Okay, let’s tackle this. So Mark Mento has 30 years of experience, which is a long time. Typically, professionals with this much experience can charge higher rates. However, Mark's role as an HVAC mechanic is more on the technical side, and his experience in event planning and project management are more on the operational side. Considering his location in Avondale, Pennsylvania, and his skills, I would estimate his rate to be around $45 per hour, which is a rough estimate and may vary depending on the industry and location.