Pet and central AC units

[Sam Leon]

If you are wondering what pets do to the central AC units, here is something a little more than just speculation.

I have a triplex, where each unit has the same exact central AC handlers and condensers and same age.

December 2014, I had an air conditioning company cleaned all three evaporator coils - pulled the coils out and acid wash them.

Here is a picture of what the coil looked like immediately after the cleaning.

I personally change the filter in all three units once a month.

Now, only eight months later, units 1 & 2's coils look about the same with just a little more dust.

Unit 3's coil look like this.

Same size apartment, same central AC units, same age, all cleaned at the same time, had filter changed by me every month at the same time.

The only difference is unit 3 has two dogs, one 40 pounds and one 50 pounds.

I am not against pets, but thought I would share this.