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Question DetailsAsked on 10/7/2013

cleaning the exterior air condition unit

what is the cost of chemically cleaning an outdoor air condition unit?

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2 Answers


Typical power washing of an outdoor air conditioner unit is about $40-75, depending on whether you combine it with an annual servicing or catch a coupon deal.

Answered 7 years ago by LCD


Here is a how to maintain your outdoor air conditioner unit.

How to maintain your air conditioner. Regular maintenance will extend the life of your air conditioner and helps it run as efficiently as possible.

1. Safety first, unplug the air conditioner or disconnect the power.Most air conditioners have a service disconnect mounted to the home within a few feet of the condenser. (The condenser is the part of your air conditioning system that is located outside.) When you open the lid on this disconnect there should be a handle that can be pulled out and to disconnect the power supply to air conditioner. Once you have removed handle make sure to close box cover and wrap plastic or towel around it to deep it dry during the condenser washer. If you want an additional degree of safety locate A/C system breaker (usually large double breaker) inside electric panel and position it to off.

2. Remove the Top of the Air Conditioning Unit. Now that the power is off, use your hex head nut driver or screw driver to remove the bolts or screws that are mounted around the top of the condenser unit. Once these bolts are removed, the whole top will be able to be lifted off of the condenser along with the fan and motor. Do not remove the bolts that hold the fan and motor to the lid. There will also be wires attached from the motor to the side of the unit. Leave these wires attached as you do not want to involve with any electrical components. You should have enough room to swing the lid off to the side and set to stress wires or rub on anything sharp. NOTE: While performing this maintenance, it is important not to smash the fins that are wrapped around the condensing unit. These fins allow air to be pulled into the condenser. If smashed or clogged, the air cannot pass over the coils which decreases efficiency and potentially cause the unit to overheat

    Start Cleaning That A/C. With the lid removed you should now be able to easily access the inside of the condensing unit. Start cleaning by removing any debris (leaves, "helicopters", etc...) in or out of the unit that can be removed by hand. This will keep water from being trapped under leaves and such that lead to the eventual rust and breakdown of the unit's structure. Now, place a towel or plastic over the service panel disconnect area. This will not prevent all water from entering the disconnect panel. Now spray away, spray from the inside out in the unit. Remember, air is being pulled into the unit thus spraying from the outside in only forces the dirt deeper into the fins. There is no need to worry about the water. These units are made to be outside so water is a natural element to the air condenser. Just be careful not to bend condenser fins. Do not have the pressure set so high that it can bend fins. Also do not spray water directly into service disconnect everything has it limits. Once done washing out the dirt, you should be able to look through the fins or brushes and see daylight. Now you are done remount the lid onto the air conditioner's condensing unit, and install disconnect and turn breaker back in on position.

    Change Your Air Filter. Spring is a great time to replace that air filter. It is likely that this is the time of year your filter is the dirtiest. Air conditioning is very finicky and sensitive to air flow. If the filter is clogged, your fan will have to work much harder and the evaporator coil is likely to freeze solid. This is not good, causes a mess and ultimately renders the A/C system useless.

Clean the A/C drain every year. Nasty deposits do build up in this line which could lead to blockage. So, next you will need to locate the “A” coil compartment (inside the house on top of furnace) PVC (white pipe) drain. Some drains have cleanout that can be opened from the top if yours does you can pour a cup full of Simple Green or vinegar (either work) and are environmentally safe. NOTE: The “A” coil compartment drain if plugged can has caused problems. Furnace heat exchanger corrosion. High humidity levels in the house.

Hope this helps someone


Answered 6 years ago by rtpropertyinspection

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