I've done a lot of business with Go Green Express over the years (new furnace, new AC condenser, new hot water heater and--today--the installation of a water softening & filtration system.). The company is not the cheapest you can find, but they're very good. Their technicians are knowledgeable, competent, and courteous people. They offer sensible maintenance programs. They carry good brands and their installations are well designed and thoughtful. I recommend this company wholeheartedly to anyone who is upgrading their home's HVAC systems and wants the job done right.