Commercial Portable Air Conditioner (aka spot coolers)

If you're looking for commercial portable air conditioner information, you're almost home. The link below leads to a good article that talks about when, where and how you might need one of these units (aka spot coolers). Check it out...

Commercial Portable Air Conditioners For Many Business Applicationshttp://www.americanspotcooling.comThu, 11 Apr 2013 17:00:00 GMTcommercial portable air conditioner rentals, Atlanta portable commercial air conditioning rentals rental portable air conditioner, Atlanta temporary power supply, Atlanta emerggency rental generators, Boston commercial ...

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Your Guide To Purchasing The Perfect Vertical Window Air Conditioner

With the evolution of modern technology, air conditioners are no longer the ozone depleting monstrosities they once were. Most manufacturers place extra focus on providing environmentally safe air conditioners and energy efficient models. Vertical window air conditioners have become popular due to their ease of installation and affordability. We will take an insider look at window air conditioners and what you need to know in order to purchase the right one. An air conditioner has an important job to do in your life, i.e. keeping you and your family cool when it's hot outside. As a result, it's important to pick one that can and will do the job. You want one that not only meets your needs now, you also want one that will serve you wall for years to come. No one wants to have to buy and install and air conditioner every year.

Vertical Window Air Conditioner Facts To Keep In Mind

-These types of air conditioners are meant to be installed in your window in a semi-permanent fashion. They can be mounted in a double-hung window or a vertical slash styled window. Unfortunately, most popular AC units cannot be installed in casement type windows.

-Almost all window air conditioners contain an air filter to remove the large particles in the air and pump back air that is more purified.

-Your average AC unit mounted in your window will contain a compressor, evaporator coil, and a condenser coil. There should also be a thermostat to control the temperature, two motor fans, air filter and an expansion valve.

-In order to provide the cool air you love, air conditioners use something called a refrigerant. This is a compound which helps absorb the heat from its surroundings and release cool air back into the room.

The Pros Of Owning A Window Air Conditioner

As with all household appliances, there are benefits you reap from owning a certain model or type. Window air conditioners are the same way. Why should you own one?

-They are easy to install with minimal tools and manual labor. In lesser terms, anyone can do it, even you!

-If you don't like the location or don't need it there any longer, you can remove it from your window and transfer it elsewhere.

-You are able to cool more than one room if you place the unit in a strategic location.

-You spend less money cooling separate common rooms in your household than if you were to cool the whole house.

-It is not necessary to have a company install a central air conditioning unit which can cost up to thousands of dollars.

A Focus On Energy Efficiency

It is only natural that you want to save money on your summer cooling costs. Most homeowners use vertical window air conditioners in order to cool small spaces and cut down on energy costs, making it ideal for even those who already have central AC. If taken care of, these units will cost you less money to operate and last a long time. Look for these two things when determining the energy efficiency of the unit:

-An Energy Star Seal should be present. Those units that have been labeled with the Star Seal will use 10 percent less energy than their conventional counterparts. These units will also contain extra features that help you regulate the temperature in the room.

-Energy Efficiency Ratio or EER is another popular indicator of a model's energy efficiency. This ratio is calculated in British Thermal Units or BTUs of how much your chosen unit will use for each watt of your household's power. The higher the BTUs of the unit, the less money you will spend cooling your home. You should look at models that use at least 10.00 BTUs according to the U.S. Department of Energy.

Keep In Mind The Cooling Capacity

The cooling capacity in a given room is measured using BTUs per hour of usage. If your room is too large and the BTU power is not enough, your air conditioner will have to work overtime to cool down the space, costing you extra money. In an opposite scenario, too much BTU power will retain the humidity in the room while cooling it.

In order to find the right window air conditioner for your room, you need to know the square footage of the space you want to cool. Use the list below to determine which amount of BTU you need.

-100 to 300 square feet of space usually require a unit with BTU power of 5,000 to 7,000 per hour.

-Up to 400 square feet of space needs a model that can run with a BTU power of 8,000 to 10,000 per hour.

-450-650 square feet of space will require a unit that uses anywhere between 10,000 to 12,500 BTU power.

Installation Types For Your Unit

There are generally two types of installation options for you when choosing a vertical window air conditioner.

The first option is to install your unit inside of your window. You will need to take care when measuring the amount of space your unit can take up. Your air conditioner will not extend to fit inside of your window; it comes with an easy to assemble installation kit.

Some homes have window sizes that don't make installing a window air conditioner optimal. You can opt for a through-wall installation which requires an opening on your wall in order to install the unit. Keep in mind that you need to be extra careful with your measurements when choosing this method.

Extra Features To Focus On

-Ensure that your air conditioning unit has at least two fan speeds. This can keep cooling flexible and keeps the noise level low.

-All window air conditioners will have a certain amount of noise. Some models tend to be worse than others. Before making your investment, figure out how much noise you can really take.

-Be comfortable with the controls on your unit. Cheaper models will contain manual thermostats and buttons. More luxurious models can sport a digital thermostat, making it easier to handle for some.

-Ensure that your household's electrical system can handle the window AC. These types of appliances require much more electricity than your average household appliance.

Never Forget The Importance Of Safety!

Since most of these units take up space in your window, it is easy for intruders to remove them from outside to get inside of your home. This makes it important that you install your AC unit to fit snugly in your window space. You can purchase extra brackets to ensure that your AC unit is tight and won't budge.

Don't set decorative objects of any sort on top of your unit. Objects such as books, bricks or even bird-feeders can force the air conditioning unit loose.

If you are buying your first vertical window air conditioner, then it is understandable that you be confused. Buying a household appliance you know nothing about isn't easy. Consider what this article discussed to make smart decisions when choosing the perfect unit for you.

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Facts About Free Standing Air Conditioner Units

A free standing air conditioner is used to provide additional cooling to specific areas in your home or office.  These air conditioners do not require permanent installation, but may require a window for venting or a separate space where their exhaust can be directed.  Many of the models also dehumidify as they cool.

Each of the brands will vary by the size of area they will cool, by how they need to be vented, their energy efficiency, and if they have any special features.  Some will have remote control capability, programmable timers, specialized air filters and multiple operating modes.

Size is the most important factor to consider when selecting a free standing air conditioner.  If it is too small, it will not cool the area you bought it to cool and if it is too large, then it will shut down before it removes the excess moisture which will leave your area damp and subject to mildew and mold.

Depending upon the size of the area you are trying to cool, here are some estimates of the size BTUs you will need:

• 1,700 sq ft w/8 ft ceiling ~60,000 BTUs
• 740 sq ft w/8 ft ceiling ~24,000 BTUs
• 500 sq ft w/8 ft ceiling ~14,000 BTUs
• 450 sq ft w/8 ft ceiling ~13,000 BTUs
• 400 sq ft w/8 ft ceiling ~12,000 BTUs
• 300 sq ft w/8 ft ceiling ~10,000 BTUs
• 200 sq ft w/8 ft ceiling ~9,000 BTUs
• 150 sq ft w/8 ft ceiling ~7,500 BTUs

Also, if you have any of the following you will need to increase the power and size of your free standing air conditioner:

• rooms with high ceilings
• rooms poorly insulated, like a workshop or a garage
• the climate is very warm or humid
• the area has heat-generating appliances or lots of windows

Venting the Exhaust

All free standing air conditioners will give off hot air as part of the cooling process.  This hot air is usually vented out of the cooled area through a window, a door, a wall, or a drop ceiling.  Most portable or free standing air conditioners will come with a kit to vent the exhaust.  This kit will include the proper hoses and parts and will typically work with a window, door or a drop ceiling.

It is almost always possible to set up a portable air conditioner to vent the exhaust through a sliding glass door or a window.  Depending upon the model, however, the exhaust kit may not cover the entire door or window.  If this happens, then any gap must be covered with another solid material such as plexiglass and duct-taped into position so there is no leaking.

Free standing air conditioners can be either double or single hosed for sending the exhaust hot air out and pulling more air in to cool.  There are some models which have both.

Dual-hose - the dual hose model brings air from the outside in through one hose and uses that air to cool the area.  The hot exhaust air is then sent outside through another hose.  Through this process, the dual-hose air conditioner does not create negative pressure in the room while it is cooling, although some models use two fans which can result in slightly higher energy costs.

Single-hose - the single hose model draws air from the internal space it is cooling, cools it and then returns it to the room.  A small amount of this same air is used to cool the unit and then that air will be blown outside as exhaust through the unit's exhaust hose.

Condensation

Free standing air conditioners also act as dehumidifiers which means they also remove moisture from the air and collect it.  Different models have different ways of handling this moisture collection:

collects in a bucket - The very simplest of portable air conditioners simply collect the moisture and water in a collection bucket which must be regularly emptied.

Pumps - Some models have condensation pumps which are separate accessories to help pump the collected water out through a drain hose.

Gravity drain - Any free standing air conditioner can be set up with a permanent water drain hose to continuously send the collected water to a floor drain or some other means of draining it off.

Self-evaporative - Some models are partially or completely self-evaporating which means they use their air conditioning exhausts to evaporate all or part of the water collected.  Those that are partially self-evaporative may have to have the water manually emptied every once in a while if environmental conditions are especially humid.

Energy Efficiency

Free standing air conditioners are generally very energy efficient.  This means they can help save money on the monthly electric bills, especially when it is hot and humid.  Their efficiency is measured by their Energy Efficiency Rating (EER).  The higher a models EER, the more efficient that model is.  If a model has an EER of 10, that is going to be a pretty energy efficient portable air conditioner.

Power Requirements

Most free standing air conditioners use a regular household outlet with 120V and do not require and special wiring.  However, if it is a commercial-grade unit, it may need a 220V outlet.

Noise

Portable air conditioners do make noise because they have a compressor system and fans that circulate and cool the air.  Some people are not bothered by it, considering it is nothing more than background noise, while others find it irritating.  If you think it might be a distraction, there are models with noise minimizing features including multiple speeds and a programmable timer.

Many models will list the decibel rating of each fan speed which will provide an idea of how loud the unit will be.  Remember, though that the sound will be impacted by the size of the room and by furniture, carpet, and where the unit is located relative to who is listening.

Maintenance

Free standing air conditioners generally require little maintenance other than what is typically done with permanent air conditioner units.  Routine maintenance tasks with a portable air conditioner unit include:

• before storing the unit, ensure it is completely drained
• if it ices, defrost it completely
• Install it correctly to ensure maximum operating efficiency
• Install new or clean the air filters at least once every summer

A free standing air conditioner is a good option if your home or office needs supplemental cooling, but not an entire new air conditioning system.  These units are portable and can be moved from area to area and used wherever there is a need for cooling and then easily stored when not in use.

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Cooling Capacity Of A 3 Ton Ac Unit

What Is The Cooling Capacity Of A 3 Ton AC Unit?

When an air conditioner is described as 3 tons, we realize that we are not describing the weight of the unit. It is a measurement that describes how much heat the unit can remove from a living space in one hour. A 3 ton AC unit will be able to remove 36000 BTUs from a living space in one hour. A BTU which is also known as a  British Thermal Unit is the energy that is required to increase the temperature of one pound of water one degree Fahrenheit.  However, for the majority of people, 3 tons will mean 6,000 lbs.

In a bygone era, ice was harvested from rivers and other bodies of water and used for cooling purposes, prior to the advent of air conditioning units. A ton of ice will take about 286,000 BTUs to completely melt. Using 24 hours as the reference of time, if the ice melts in 24 hours, it will absorb heat at 286,000 BTUs per 24 hours or 11,917 BTUs per hour.  This number was rounded up to 12,000 BTU/hr.  Therefore, to this day, one ton of cooling capacity is equal to 12,000 BTU/hr.

Now, we will provide you with some information as to why your 3 ton AC unit will rarely have a 3 ton capacity. We are not going to describe the numerous reason that have to do with faulty installation, design, or poor maintenance.  We are going to describe why your 3 ton AC unit may not have the capacity you think it has, even when it is installed, designed and maintained well.

Actual vs. Nominal Capacity

When we describe AC capacity, we are normally talking about the nominal value. An AC unit that is 3 tons will have a nominal capacity of approximately 36000 BTU/hr, however its actual rating when using AHRI specified operating conditions will very rarely be the same value as nominal capacity. For instance, if an AC unit is called a three ton unit or 36000 BTU/hr it will have an actual capacity that will equal 2.8 tons or 34000 BTU/hr.

Actual Conditions Of Operation As Opposed To AHRI's Indoor Conditions Of Operation

AHRI ratings are performed for an indoor temperature of 80 degrees Fahrenheit for its dry bulb test and 67 degrees Fahrenheit for its wet bulb test.  However, the temperature most homes will operate at will be closer to 75 degrees Fahrenheit for the dry bulb test and the relative humidity will normally be about 50%.

We can examine this temperature difference and try to determine how it will effect the cooling capacity of an AC unit.  If cooler air is brought into the air conditioner than it was rated for, it will take more energy to cool it further than it would take to cool warmer air.  Since AHRI's rating assumes the temperature of the air that is brought into the AC unit is 80 degrees instead of the normal operating conditions that will often have 75 degree air intake, the cooling capacity of your unit will be overstated by AHRI. To put it differently it takes more energy to remove heat from lower temperature air than from air that is at a higher temperature.

Since it is more difficult to further cool air that is at 75 degrees F than 80 degree F air, this means that your 2.8 ton AC unit will not be 2.8 tons under actual operating conditions. In addition, humidity levels must also be taken into consideration. The net take home message is that the AHRI rating of your 3 ton AC unit will be less than the AHRI figure, unless you maintain your thermostat at a temperature higher than 80 degrees.

AHRI Outdoor Conditions Of Operation Vs. Actual Conditions Of Operation

AHRI makes use of 95 degrees Fahrenheit as the outdoor testing temperature. If the outdoor temperature that you are operating in is different, you capacity will again be different from the AHRI rating. If your outdoor temperature is less than 95 degrees Fahrenheit it will make it easier on your unit, but if you live in a very hot desert climate, like Las Vegas, with temperatures frequently in excess of 100 degrees Fahrenheit your 3 ton AC unit will have less capacity. This occurs, since it is more difficult to disperse heat into hotter air than cooler air.

Further Reasons For Rating Variation

The reasons for rating variations that we have listed are not related to installation, design, or maintenance issues. There are numerous factors that relate to these issues that will also have an affect upon capacity. This may include the following:

• Poorly designed and constructed duct work
• Condensing coil air flow is poor
• Refrigerant is not charged properly. 
• Filters and coils are dirty

These are all reasons why you may need a larger air conditioner than you initially thought you would need.

Take Home Message

The thing you need to remember is that you must know a bit about your operating conditions, outdoor conditions, and your installation in order to assess the size air conditioner that you will need. For the reasons we described above, there is a good chance that you will need more capacity than you originally anticipated.

Taking all these issues into consideration will help you in choosing an appropriately sized air conditioner for your particular needs. However, it is also not beneficial to have too much cooling capacity, or an oversized AC unit. This type of unit will certainly be more costly, but operationally, it will not work as well. This is because an oversized unit will tend to cycle on and off more frequently.

The temperature in the living space will certainly be reduced to whatever you have set your thermostat at, but the air in your living space will have a higher humidity than you would likely desire. Since the unit will cycle on and off more frequently, because of its excess cooling capacity, less moisture will be removed from the air, resulting in a higher level of humidity.

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An 18000 BTU Air Conditioner Review

Air conditioners with an 18000 BTU capacity are used to cool large rooms. They are designed to cool commercial and residential buildings, and they are frequently used in industrial buildings. These big units pack a lot of cooling power. An 18000 btu air conditioner room size has a lot of cooling power. Although they do exist, this article does not cover 18000 btu portable air conditioner models.

18000 BTU Air Conditioner Review

An 18000 BTU air conditioner is designed to cool rooms that have an area of 1100 to 1500 square feet. Due to the size and power of these units they are frequently wall mounted but they can also be window mounted or used as a split air conditioning unit.  In addition to cooling the air in a room, they also help to purify it. We will review three popular units from Frigidaire, GE, and LG.

Frigidaire FRA18EMU2 Air Conditioner

This unit is window mounted and it has a cooling capacity of 18500 BTU. It can also be used as a heating supplement since it has a 16000 BTU heating capacity.  This unit is great for  rooms that are about 1200 square feet in area. It is also an effective dehumidifier since it can remove about 5 Ω pints of water each hour. Frigidaire has also equipped it with an antibacterial filter to remove airborne allergens.

Since this unit is window mounted it will not use up wall space in a room and it has side panels, so it will fit into the majority of window spaces. In contrast to many units of similar size, this unit has an eight way airflow directional and several speeds so it will rapidly cool a large space on a hot and humid day.  The heating option will also serve as an adjunct to your heating system in the Winter if the need arises.

This unit operates very quietly and it has a sleep mode to save energy that will gradually adjust the room temperature upon activation. It also comes with a remote control that will operate all the functions of this unit. In addition, when you start it, it will not induce a large power spike since it is designed for a low power consumption start up.

This unit has three different cooling speeds and a directional air flow options that has eight settings. It also has a feature that will adjust the speed of its fans as the room temperature changes and a twenty four hour timer.  It also has three heating speeds.

Operates Very Quietly

This unit is extremely quiet and it will keep the air comfortable and save energy by raising the temperature automatically. This unit is quiet even at the highest fan speed.

Very Versatile Controls

This unit has controls which are ready-select and it also comes with a remote that has full functional control of the unit.

Power

With a cooling capacity of 18500 BTUs this unit can cool rooms that are 1200 square feet.

Potential Problems

You will need a 230 volt power outlet for this unit. This is something to consider before purchasing it. In addition, many consumers have complained of receiving damage units due to poor packaging.

Final Remarks

There are very few models of this size that can fit into a window that have the features this unit has for its price level. It is very easy to control and it functions well in the window space it was designed for.

GE AHM18DP 18000 BTU Air Conditioner

This unit can also cool spaces of up to 1200 square feet. It is a very efficient model with a 10.7 energy star rating. It is estimated to cost about $140 to operate for one year.
It is designed with an electronic thermostat, an LED display, and a panel that has touch control.  It also features a delay timer.

This unit has 3 fan speeds and 4 separate mode setting. Therefore you can operate it in cool only, fan only, auto modes, or energy saver mode. The auto mode is used to turn off the compressor when the temperature setting is reached. In energy saver mode the fan will also turn off when the compressor is not operating.

By adjusting its louvers you will be able to direct its output to almost any room locations. You can use its built-in timer to set it to come on before you get home and off when you retire for the evening. Its remote control will allow you to adjust all of its features from as far away as twenty feet from the unit.

If power is interrupted it has a restart feature that will restart your unit at the prior temperature setting when power is restored with no additional adjustments required.

Like the Frigidaire, this unit will fit into a window opening that at least 17 3/8' high and 28 3/8' wide. There are instructions for installation modification for other types of windows and for wall mounting. The unit is designed with a chassis that will allow you to slide the unit out. This makes it much easier to clean and install it. The unit has an air filter located behind the front grill that's easy to remove for cleaning.

This GE unit also requires a 230 volt electrical outlet. It is sold with all necessary mounting hardware and it has a one year warranty.

LG LW1812ERS 18000 BTU Air Conditioner 

This is another unit that can be window mounted and it will cool an area that's up to about 1000 sq. ft.

This unit is quite efficient and comes with several features to save energy. It has a twenty four hour timer that is programmable and an energy saver function that will turn off the compressor and fan when they are not needed.

This unit is also designed with an coating to prevent corrosion and it has a full function remote as well. The fan on the unit has three speeds and it comes with auto cool functionality so you can set the unit and it will operate in the most efficient manner for your settings.

Before you decide to purchase this machine you should understand that it is quite heavy. It weighs close to 50 kg. So make sure that your window sill can support this much weight before you buy it, otherwise, you will have to install it as a wall unit and have bracing for it. An 18000 btu wall air conditioner is not a common site in a residential setting due to it's size.
Next, like the other two units mentioned above, you will need a 230 Volt electrical outlet in order to operate it.

Conclusion

We have discussed three 18000 BTU air conditioner models that can all be mounted in a window. All of them are good choices, but for the price and features offered, the Frigidaire is our top choice. It features a combination of power, efficiency, and price that is difficult to match.

Hopefully these three18000 btu air conditioner reviews have been helpful.

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Review Ratings on Portable Air Conditioners

The ratings on portable air conditioners can be indicative of their functionality and ability to cool a room in the house. The advantage of a portable air conditioner is the ability to be able to move it from room to room, rather than have it stuck in a window, unable to be easily moved.

The problem with portable air conditioners is that they are not as effective as window units in that they are somewhat inefficient and provide only about half of the energy efficiency ration that they advertise. The reason for this is that the air that gets exhausted to the outside will originate from the room being cooled and energy that is being used to dehumidify and cool the room is sent out the vent hose and wasted.

Ratings on Portable Air Conditioners

There are portable air conditioners that have a configuration of two hoses. One hose will pull air in from the outside that will cool the coils of the condenser, and then the second hose will exhaust that air to the outside. This procedure works similarly to a window unit and they seem to do a better job in living up to their efficiency ratings.

Portable Air Conditioner Noise Ratings & Issues

Portable air conditioning units are fairly noisy, compared to most window units, but the convenience of being able to easily move the units around the house or apartment to wherever needed, might make up for the noise.

Another problem is that portable units create a lot of water. Most of them have a pan to collect the water, but sometimes more is created than can be collected. Some units will use the water to cool the coils of the condenser. In this case the water evaporates and is discharged.

The preferred type of portable air conditioner to purchase is one with a two hose system and one that disposes of water by cooling the coils efficiently.

Portable Air Conditioning EER Ratings

EER stands for “energy efficiency ratio.” The EER tells you how efficient the portable air conditioner you are considering is. This is an important consideration because air conditioners of all types consume lots of electricity. The more efficient your unit is, the less money you will have to spend to operate it.

The following ratings on portable air conditioners are based upon testing and consumer reviews:

The Whynter Portable Air Conditioner is a dual hose system that provides up to 12,000 BTUs. The manufacturer states that the air conditioner will work well cooling a 400 square foot room. It has an auto drain capability, which makes things really convenient because water does not have to be manually drained from the unit. The moisture is then recycled and helps to cool the coils of the condenser.

The Whynter has three different functions. It can be used as a dehumidifier, a fan, or an air conditioner. As a dehumidifier it will remove up to 96 pints of water per day. Casters on the bottom of the air conditioner make moving it around easy. The design is clean and modern looking with its white exterior and a thinly modeled black panel in the front. It has a conversion kit, if it needs to be placed in a window. This unit retails for $463.99.

Frigidaire has a portable air conditioner that has some very unique features. The Frigidaire puts out up to 5,000 BTUs and will cool a room in the 200 square foot range. The controls are very straightforward and easy to use. It features a remote that allows control of the fan speed and the temperature. There are three speeds for the fan and it has a directional air control so the air can be directed to any area desired. An ionizer is included with the unit so that impurities in the air will not be spewed into the room. Sporting three speeds for cooling, it has a heavy-duty filter inside the unit that helps reduce bacteria and odors. Room temperature is easily maintained and has been tested on separate thermometers for validation. The unit will run the next day on the last setting used when turned off the day before, which is a very convenient feature.

The Frigidaire has a 24-hour timer so that it can turn itself on automatically before the user arrives home. The sleep mode will slowly increase the temperature of the room after the time it is turned on. Side handles make moving the Frigidaire easy. The Frigidaire retails for $349.99.

The NewAir Heat Pump Portable Air Conditioner is a bright spot on the list of portables. Its 12,000 BTU model will cool a 450 square foot room with ease. This unit is very quiet and is hardly noticed when running. It is extremely versatile as it can be run as a fan, a dehumidifier, a heater or an air conditioner. It has a cooling system that is auto evaporative so the dumping of water does not have to be done on a daily basis. Moisture is taken out of the air to cool the coils of the condenser. Some would say, this is the top rated portable air conditioner.

The NewAir has a remote for convenience and features a 24-hour programmable timer with a sleep mode feature. The unit is very easy to move and is quite useful with all of the different modes of operation. This unit retails for $458.95

The Whynter Dual Hose unit with heater is another great performing portable. The BTUs on this unit are 14,000 and it will cool a room up to 500 square feet. The heater that’s attached is a wonderful feature as the unit can be used year round. The heater is very quiet and efficient. The drain technology takes the moisture produced by the air conditioner and recycles it so very little is left to dump, if any at all. Also included is a thermostatic control device with a digital readout. When looking for the best portable ac, this is one to consider.

The Whynter Dual Hose can act as a dehumidifier and will extract 101 pints per day of water. Three different speeds for the fan are also featured. The wheels on the bottom of the unit make moving it from room to room a breeze. The unit retails for $540.

For a person living in a smaller home, or an apartment, these portable air conditioners make sense. Having the convenience of being able to move them from room to room saves on the cost of having to install several window air conditioners, or needing to have a central air conditioning system installed. Coupled with the fact that some of the units also combine dehumidifiers and heaters, makes this type of air conditioner very practical. Hopefully these ratings on portable air conditioners are helpful in selecting the best one for your home.

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Central Air Conditioning Installation Video

This video is about central air conditioning installation. This video does a really good job of showing you how a central air conditioning system is installed in a house. It shows how the load is calculated, how the duct work goes in, how the condenser is installed and how the holes are created. If you are thinking about installing a central air conditioner, this video may be of interest.

Duxbury Central Air Conditioning Installation

SIGMA Mechanical Services installs a Central Air System in a home in Duxbury, MA. 781.837.9994 www.sigmams.com.

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