Archive for Air Conditioners

Commercial and Home Air Conditioners

The summer is officially upon us and the heatwave is here! We’ve been getting a lot of calls for air conditioners this week and I thought I would blog a little to help anyone who is browsing around and wondering what they need. For those of you that do not have central air, there are three main types of air conditioners; portable, window and through the wall (TTW).

air conditioner sizing chartAir conditioners are available in a number of different sizes, both physical sizes and capacity ratings. Some air conditioners are available with heat. To the right you will see a chart that is a guideline for determining how many BTUs you will need to effectively cover your area.

You may want to step up to the next size if you have large windows where the afternoon sun is shining in or if you have more than 1 person per 100 square feet. Be careful not to oversize too much or you will be creating another problem which is creating a cool damp (clammy) environment. It’s important that the air have enough of a heat load so that the air conditioner can remove humidity. If you suspect you have a cool damp environment, or would like to supplement your air conditioning system, you may to consider a dehumidifier.

The three factors you need to consider are, installation options, btu capacity and electrical compatibility. Regular household electricity uses the standard 115 volt 3 prong plugs and may also have 230 volt receptacles available. Make sure to verify the plug type before purchasing any air conditioner.

Through the wall air conditioner
Through the wall air conditioners are available in three chassis sizes and install into a sleeve that is installed into a rough opening going through an exterior wall. PTAC and PTHP air conditioners are console units, like the ones you may see in a hotel room or classroom. These types of systems usually have an optional heater strip. The power of the heater depends on the plug type that you choose. Three other chassis sizes are available for through the wall air conditioners:

air conditoner wall openingA and B chassis air conditioners require a rough opening 27 1/4 inches wide and 17 inches tall. U Chassis air conditioners require a rough opening of 27 inches wide and 16 inches tall. A and B chassis air conditioners require you to purchase the sleeve and the front and rear coverers separately, while the U chassis air conditioners come complete with sleeve and covers. Make sure you correctly measure you wall opening.

window air conditionerIf you do not have anwindow air conditioner measuring. opening in your wall you may opt for a window air conditioner. These units also have sizing requirements and will state their minimum and maximum window sizes. Be sure to match the size with the window in which you plan to instal the air conditioner. Window air conditioners range in size from 5,000 BTUs up to 24,000 BTU units. Many also offer a heating option. Window air conditioners are a good option for renters or non-permanent installations. Again, it is important that you measure and inside opening of your window to make sure you are selecting an air conditioner that will fit into your window.

Portable Air ConditionerIf your window is too small or if there are other reasons why you cannot select either a window air conditioner or a through the wall system, consider a portable air conditioner. Portable air conditioners are console units that sit completely inside of the room and use a small flexible hose to exhaust the hot humid air outside. Many models are available, some with heat. These are very portable and can be moved from room to room with ease.

I hope that this information helps you choose the right air conditioner for your needs. If you need additional assistance, please feel free to call in and speak with on of our air quality specialists 1-800-551-8544 and stay cool this summer!

Comments (16)

Air Conditioners

air conditionersIn 2005 we picked up the Fedders line of air conditioners and have expanded the selection for 2006. Now, in addition to the portable air conditioners and window air conditioners we have carried in the past, we have added several new products.

Our window air conditioner line has been expanded to include some high end air conditioners and through-the wall air conditioners. With several chassis models from which to choose (x chassis, Q chassis, Y chassis, D chassis, K chassis and V chassis) we have window air conditioners that range in size from 5,000 btu up to 32,000.

commercial air conditionersOur new line of commercial air conditioners include the PTAC and PTHP units, which you my have seen as wall mount console units in hotels, schools and other commercial applications where a central AC system is not feasible.

air conditioner sizing chartOne of the most common questions we here is about sizing an air conditioner. This is one place where bigger is not always better. Air conditioners cool indoor environments by accomplishing two things, reduceing humidity and cooling the air. If you put to large of an air conditioner in a room, it will cool the room off too quickly. By doing this, the compressor shuts off, which means that the AC unit is not on to reduce humidity.

If the humidity is not reduced, you end up with a cool moist room, which doesn’t feel comfortable. For ideal comfort, it is best to size the proper btu air conditioner for the room size. The table to the right is what we use for most applications. Also consider airflow when sizing air conditioning systems, one unit can only circulate air in one open area, it does not work through walls, floors, down hallways, etc. If you are trying to cool an entire house, office or building, size one air conditioner for each area.

If you have any questions, give us a call, we’ll be glad to help.

Comments (7)