Planned Service Tune Up Openings 1. Check when we will be in Your Area. (Time colors match map areas.) 2. Check for a listed time frame opening. (If your A/C uses 410A Refrigerant, temp must be over 70 degrees.) 3. Enter dates and times that will work for you in the first and second choice spaces on the scheduling form. 4. If no openings work for you, click here to send us an e-mail to look for acceptable time frame.