Preventing A Freon Leak

When your AC repair man tells you that you have a Freon leak you can almost certainly say RIP to your air conditioner. A Freon leak in the HVAC world is comparable to terminal cancer you can keep spending money on Freon to keep your AC going but eventually your air conditioner will pass away. The Evaporator Coil is without a doubt the most common place to develop a Freon leak. Your Evaporator Coil is located in the indoor unit aka the air handler. The purpose of Your Evaporator Coil is to change your Freon from liquid to gas and then your blower fan will spread that cold temperature throughout the home. The cooling process creates condensation on the coils thus causing them to rust out and develop a Freon leak. Today I’m going to share a secret with you to stop or prevent this from happening to your AC or furnace.

What Your Coils Are Supposed To Look Like.


Rheem Evaporator Coils
Goodman Evaporator Coils

What Your Coils Are Not Supposed To Look Like.

Goodman Evaporator Coil With Leak


Goodman Evaporator Coil With Leak

How To Prevent Or Stop Evaporator Coil From Rusting Out

There is one method that is tried and true in the HVAC industry to Stop and Prevent your coils from rusting out and developing a Freon leak and that is Galvanizing Spray.

Galvanizing Spray is is an organic, single-component zinc coating with a minimum 92% (weight) zinc in the dry layer that cures on your Evaporator Coils and seals them without out doing any harm or damage to your AC system. The best part is It’s cheap and easy to apply.

Order Galvanizing Spray

Applying Galvanizing Spray

Estimated Job Time: 5-10 min.

Difficulty: Very Easy

First turn off your air conditioner at the breaker panel

Remove the screws from the front of the air handler.

hvac repair tips

Galvanizing Spray is applied just  like a paint so cover the entire face of the coils where the copper and metal are, DO NOT spray the aluminum fins.

Before: Rheem Evaporator Coil With Leak



Let dry and replace the air handler panels and fasten the screws as well as restore power at the breaker panel .

Repeat This Process Twice A Year!

3 Replies to “Preventing A Freon Leak”

  1. More great information! This makes sense, and I would assume that this will help prolong the life of the HVAC unit? Are the aluminum fins right there with the coils? Is it okay to get spray on anything but the fins? I ask this because it is a spray. Is this used only when you start to see rust, or can it be used as a preventative, while the HVAC still looks in good condition.

  2. This is a great tip! I am always looking for cheap easy prevention for expensive systems. The copper is definitely the weakest link in the system. What a great Fix

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