A Filter Drier is an important part of an air conditioning system. A Filter Drier is so important that manufacturers normally supply one to install with a new home comfort system. Filter driers in refrigeration and air conditioning systems have two purposes.
1. Absorb system contaminants, such as water, which can create acids.
2. Provide physical filtration.
What does your drier look like? For some reason, the "Other Guys" install the filter drier outside in the elements. If you live in Florida a coastal area with high salt content in the air, then you are aware of why installing one outside is a bad idea. Another major contributor to accelerated corrosion and rusting is sprinkler systems. Many sprinkler systems are fed from a well or reclaimed water which has higher mineral content and increases the rate of corrosion on metals. If you find your sprinkler system is making contact with your air conditioner, we recommend either redirecting or removing the sprinkler.
If you notice it’s rusting, you should have your service or maintenance technician scheduled for a system Check-Up. They will be able to provide you with options to extend the life of your system.
A Filter Drier will eventually rust through and leak refrigerant out your air conditioner and could cause permanent damage to other components like the compressor. Refrigerant can cost anywhere from $39 to over $110 per pound, depending on what type of refrigerant your system uses. The average residential air conditioner system can hold around 7 to 10 lbs of refrigerant. That could cost you over $1,000 just for the refrigerant on top of the actual repair cost!
If your Filter Drier is rusted heavily your technician will most likely recommend replacing it as a preventative measure. This option will allow you to take care of the repair before more expenses and a breakdown occurs. In some installations, the filter drier can be moved to the indoor unit away from the outdoor elements to prevent it from rusting.