Ernesto came out to change my electronic filter which he did. Our gardener has a habit of blowing leaves and dirt toward our air conditioner when he takes care of our landscaping. I asked Ernesto to look at the coil - and it was quite clogged with dirt. I asked Ernesto to please clean and rinse the coil with solvent which he gladly did. A little more dirt and our new air conditioner would have been kaput! Thank you.