We are making a major contribution to Earth Day this year...new air condintioner units! We will be going from two, fifteen year old, 10 SEER units to one 16 SEER and one 15 SEER unit. We are hoping for much increased efficiency and lower bills! As you can see the old ones are a little rough. One of them was making some heart-stopping (this is Texas...it's heart stopping when you have no A/C in August!) noise at the end of last summer. I'm not sure what it means that I'm so excited to be getting new A/C units...could this be a statement about my age, I wonder?