Your questions answered: HVAC FAQs. Select Comfort System Heating & Air Conditioning in West Valley 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 801-305-4777. Our experts can provide the information you’re looking for in no time.