Your questions answered: HVAC FAQs. Air Unlimited Heating & Cooling in Liberty and the Kansas City Metro Area can answer all your HVAC-related questions. Before you get on the phone, look to see if we already responded to your question online. If you don’t see your question on the list or want more information on a topic, give us a call at 816-286-7258. Our experts can provide the information you’re looking for in an instant.