DIY Home Improvement, Remodeling & Repair Forum > Appliances > HVAC > Cleaned AC Coils on Outdoor unit and now airflow is weak




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Old 06-16-2014, 08:44 AM  
asantodo
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Default Cleaned AC Coils on Outdoor unit and now airflow is weak

I decided that it was time to clean the coils of my 13 year old AC unit yesterday morning so I used a garden hose and washed it from the inside out as has been suggested in DIY videos and forums. Unfortunately the air flow in my house seems to have decreased significantly. I am assuming that I must have damaged the coils? Is it possible that the water pressure being too high would damage it? The fan seems to be blowing at the correct speed.



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Old 06-16-2014, 09:36 AM  
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How high was the water pressure that you used to flush the coils?



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Old 06-16-2014, 09:38 AM  
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How high was the water pressure that you used to flush the coils?
I would say it was fairly high (used the "Jet" setting on my nozzle)..do you think I damaged the coils? Can i use a fan comb to fix it?
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Old 06-16-2014, 09:41 AM  
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Can you post a pic of the fins?

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Old 06-16-2014, 09:45 AM  
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I am at work now but will try to post some tonight

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Old 06-16-2014, 09:45 AM  
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Originally Posted by asantodo View Post
used a garden hose and washed it from the inside out

Unfortunately the air flow in my house seems to have decreased significantly.
Coincidence?

Single pole of a double pole breaker in your panel has tripped?
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Old 06-16-2014, 10:33 AM  
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Are we talking about the evaporator coils or the condensor coils.
If you are referring to the condesor coils then, there is no correleation between the condensor coil and air flow.
If you are referring tot he evaporator coils then yes, you may have flattened them out thus restricting airflow. Depending on how many layers of coil fins you bent, it will be a long and tedious task to straighten them out one by one. I would not attempt a fin comb.

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Old 06-16-2014, 12:13 PM  
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Originally Posted by kok328 View Post
Are we talking about the evaporator coils or the condensor coils.
If you are referring to the condesor coils then, there is no correleation between the condensor coil and air flow.
If you are referring tot he evaporator coils then yes, you may have flattened them out thus restricting airflow. Depending on how many layers of coil fins you bent, it will be a long and tedious task to straighten them out one by one. I would not attempt a fin comb.
I believe I am referring to the condenser coils since it is on the outside unit. The evaporator coil is located in side the house correct? What would be the immediate symptoms of a damaged condenser coil?
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Old 06-16-2014, 07:48 PM  
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Here are some pics. Sorry for the quality as they were taken this evening.





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Old 06-16-2014, 07:53 PM  
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What did it look like before you started cleaning? Looks like a lot of dirt in the coil to me.



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