After my husband and I realized that our furnace needed to be replaced, we decided to try to do the work ourselves. Since we were both good at fixing things around the house, we figured that a little HVAC ventilation wouldn't be a big deal. Boy, were we wrong. After about twenty minutes, we realized that we were in way over our heads. We didn't understand how to connect hoses and put our system in line with the rest of our HVAC work, so we called in an expert. Our HVAC expert finished the job, and our heater worked splendidly after it was finished. Check out this blog to learn why you should always contact a professional.