Dirty fins drastically decrease your cooling power and waste electricity! Clean them once every 1- 2 weeks. Use a brush with stiff plastic bristles that are 2" long to wipe down the fins. Rinse the brush in a pail of water after each swipe. Don't use soap. If your fins were knocked and have become “squished” the cooling power will be decreased - use your fingernails or a kitchen knife to straighten them
If it has been a very long time in between cleanings, they make a special foaming coil cleaner for air conditioners. It costs about $5-7 and is available at hardware stores. It can make a world of difference!
Restricted air flow can cause your AC to overheat and shut off. Regular cleaning will extend the life of the air conditioner.
Cleaning your fins: