cooler

Neck fans and wearable coolers move air or use small cooling plates right against your skin. They work on the move and in any climate, but can be noisy and need charging. EvaChill stays on a desk or table and gives a broader, gentler breeze.

Other home products we have reviewed

Our home accessories section and home and garden hub cover more products sold through offer pages, including the Aroma Amplifier, the Bed Scrunchie and Campanelli stain remover. For cooler nights in bed, our Miracle Made sheets review covers a sateen set with a cooling-finish option. For the opposite problem in winter, our EcoHeat S review covers a compact 1,200 W ceramic heater and what it costs to run.

If you live somewhere dry and want a personal cooler, compare the price at Evapolar's store with the evaCHILL offer page (opens evaCHILL in a new tab), which is cheaper per unit only on the multi-packs.

Is EvaChill legit, and what should you check before buying?

EvaChill is the evaCHILL from Evapolar, an established brand, but its Trustpilot score is 3.6 from only 28 reviews. Before buying, check your typical summer humidity, because below about 50% it should help noticeably while humid heat blunts it. Compare the $99 offer with Evapolar's own store at $72, budget $29 for each cartridge, and dry the cartridge regularly to prevent smells or mould.

Your climate decides how well it works

Evaporative cooling works best in dry heat.

What to do: check your typical summer humidity. Below about 50% it should help noticeably; in humid heat expect a modest effect and consider a fan or AC instead.

It is personal, not room cooling

The cooled air reaches only a few feet.

What to do: plan to use it within arm's reach at a desk or bedside. Do not buy it to cool a bedroom, living room or office.

Price differences

The offer page charged $99 for one; Evapolar's store listed $72.

What to do: compare both before buying a single unit. The offer page's three- and five-packs are cheaper per cooler if you want several.

Cartridge costs and hygiene

Cartridges last 3 to 6 months and cost $29. Damp cartridges can grow mould or smell, as a hands-on reviewer found.

What to do: empty the tank and let the cartridge dry when you will not use it for a day or more. Replace the cartridge if it smells, discolours or cools less. Budget for one or two a year.

Humidity and health

Extra humidity can encourage mould and dust mites in a damp home.

What to do: if you have mould allergies or asthma triggered by damp, use it with a window ajar, keep sessions shorter, and watch for condensation.

Heatwaves and vulnerable people

A personal cooler is not enough protection in extreme heat for older adults, babies or people with health conditions.

What to do: in a heatwave, follow local health advice: spend time in a properly cooled space, drink water, and check on vulnerable people.

Returns and warranty

The page offers a 30-day money-back guarantee and a 1-year warranty.

What to do: test it in your home within the first days, in the conditions you bought it for, and keep the packaging.

Water and electronics

It holds water next to a USB connection.

What to do: keep it on a flat, stable surface away from laptops, papers and the edge of the desk. Fill it carefully, unplug it before moving or cleaning it, and keep it out of reach of young children.

How to buy EvaChill the smart way

1. Check your climate's humidity, then compare Evapolar's store with the evaCHILL offer page (opens evaCHILL in a new tab).
2. For one cooler, choose the cheaper source on the day.
3. Add a spare cartridge only if you will use it daily for months.
4. Check shipping and the total before you pay.
5. Keep your order confirmation and packaging for the 30-day guarantee.
6. Test it at your desk or bedside in your usual conditions in the first week.
7. Register the 1-year warranty if the seller asks you to.

What do owners say, and how did we score EvaChill?

EvaChill scores 5.4 out of 10: claim accuracy 0.8, build durability 1.3, price competitiveness 0.8, usability 1.5 and owner satisfaction 1.0, each out of 2. Its testimonials are unusually candid: one owner calls it essentially a humidifier that brings real relief from hot flashes but does not lower room temperature. Evapolar's Trustpilot profile shows 3.6 from 28 reviews, split between praise and complaints.

Reviews on the page

The offer page shows several five-star testimonials. A woman going through menopause calls it essentially a humidifier and says it does not significantly lower room temperature, but brings real relief from hot flashes when placed beside her with chilled water. Another owner says it helped her sleep after her air conditioning failed, preferring it to a loud borrowed portable AC. Another uses it in a hot 250-square-foot office and says it cools the space where she sits.

These testimonials are unusually candid about the limits, which makes them more useful than most.

Trustpilot

On 3 October 2026 the Trustpilot profile for evapolar.com showed a TrustScore of 3.6 out of 5 from only 28 reviews: 35% five-star and 36% one-star. Positive reviews praise close-range cooling, design and some fast customer service. Negative reviews mention limited cooling, frequent refilling, leaks from the evaSMART model's tank, app problems, defective units, slow support and high prices. The profile covers all Evapolar products, and the sample is small.

What the reviews agree on

Owners who understand it as personal cooling are happy; those expecting room cooling are disappointed. Humidity and cartridge upkeep come up repeatedly.

Reading cooler reviews

Look for reviews that mention the climate and humidity, how close the reviewer sat, and how long they have owned it. A five-star review from a dry, hot region and a one-star review from a humid coast can both be accurate. Reviews written in the first week rarely mention cartridge smells or wear, which appear after months.

What we would test with an EvaChill in hand

If we test it ourselves, we will measure output air temperature and humidity at several distances in dry and humid conditions, record noise at each speed, time a full tank, check the cartridge after weeks of use, and compare it with a desk fan. We will update this review with the results.

How we scored EvaChill

Every score on the site follows the five criteria on our how we test page.

The score would rise with cooling claims that match Evapolar's own figures and the offer price in line with the maker's store.

What we did, and did not, do

We read the offer page, Evapolar's store data, the Department of Energy's guidance, a hands-on review, independent test figures in search summaries and the Trustpilot profile, all on 3 October 2026. Nobody on our team has used EvaChill, and no figures here come from our own testing.

How to use EvaChill for the best results

Place EvaChill on a stable surface within arm's reach, pointing at your face and upper body. Fill the tank with cool or refrigerated water without overfilling, and power it from a USB wall adapter, laptop or power bank. Start on a higher fan speed to cool down, then lower it for quiet running, and empty the tank so the cartridge can dry when you are not using it.

1. Place it on a stable surface within arm's reach, pointing at your face and upper body.
2. Fill the tank with cool or refrigerated water; do not overfill.
3. Plug it into a USB wall adapter, laptop or power bank.
4. Start on a higher fan speed to cool down, then lower it for quiet running.
5. Leave a window or door slightly open so humid air can escape.
6. Empty the tank and let the cartridge dry if you will not use it for a day or more.
7. Replace the cartridge every 3 to 6 months, or sooner if it smells.

Cold water and ice

Starting with chilled water gives a cooler first hour, as one owner describes. Ice cubes in the tank can add a brief boost, but evaporation, not ice, does most of the work. Check the manual before adding ice, and do not let water overflow.

Hard water

Minerals in hard water build up on the cartridge and shorten its life. Using filtered or distilled water can help the cartridge last longer.

Positioning for the best effect

Raise it to the height of your face and chest if you can, for example on a stack of books on your desk. Angle it slightly so the airflow reaches you without blowing into your eyes. Keep it out of direct sun, which warms the tank.

If two people share a desk or bed, place it between them and use a higher speed, accepting that each person gets less of the cooled air. For two people who both want cooling, two units, one each, works better than one on full power.

At night

Use the lowest fan speed for quiet, and place it so the breeze reaches you without blowing directly into your eyes. If the light bothers you, position it facing away from your line of sight.

In a car or van

USB power means it can run from a car port or power bank. Secure it so it cannot tip over while moving, and never rely on it to keep people or pets safe in a hot parked vehicle.

Cleaning

Follow Evapolar's instructions for cleaning the tank. Wipe the tank and body regularly, keep the cartridge from staying wet when idle, and store it dry at the end of summer.

Getting the most cooling

Use it in the driest part of the day, keep it close, and pair it with other measures: close blinds on sunny windows, avoid heat-producing appliances, and wear light clothing.

Keeping your home cooler without AC

• Block the sun: close blinds or curtains on sun-facing windows during the day.
• Ventilate at night: open windows when outdoor air is cooler, and close them in the morning.
• Reduce heat sources: avoid using ovens and dryers in the hottest hours; switch off unused electronics.
• Use cross-breezes: fans in windows can pull cooler air through the house in the evening.
• Cool yourself: cool showers, damp cloths on the neck and wrists, and plenty of water help more than you might expect.

EvaChill adds a cool spot to these habits; it does not replace them.

What else do people ask about personal coolers?

Most questions are about what personal coolers can do. They cool the air in front of them by evaporation, which helps in dry heat when you sit close, but they do not cool rooms and work poorly in humid weather. An air conditioner uses a refrigerant cycle to remove heat and moisture from a room, while an air cooler evaporates water and adds moisture to cool nearby people.

Do personal air coolers really work?

Yes, within limits. They cool the air in front of them by evaporation, which helps in dry heat when you sit close. They do not cool rooms and work poorly in humid weather.

What is the difference between an air cooler and an air conditioner?

An air conditioner uses a refrigerant cycle to remove heat and moisture from a room, venting heat outside. An air cooler evaporates water to cool a stream of air and adds moisture. ACs cool rooms; coolers cool people nearby.

Do evaporative coolers work in humid climates?

Not well. When the air is already humid, less water evaporates, so less cooling happens, and the cooler adds more humidity.

Is it safe to sleep with an evaporative cooler on?

Generally yes, on a low setting, if the room has some ventilation and the cartridge is kept clean. Avoid it if damp air triggers allergies or asthma.

Can an evaporative cooler cause mould?

It can if used in a closed, damp room for long periods, or if the cartridge stays wet and dirty. Ventilate the room and dry and replace cartridges as directed.

How much electricity does a USB cooler use?

Very little. At 7.5 W, nine hours uses about 0.07 kWh, a small fraction of what an AC uses.

Can I use EvaChill as a humidifier in winter?

It will add moisture with the fan running, but it will also cool the air, which you may not want in winter. A dedicated humidifier is better for dry winter air.

Can EvaChill help with hot flashes?

Several owners say it helps, including one on the offer page. A gentle, cool, moist breeze at close range can make hot flashes more bearable. It does not treat the cause; if hot flashes are disrupting your sleep or daily life, talk to a doctor about options.

Is EvaChill safe for pets?

The page shows a cat that likes sitting in front of one. Keep the unit stable so it cannot be knocked over, keep cables out of reach of chewers, and make sure pets always have access to water and shade in hot weather. A personal cooler is not enough to protect pets in extreme heat.

What should I do at the end of summer?

Empty the tank, let the unit and cartridge dry completely, and store it somewhere dry and dust-free. Before using it next summer, check the cartridge for smells or discolouration and replace it if needed.

Can I add essential oils?

Evapolar sells an evaAROMA accessory for its coolers. Do not add oils to the tank unless the manual says it is safe, as they can damage the cartridge and some oils are harmful to pets.

What humidity is ideal indoors?

Many health and building guides suggest roughly 30% to 50% relative humidity indoors. Above about 60%, mould and dust mites become more likely.

Is EvaChill worth it?

If you live somewhere dry, sit in one place for hours and dislike air conditioning, evaCHILL can make hot days much more comfortable for very little electricity. Buy it at the lower of the two prices you find, budget for cartridges, and keep it clean. If you live somewhere humid or need to cool a room, put the money towards a good fan or an air conditioner instead.

Does EvaChill need a special power adapter?

No. It runs from USB, so a standard USB wall adapter, a laptop port or a power bank works, according to the page. A higher-quality adapter avoids voltage drops that can slow the fan.

Frequently asked questions