Tip & How-To about Heating & Cooling

How to make your a/c more efficient

To save money and make your a/c last longer.clean outside coils with water hose and good cleaner at least once a year. change filter every 30days.Use thinnest filters available,not the pleated kind,as they will restrict air flow and may cause damage to your system.

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Machine sometimes makes a clicking sound. Removed front grill today and filter is very dusty and is stuck to the back. Replace filter or can it be cleaned? Other recommendations for servicing? We have lived in this rented apartment for two years and have not done any maintenance on the A/C unit.

1. Change the filter
2.Clean the "Condenser" (Outside Coil on Window Unit)
use a "foaming" spray then rinse with a garden hose.
3. Lube motor
4. Clean "Evaporator " (Inside coil) "foaming" type cleaner. Rinse with water in a spray type bottle.

Jul 10, 2011 | Heating & Cooling

1 Answer

freezing of low pressure pipe 24 BTU

A line or coil freezing is a sign of restricted air flow or low on freon. Make sure the fan that circulates the cold air is working and the filter and coil at the filter are clean. A dirty coil can be cleaned with coil cleaner and a water hose. You will need to remove the unit and take it outside. (window units only) You can buy a bottle of coil cleaner at any hardware store. Follow the instructions on the bottle but basically you spray the coil until soaked wait 5 minutes and flush it clean with water from a hose. Repeat if necessary. Try not to get water and cleaner on the controls. Be careful water will be trapped in the unit you may want to tip it toword the back for 10 minutes or so and if possible let it set outside to dry. Reinstall the unit and put a clean filter on it and give it a try. If ice forms again it is low on freon and will require a repairman to fix it. Freon is a restricted item and you have to have a license to buy it. good luck..

Aug 20, 2010 | Daewoo Heating & Cooling

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I have whirlpool magicool window ac. Now a days it is not cooling. Where the temperation blinks now a dot (.) is blinking after every 5 minutes and then ac doesnt cool - rajesh

You need to change the filter and clean the coil behind the filter. If the a/c cannot breathe it will cause the symptoms that you are describing. The coil at the front of the a/c may be clogged and the system isn't recieving thew airflow needed to keep cooling. The best way to clean this is to remove the a/c from the sleeve it is in and take it outside. Purchase a coil cleaner from a nearby home improvement warehouse and follow the directions on the can. Once you let the cleaner set take a water hose and rinse the coils off taking care not to get any of the electrical wet. I found if you use a pump sprayer to do this it works a lot better since you can guide the water easier.
Once your coils have been cleaned you let the water evaporate before returning unit to it sleeve. You should be good to go after that. Good luck on your repairs.


Sep 02, 2009 | Heating & Cooling

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