Should You Paint Your Air Conditioner?

Should You Paint Your Air Conditioner?

If you’re worried about your air conditioner rusting or corroding, then a coat of rust-proof paint can help prevent it. However, painting your air conditioner isn’t as simple as it sounds. If you apply the paint poorly, it can end up causing more problems. Let’s take a look at why, and what you can do about it.

The Faraday Cage Effect

The Faraday Cage Effect is a somewhat complicated phenomenon in the field of electromagnetism. The upshot is, when spray painting your air conditioner, it can be difficult to get full coverage, particularly on the inside, as the paint has a hard time sticking in corners and recessed areas.

This might not seem like that big of a problem, but if you have a few small areas of exposed metal, while the rest of the unit is painted, those areas will end up corroding much more quickly than if the entire unit was simply left unpainted to begin with.

Other Painting Problems

Rust-proof paint is a preventative measure, not a cure. If your A/C is already showing signs of rust or corrosion, you’ll need to remove the rust first, before applying the paint. If you want to make sure the job is done properly, talk to your HVAC technician. Ask them to look for signs of corrosion, and if they think painting is a necessary precaution. Then, if they do recommend it, they can do the painting for you, making sure the job is performed properly, to give you full protection.

Also remember, painting only works if the corrosion is still in its early stages. If there’s more than just a little surface rust, then there could be damage to the inner workings of your system, which can’t be simply removed and repainted. Especially if your unit is getting older, you’re better off replacing it with a new system, rather than attempting a DIY paint job that could end up doing your A/C more harm than good.

For help painting your air conditioner, contact us at Aggressive Mechanical Contractors. We’ve proudly served Monmouth and Ocean Counties’ HVAC needs since 1948.

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