We've been using One Hour Heating and Air Conditioning since early 2011 and have hired them for numerous jobs. They always do great work for us and we have never had any problems with their services. Their service techs are professional, courteous, and respectful of your property. They make sure to put booties on their feet when they walk in the house to not dirty the floors as well as cleaning up after themselves if they do leave anything. They make sure to explain options and make recommendations based on the job they are performing. They never try to upsell you on anything which is great. We are currently enrolled in their annual service so we will be using them in the future.