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These days, air conditioning is essential with the effects of global warming just seeming to produce hotter summers. The good news however, is that the latest air conditioners are much more efficient than former models. Though, buying the wrong size air conditioner will often see you using a lot more power than you have too and over a year this can prove to be an expensive mistake!

Air conditioners are used a great deal each day within the U.S. Some people choose to go with either a gas air conditioning unit or evaporative coolers because they are more economical to operate. Others like a little luxury and choose a premium air conditioning unit because these have a hushed operation. In choosing a quality air conditioner, you’ll be buying yourself a unit that will function more than competently and will help save you fair amount of money in energy bills over the year.

Not only are air conditioners essential in helping keep us cool within our homes; but they also add to the long term sturdiness of your home. Modern air conditioners can also add warmth, moisture and humidity to our homes.

In many areas of the U.S. air conditioning is no longer a luxury, it’s a necessity! We just wouldn’t be able to survive without it. You’ll find that air conditioning can be costly to run, especially if you choose an incorrectly sized air conditioning unit. One of the most costly to operate are portable air conditioners, these will always use a fair amount of electricity but will never get rid of the humidity satisfactorily.

When comparing air conditioners always be sure to check the seer ratings. This basically tells you just how efficient the air conditioner is. The higher the seer rating, the more efficient the air conditioner is. Just a few points difference in the rating can save you a lot of money in electric bills over a year!

Mark Gardner is a popular webmaster and publisher of my-air-conditioning.com To learn more about air conditioning check out his website today!

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It is a subset of HVAC (heating, ventilation and air conditioning). The ultimate purpose of HVAC, is to provide comfort for our everyday living.

Let’s go through some explanation on “H” and “V” part, before going into “AC” section.

The “H” part in HVAC, stands for heating.

This heating is associated with radiators, furnaces, fire place stoves and electric heating. Radiators are fed with hot water from boilers, fire place and stoves provides radiant heat by burning wood or coal, furnaces
heat up a given space by means of fossil fuel burning, and electric heaters use the principle of electrical
resistance to generate heat.

Heating is used mainly in very cold areas.

“V” stands for ventilation in HVAC.

Ventilation topic relates to air circulation and movement between an open space, and an enclosed space. It is possible to achieve this by means of natural occurrence, or by means of forced ventilation. Equipment that aid ventilation include chimneys, blowers, eductors, and ventilators.

Purpose of ventilation is for safety of occupant in a space, as well as comfort. It is especially useful in case of fire.

Finally, “AC” is a short form of, air conditioning.

Contrary to popular belief, it is not just about refrigerant filled air conditioners. The word “conditioning” itself, suggests that, air conditioners should condition the air, to reach comfort level of occupants in a room.

The equipment should do any, or a combination of the following, to reach comfort level,

• Alter air temperature by means of cooling or heating,

• Alter air humidity,

• Circulate and mix air,

• Filter and purify air

Not only that, air conditioners can be coupled with heating, and ventilation - especially with central air conditioners. Into details,

Alter air temperature by means of cooling or heating

Equipment, which can alter air temperature, by means of cooling is known as air conditioner. It is called a heat pump, if it is used for heating.

However, a heat pump is suitable for heating, only if the temperature do not go down to extremes. As such, a supplementary heating equipment (the “H” part) will be used - be it a heating strip, furnace, or radiator.

A mechanical cycle air conditioner, is an equipment with compressor, condenser, expansion valve, evaporator, and tubes, filled with refrigerant.

Alter air humidity

A conventional mechanical ACs can alter humidity. When it is used for cooling, it will also dehumidify. A heat pump will alter relative humidity as it heats up the air.

However, there are equipment built specifically for humidification, and dehumidification. These are humidifiers, and dehumidifiers.

A humidifier will add in water vapour into air, to cool down hot and dry climate areas. A dehumidifier, will be very useful in very mild air temperatures, with high humidity. Humidifier’s parts are same to an air conditioner, but the construction is different, such that air will be cooled, moisture removed, and reheated before discharging it to the room.

Circulate and mix air

Stale and stagnant air is no good for you health - let alone the uncomfortable feeling. Air circulation can be achieved with the simplest equipment - fans. Air draft will continuously displace warm air near your skin, and aid evaporation and hence, provide skin cooling by means of evaporation.

Air circulation for whole building, would require ducts and blowers. This combination is used mainly with central air conditioners. Conditioned air will be circulated to designated areas. It is also designed to take in fresh air, and expel some of used air, for ventilation purposes - the “V” part.

Filter and purify air

Most conditioning equipment, is fitted with filter as a package, or separate installation. Main reason - to filter out dust in air.

Air purification can be achieved by means of activated carbon (for odour removal), UV light (for removing germs), and HEPA filters (high efficiency particulate air).

AC is essential in our life, especially in extreme temperature areas, or even for the sake of air circulation and purification.

TS Mohamed Rasied,
Provides information on air conditioners and air conditioning in her site,
http://www.air-conditioner-selection.com/
© Copyright is owned by air-conditioner-selection.com and the author

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Perhaps the most widely used air conditioners are the window air conditioners. They are quite popular for heating and cooling in both domestic and commercial premises. The basic advantage of a window air conditioner is that unlike the central air conditioners and the split air conditioners, it fits well in the window giving a good look and it does not occupy any space of the room at all.

Moreover, window air conditioners do not need to be shifted every now and then from one place to the other. However, like any other air conditioning equipment, it produces noise, the intensity of which differs with the type and size of the window air conditioners. Constant noise can indeed be very disturbing and distressing to the home and surrounding residents.

It is, therefore, advisable for the consumer to compare window air conditioners by checking the sound power level labels on the unit or in the literature specifications. The noise levels are often given in decibel ratings and the higher the decibel level, the louder the unit will be. The sound pressure increases by a factor of ten for every 10-decibel increase. For example, 60 Decibels is 10 times louder than 50 Decibels and 100 times louder than 40 Decibels.

The compressor and the fan are combined in a single unit and mounted in the window air conditioners and this is the source of all the noise in the air conditioner. The other causes of noise could be worn bearings, cabinet rattles, dirty or rusty fan blades, worn rubber mountings and compressor wear. Regular maintenance can reduce the noise to some extent but with the passing of time, there is bound to be an increase in the level of the noise.

You should check whether your window air conditioner is vibrating or producing a rattling noise and if so, then it is not a normal situation. The reason for this can be improper installation or loose side panels. If, however, you hear a scraping noise, you should either take the help of an authorized service provider or you can also try to find out the cause and repair it yourself.

The following steps can help you in tracking the fault and repairing it:

You should tighten the screws holding the front panel onto the unit.
You should check carefully the window all round the unit. You should then turn the window air conditioner on and press your hand against the sash. If you find that as you press your hand against the sash, the sound changes in pitch, then you should put some wooden shims in the gap between the window air conditioners frame and the sash. If, however, the pitch of the noise changes when you press your hand on the glass, you should use some insulating cellophane tape between the glass and the frame. You might have to use putty if that does not reduce the noise.

If you feel that the sound is originating from within the unit, you should take the unit out of the window and check to see if the fan blades are bent. If so, just bend them back so that they match the others.

Portable Air Conditioners Ensure Economy And Convenience

With the onset of the damp weather, it becomes difficult to survive without constant central air conditioning but that can prove to be quite expensive. The answer to this problem is a portable air conditioner as it has many advantages. It is easy to shift from one place in the home to another and that makes a portable air conditioner the ideal cooling system solution for your home, office or industrial site.

The portable air conditioners are easy and quick to install, as they do not involve any lifting or tearing up of windowsills. Moreover it can be shifted very easily from one place in the home to the other. For taking care of the hot spots in the central air conditioning, the portable air conditioners are far more convenient than window air conditioners. It is also ideal for window shapes, which present problems for installation. There is nothing like portable air conditioners for use as a spot cooler in the home.

A portable air conditioner is an excellent choice for saving money as just one unit needs to be purchased and it can be shifted easily to where you need it as it is mounted on castors and some can weigh only about 36 pounds. Moreover, as only one room is cooled at a time instead of the whole house, the total energy consumption is very low as compared to other air conditioning systems.

Another advantage of portable air conditioners is the energy efficiency that they provide. The average efficiency is in the 8 to 10 range although some are as high as 15, which is 50 percent better than most older central air conditioners. The small size of the portable air conditioners is very advantageous and as such it can fit in a corner or against a wall. It functions like an effective dehumidifier if you do not vent the warm exhaust air out through a window and its size is also the same as that of a room dehumidifier.

In order to reduce humidity and allergies, even the small ones remove 35 pints of moisture per day from the room air. The portable air conditioners also use the heat-exchange principle as the other air conditioners to cool and dehumidify the air. The operating principle is also similar to a window air conditioner as the room air circulates over cold evaporator coils to cool and dehumidify it inside the unit. The room air is exhausted outdoor after flowing over the hot condenser. There is no chance of already-cooled indoor air escaping outside as two ducts are now used.

Nowadays, you have electronic controls in most models and you can set the desired room temperature, blower speed, start and stop timer, and operation mode (cool, dehumidify, heat). The portable air conditioners also have hand-held remote control with which you can conveniently change all the settings as per your need.

The other features of portable air conditioners include a built-in air cleaner with an optional charcoal filter and oscillating louvers to distribute the cool air throughout the room. You can also switch off the louvers to direct the flow of air towards yourself, if you so desire.

Jamie is author of other Air Conditioners Tips located at Home Improvement Tips and
Air conditioning Articles. Please stop by and sign up for our free home improvement tip news letter.

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