Your questions answered: HVAC FAQs. Woody's Sudden Service Inc in Manassas Park can answer all your HVAC-related questions. Before you get on the phone, browse these to see if we already responded to your question online. If you don’t see your question in this list or want more information on a particular topic, give us a call at 703-369-5528. Our techs can offer you the information you’re looking for in no time.