Ventless Portable Air Conditioner

Do you want to keep cool in summer without running expensive air conditioning?

Get an economical ventless portable air conditioner, no vent required (also known as a swamp cooler, desert cooler, evaporative cooler or wet air cooler).

ventless portable air conditionerIt is a free standing air cooling device with no exhaust vent hose needed and it can save money now on running costs.

Vent Free Evaporative Air Coolers

If you just found this page, you're in for some interesting reading, as this is the focus of this website.

Staying cool in hot weather indoors is not just a convenience, it's a necessity in certain climates!

In Search of Affordable Cooling

In the past, the only effective way to chill the interior atmosphere to make it comfortable enough to live in was to employ a power hungry heating, ventilation and air conditioning (HVAC) monster. It cost a fortune to operate but provided the much needed respite from the searing heat outside.

portable air conditioner no vent requiredOrdinary fans are OK but they only push hot air around the room, they don't actually chill it in any way.

You feel cooler in the breeze they create because the moving air evaporates the sweat on your skin, creating a drop in temperature as the sweat is evaporated.

Swamp coolers work in a similar way, with the big difference that they pass moving air through a moist membrane, evaporating the moisture. That creates cold air that really does reduce the ambient temperature in a room; in some cases by as much as 30 degrees!

The amazing thing about this type of air cooling solution is that it does it extremely cheaply when compared to regular air conditioners, either movable or fixed installations. The running costs are so much lower thanks to there being no motorized air chilling, compressor refrigerant system (and the power needed to run it) as with regular aircon.

And the other big attraction of swamp coolers is there's no need to vent to the outside!

So here we have an extremely economical, highly portable and ventless air cooling solution that is powerful, quiet to run and environmentally friendly. As long as you have low humidity levels where you live or work, you can enjoy the benefits of this type of climate control solution for those months of the year that get really hot and you need to be comfortable!

Note: As a Sylvane affiliate I earn from qualifying purchases.

FEATURED VENTLESS COOLER FOR 2020 - Honeywell CS10XE Evaporative Cooler

Honeywell CS10XE

best vent free portable air conditioner on sale

Click: View it at Sylvane

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Here is a great low cost cooler that has attracted a lot of positive feedback from well over a thousand verified purchasers. You can get one online from Sylvane today by clicking the image to the left.

It's super economical to run, very quiet yet has a high output that can cool a room of up to 175 sq ft by 25 degrees or more.

Its 2.6 gall tank is big enough to keep the unit running for several hours before needing a refill. Yet it's light enough (18.5lbs) to make it extremely portable and easy to wheel around from room to room.

Remember, this amazing cooler does NOT need an exhaust hose to vent hot air because it doesn't produce any hot air. It's exactly what you wanted when you found this page!


LIMITED OFFER: Available NOW while stocks last. Order yours by clicking the image above left NOW!

Best Ventless Portable Air Conditioner Models

Perhaps you're considering getting one of these amazing mobile ductless room coolers for yourself but you're not sure which might be the best model for your needs.

There are many different models from several different manufacturers, so when faced with a choice it can get tough to know which will suit your individual circumstances the best.

In fact, that's where this site can really help you. I have included several individual product reviews as well as comparison articles so you can see which model has the best benefits you're most interested in.

Add to that the kind of power output you will need and then average costs for purchase and running. There is a lot here but that's exactly what you need to make an informed decision on which is the best one for you.

By way of a spoiler, I'm also listing my next two top swamp cooler models that are best for general use in regular size rooms or outdoors. You can click the image of the cooler you like best if you want to visit the page at Sylvane where you can buy it:

Note: As a Sylvane affiliate I earn from qualifying purchases.

DeLonghi EV250 Portable Evaporative Cooler

Here is a compact portable evaporative cooler that not only does an anazing job of blasting out chilled air to cool you down, it looks stunningly good too!

The DeLonghi EV250 Evaporative Cooler is a great cooler for a medium size room. It's easily portable and provides a good 200 CFM (cubic feet per minute) of airflow to cool a space up to 450 sq ft. It's ideal for using both indoor or outdoor on a deck, patio, pool-side or porch.

As well as keeping you cool, its built-in ionizer works hard to transform warm, stale air into cool, fresh, clean air, perfect for yourhealth and well-being.

It has a removable, easy-fill 1.2-gallon water tank to provide around 6 hours of continuous operation. It also comes with an ice box to fill with water and freeze, ready to place in the water tank for faster cooling.

With a programmable auto-off feature that shuts down the unit anytime up to 24 hours, a remote control, dust filter for cleaner, fresher air and a removable, washable cooling pad, this cooler has all the features you would want in a high end cooler that uses a frugal max 60 watts of power and emits only 53 dB of sound.

Click the image above right to visit the product page at Sylvane, the top electrical appliance superstore online for details of how to buy this great looking cooler.

Whirlpool WPEC12RMT 155 CFM Indoor Evaporative Air Cooler

This is a slightly less powerful cooler than the one above, but it can still quickly cool a room up to 309 sq ft with this top quality portable swamp cooler.

The Whirlpool brand is well known and much loved as a name you can trust to provide quality appliances, especially in the refrigeration and cooling department. This very affordable and very economical to run cooler is one such appliance from this company.

It has an integrated 1.45-gallon water tank that enables long continuous cooling. With an airflow output rated at 155 CFM and the facility to add ice or an ice pack to the tank that will give additional cooling power, it's easy to see how this cooler can do a great job of cooling down your space.

It has an easy-to-read front LED panel for programming functions such as the sleep timer, louver adjustment, fan speed and temperature setting. The convenient remote control makes it just as easy to perform all thsoe functions from a comfy armchair if you prefer!

Click the image above right for details and to visit the product page at Sylvane where you can buy this popular Whirlpool cooler.

Let's look at how these devices work and what makes them tick.

How A Swamp Cooler Works

Here is a short explanation of how this type of cooling device works. By exploiting water's surprisingly large enthalpy of vaporization, these devices are capable of dropping the temperature of dry air significantly through what is known as the phase transition of liquid water into water vapor, or simply put, evaporation.how does a portable evaporative cooler work

The following paragraphs may appear a little more like the science section of the article, but I wanted to include it in case anyone was interested:

The energy required to evaporate the water is extracted from the dry air in the form of "sensible heat." This has an affect on the actual temperature of the air and is converted into "latent heat." This is the energy that is present in the air's water vapor component. All the while, the enthalpy value of air remains constant.

The process of sensible heat conversion to latent heat is known correctly as an "isenthalpic process" since it occurs at a constant enthalpy value. From this it can be seen that evaporative cooling (working with a phase change of liquid water into vapor along with the latent heat of vaporization) creates:

This phase-change cooling process can be seen in a visual manner with the use of a psychrometric chart, finding the initial condition of the air and then following a line of constant enthalpy that will lead toward the air's state of higher humidity.

If that didn't exactly make a whole load of sense, don't worry. The general idea here is that this process makes it possible to reduce the temperature of the air to create thermal comfort inside a building while using far less energy than a comparable air conditioner that uses a refrigeration model to produce cold air.

In extremely dry climates (very low humidity), the ventilation and cooling of air through evaporation has the additional benefit of humidifying or conditioning the air with moisture providing greater comfort for a building's occupants.

The cooling potential for cooling by evaporation is largely dependent on the difference between the dry-bulb temperature and the wet-bulb temperature (known as wet-bulb depression). In the dry, arid climates that are best served by this method of cooling, energy consumption is greatly reduced along with the total equipment needed as an alternative to compressor-based cooling (AC).

In climates that are not necessarily considered to be arid, advantage can still be taken of the indirect evaporative cooling process yet still not causing an increase in humidity. Passive evaporative cooling strategies will offer similar benefits of hardware, mechanical evaporative cooling systems all without the added complexity of external equipment and ductwork.

Free Standing Portable Air Conditioner Without Vent Hose?

Despite what you have already read here, you may be surprised to know that there are many people that will ask, "Can you really have such a device that will keep you cool but doesn't need a ventilation hose to vent hot exhaust air to the outside of the house?"

portable air conditioner without vent hoseAnd if those people had been reading this page, their question would already have been answered! But even so, it can be a little difficult to really understand this if they've been accustomed to using a regular aircon device that did have an exhaust vent.

Let's talk about this a little. I'm sure you already know that in order for a refrigeration device (which is essentially what a portable air conditioning unit is) to produce chilled output via the use of "vapor-compression refrigeration" or an absorption refrigerator method, it must generate a similar amount of heated output from the heat exchange process. You can't have one without the other!

That heated output cannot be allowed to disperse in the room you want to occupy or it will increase the temperature, not reduce it--which is your aim. So it must be forced outside of the room (preferably outside of the building altogether) and that's what the exhaust vent is for.

That flexible corrugated plastic pipe is a nuisance at best because it has to be fitted to an installed outlet in the wall or as is more often the case, dangled out a convenient slightly open window. The latter case is not ideal as some of the heat will re-enter the room through that window opening, but the net effect is a cooler room so the occupant is happy enough with the system.

Evaporative Air Cooler vs Air Conditioner

Then you have the alternative in the free standing evaporative or swamp cooler that does away with the need for a refrigeration heat exchange process altogether and relies on nature's own temperature control process: cooling by evaporation. This simplified process means there is no heat exchange and therefore no heated output from the device, only cold output as long as the humidity level in the room is sufficiently low (below 50% is optimum).

Where conditions are ideal (and you want to compare evap cooler vs air conditioner), the truth is that a swamp cooler can perform equally well when competing against an AC unit while doing so using considerably less power. In fact, the only real power usage is that of the fan and some ancillary power for the timer and any other "controls" that may be featured on the unit. The typical power usage is often below 100 watts of electricity.

Compare this to the considerable power requirements of an AC compressor and heat exchange engine which runs into the kilowatts range and you can quickly see how much more economical the swamp cooler is when set up against a comparable AC in terms of temperature chilling capacity. The purchase cost is another factor that sways heavily in favor of the lower energy consuming device, with comparable units costing well over half that of their more power hungry alternatives.

If It Absolutely Must Be a Portable Air Conditioner

I quite understand that there are a lot of people living in areas that have high humidity and simply cannot take advantage of the low energy evap cooler to keep them comfortable during summer's hot, sticky weather.

In this situation, a free standing AC unit is probably the only way to beat the heat effectively. If making do with a vent trailing out a suitable window means getting through the summer in relative comfort, then so be it!

I really couldn't leave such a large percentage of the population wondering which free standing air conditioner is best for them. So I've included these AC models below which are highly rated and big sellers at online stores such as Sylvane this year.

Note: As a Sylvane affiliate I earn from qualifying purchases.

Take a look for yourself by clicking the image or link below it:

LG LP1217GSR 12,000 BTU Portable Air Conditioner

The LG LP1217GSR 12,000 BTU is capable of cooling, dehumidifying and circulating air in rooms up to 400 sq ft and is one of the most versatile mid-powered ACs on the market.

This single hose air conditioner is ideal for bedrooms, living rooms, home office space in all sizes of home from small apartments to larger houses.

Set the precise temperature and program the timer on the electronic touch control panel or use the included remote control.

It features an auto-evaporation system to remove excess moisture through the exhaust hose instead of allowing it to condense into a tray. So there's no need to drain preiodically like most portable units.

In addition to cooling, it also has a dehumidifying function that is capable of removing up to 2.6 pints of excess moisture per hour. There is a removable, washable air filter that works to eliminate dust particles and allergens in the air.

To help make it easily portable, there are durable caster wheels for easy movement. It features auto-swinging louvers and powerful air circulation all with a quiet operation rated at 53 dB.

Honeywell MM14CCS

The Honeywell 14,000 BTU portable air conditioner is ideal for spot cooling and creating a pleasant, comfortable atmosphere in spaces up to 500 square feet.

This sleek portable air conditioner is also available with heat for year-round use (the model on review is the "cool only" model).

Both options provide powerful cooling to quickly offer pleasantly cool air to medium-to-large rooms such as living rooms, home offices, basements or large bedrooms.

It is very easy to set the ideal temperature you prefer either direct from the unit's control panel or from the remote.

This unit's thermostat works to maintain the temperature you set without any further work for you to do There is a programmable timer and 3 fan speeds that can also be set on the panel or on the remote.

As well as cooling, this model has a dehumidifying function as well as a fan-only mode for those times when it's warm but just not hot enough for the additonal cooling power of the AC.

Do You Want One?

Simply click the image above to visit the product page at the Sylvane website where you can get the full details and spec and order it for yourself online. There is free shipping on these models and the prices are competitive with other online stores.


Note: The two AC units above must be vented to the outside via a flexible exhaust duct (vent hose) supplied with the unit. Use the window fixing kit supplied for best results.

The above models should not be confused with the ventless portable air conditioner type of cooler.

The above refrigerant-based portable AC examples have been included for those folks that live in climates with high summer humidity levels. By that I mean the kind of hot, humid climate where swamp (evaporating) coolers will not work as effectively as AC.


There are many very good reasons to opt for a low power, high output climate cooling evaporative device over a regular portable or fixed AC or HVAC system when climate conditions are right.

However, please remember this is true only when the local climate will sustain this type of cooling device. That means you really need to have low enough humidity levels during the hot season (preferably below 60%) so that it works effectively.

If your local climate is right (low humidity) and cost, running costs, environmental factors and sheer portability are benefits that fit with your own personal values, then an unvented air conditioner (...and now you know that's really an evaporative/swamp cooler) is the choice you should be making to keep you and your family cool during the hot summer months.

Resources: US Dept of Energy