My husband is very particular and has an engineering background. He equiped himself with knowledge and set out to investigate who would complete our work installing a heating system and air conditioning system and going from 2 to 3 zones. He felt Air Professionals were at the top of his list and I have to say we are pleased with the results and are saving money too. They have always been very professional and trustworthy. They will take the time to explain everything and seem to work diligently when they are here. We have had them come several times for season start ups ever since. We would highly recommend them.