Written The evaporator coil is installed in contact with the air stream of the air conditioner. Accumulation of dirt and dust on the coils therefore decreases cooling efficiencies and it has to work twice as hard to maintain thermostat set cooling levels. These coils can be cleaned by the regular DIY types. First remove the access panel after switching off the air conditioner. Directly put compressed air from a nozzle on the coils away from the normal air flow. If high pressure air has to be used to remove stubborn dirt, do it in a way that the air flows through the fins at a 90degree angle to prevent damage. However, I would advise you to call in a regular cleaning service that will clean out your equipment thoroughly.Written You could use a Fin Comb and a brush with Hard bristles along with water.Fin Combs generally come in different sizes depending upon the spacing between the fins of the heat exchanger.Sometimes you may notice that your air conditioner freezes up after some time of operation.

When this happens, the cool air will not be discharged properly and eventually a huge block of ice may built up on the evaporator coil. You will notice that there is less airflow coming from the air ventilation as ice began to clog the air movement. More condensation can be seen at the drain pan. At the same time, the room is no longer cool. This means that it is time to investigate the causes of this problem. Here are some possible causes. When air flow or air circulation from the unit to the room and vice versa is restricted, the exhange of thermal energy between the air conditioner and the room is restricted. As a result, most of the cool air continues to stay around the evaporator coil and fins causing the temperature around them to drop. As a result, ice is formed and gradually more ice began to built up and eventually causes the air conditioner freezes up. Air Filters at the return air of the equipment must be serviced regularly by taking them down and wash with water and soap.

These filters are used to trap dust and other bigger contaminants from going into the evaporator fins. Hence, cleaning them at least one or twice a month is highly recommended. In many cases, users will not even clean them once a year until this problem begin to surface.Evaporator coil and fins that are located after the air filters can also be clogged up due to dirty filters. cost of hvac blower motorIn this case, you will need to clean them by using a spray type coil cleaner. cleaning wall mounted air conditioning unitThe other alternative is to get the technicians to come and take down the entire evaporator for cleaning. compact wall ac unitThis will be more costly. Therefore, regular maintenance of the evaporator coil and air filters will go a long way in ensuring that your air conditioner continues to function properly.

Fan or blower at the evaporator unit may not be functioning. When the unit is on, check that there is air flow coming out of the equipment. Otherwise, the fan may be damaged. In this case, the fan motor may have burnt or some loose connections may have occurred. Get a technician to check if this is the case.Check that there is no blockage of air around the evaporator by ensuring that things are not placed too near to the evaporator.One other step you can do is to check the set temperature of the air conditioner. Make sure that it is not set lower than 70 °F. When the refrigerant in the system is low due to leakage over time, there will be a decrease in the saturation point temperature of the system. When this happens, it will take a lower temperature for all the refrigerant liquid that has been compressed by the compressor to become vapor in the evaporator. This means that the operating temperature of the cooling coils has now dropped compared to the original design. This lower temperature will cause moisture collected from the air to quickly becomes ice on the evaporator when the temperature goes below below 32 °F.

These moisture that is supposed be cooled to a level which becomes water and drips to the condensate drainage pan is now stuck at the evaporator coils and fins forming ice around them. When this continues on, eventually a block of ice is formed on it. When you see the ice being formed on the evaporator, off the unit and wait for the ice to melt. It could take a few hours for all the ice to melt. A faster way is to on the air conditioner but using Fan mode. That means, only the fan is operating but the compressor is off. This will reduce the melting time of the ice but you will need to be around to monitor it as water may overflow and cause damage to your furniture or electrical items.A low refrigerant problem can only be solved by a qualified HVAC technician as additional refrigerant will have to be added to the system. Another possible cause is when you are operating your air conditioner when the outdoor temperature outside the house is low. When this happens, try to run the air conditioner using fan mode or simply use the outside air to ventilate your room.

Back To Air Conditioner Freezes Up Home pageA window air conditioner works well in summer months in lieu of central air conditioning. While a window unit should not be a replacement for a central unit, window units do a good job of cooling off individual rooms of a dwelling. To maximize their efficiency, however, they do need some maintenance and upkeep. Window air conditioners can become extremely costly without proper maintenance and usage. Before purchasing a window unit, size the area of the room. A large unit will not always be the right fit to make a room cooler. Buying a unit that is too big will drastically decrease efficiency. An air conditioning unit has a certain amount of BTUs, or British Thermal Units, that directly correlate to the size of a room. ENERGY STAR has a recommendation of certain BTUs for certain size rooms. It does matter whether a room is heavily shaded or sunny. The BTU usage should increase by 10 percent for sunny rooms, and decrease by 10 percent for shady rooms.

ENERGY STAR also advises that one should add 600 BTUs for each person beyond two that regularly spend time in one room. Before installation, ensure that the air conditioner properly fits on the metal casing surrounding the window. Air leaks surrounding an air conditioner will decrease efficiency, and will ultimately affect the cooling of the room. If needed, use plastic to ensure that there are no air leaks. After approximately one month of use, check air conditioning window units to see if they may need some maintenance or cleaning. Three main areas regularly need attention on window units. These include the filter, the coils, and the fins. The air filters on a window air conditioning unit need cleaning often. The air filter has a design to provide clean airflow into the room, but after hours of usage, the filter becomes clogged with debris. An air filter that has a debris clog performs the opposite task of its intention. A dirty air filter will push dirty air back into the room and decrease the efficiency of the appliance.

Most air filters on air conditioning units are removable for cleaning and are reusable. Remove the front of the unit with a utility knife. Remove the filter and rinse it with warm, soapy water. If there is mold, use a bleach solution to fully clean the filter. All air filters need replacement once per season, regardless of cleaning. Air conditioning coils do not need as much maintenance as filters, but they still require cleaning once per season. Locate the coils underneath the air filter. Scrub them with warm, soapy water and a brush. Give the same attention to the coils at the back of the unit. Make it a habit to reduce debris outside, near the air conditioner. Dryer vents and drain pipes are sources of debris and can cause mold and poor air quality in the air conditioner without regular cleaning. Condensate drain channels need cleaning once per season as well. Push a solid and stiff wire through the drain channels to rid the drain of debris. Clogged drain channels leak condensation, which may cause excess moisture and staining to areas such as carpet.

The fins surrounding the coils should be straight at all times and require some cleaning. Straighten the fins with fin combs if they need realignment. If fins remain bent, they can block the airflow coming from the unit. Clean the fins with warm, soapy water at the end of each summer season. All air conditioning units need removal prior to the fall and winter months. Leaving air conditioning units in windows will allow cold air to come through during cooler weather. This will lead to expensive heating bills as well as a marked drop in heating and cooling efficiency. Store the air conditioning units in a cool, dry place when not in use. Use the basic and advanced search functions to search for the proper air conditioner that will fit your room size. Search for a seller with experience, and a long history of feedback to ensure a quality transaction. Do not be wary to ask the seller for more information about the item, especially if it is used. Keep in mind that a seller closer in proximity to you may offer better shipping options.