Homeowner's Guide To Expert AC Maintenance: Part 2 Published on April 21, 2017 We previously brought you part one of our series The Homeowner’s Guide to Expert AC Maintenance. Today Knochelmann Service Experts Heating & Air Conditioning is back with part two in our series where a certified technician explains what to expect when you purchase an air conditioning tune-up to help homeowners get the most out of their investment. Back To BlogContact Us