How to Protect your AC from Rust and corrosion

How to Protect your AC from Rust and corrosion
4 min read
14 November 2023

Corrosion is a chemical process that can damage any metal, including the coils and fins of your air conditioner. It is caused by exposure to moisture and oxygen and can be accelerated by salt air, acid rain, and other environmental factors.

Corrosion can have a number of negative consequences for your air conditioner. It can reduce efficiency, shorten lifespan, and even lead to failure. That's why it's important to take steps to protect your AC from corrosion.

Tips to Protect AC from Rust and Corrosion

1. Keep your AC clean

Dirt and dust can build up on the coils and fins of your AC, blocking airflow and trapping moisture. This can create a perfect breeding ground for corrosion.

To clean your AC, start by turning it off and disconnecting the power. Then, use a soft brush to remove any loose dirt and debris. You can also use a vacuum cleaner with a soft brush attachment.

Once you've removed the loose dirt, use a mild cleaning solution to clean the coils and fins. Be careful not to use any harsh chemicals, as these can damage the metal.

Once you're finished cleaning, be sure to rinse the coils and fins thoroughly with water. Then, dry them off with a clean cloth.

2. Apply a protective coating

Once your AC is clean, you can apply a protective coating to help shield it from corrosion. There are a number of different types of coatings available, including epoxy, urethane, and silicone.

Choose a coating that is specifically designed for air conditioners and that is resistant to the environmental factors that your AC is exposed to.

To apply a protective coating, start by cleaning your AC as described above. Then, follow the instructions on the product label.

3. Install a UV-resistant cover

If your AC is exposed to direct sunlight, consider installing a UV-resistant cover. This will help to protect the metal coils and fins from the sun's harmful rays.

UV-resistant covers are available in a variety of sizes and styles, so you're sure to find one that fits your AC.

4. Inspect your AC regularly

It's important to inspect your AC regularly for signs of corrosion. If you see any rust or other damage, be sure to have it repaired by a qualified HVAC technician.

Here are some additional tips that you can follow to help protect your AC from corrosion:

  • Avoid placing your AC in a damp or humid environment.
  • If you live in a coastal area, choose an AC that is designed to withstand salt air.
  • Keep your AC's drain line clear to prevent water from pooling around the unit.
  • Have your AC serviced by a qualified HVAC technician at least once a year.

By following these tips, you can help protect your AC from corrosion and extend its lifespan. This will save you money on energy bills and repairs in the long run.

What to do if your AC is already corroded

If you find that your AC is already corroded, there are a few things you can do:

  • Remove the rust. You can use a wire brush or a commercial rust remover to remove the rust from the coils and fins.
  • Apply a protective coating. Once you've removed the rust, apply a protective coating to help shield the metal from further corrosion.
  • Call a qualified HVAC technician. If the corrosion is severe, you may need to have your AC repaired or replaced by a qualified HVAC technician.

By taking these steps, you can help to extend the lifespan of your AC and ensure that it continues to operate efficiently.

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Psbair 2
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