My central vacuum broke and Danny's came out to take a look at it. They told me that my old one could be fixed, but would require yearly repairs that would cost more than a replacement within five years. They installed a new canister in that same visit, provided me with all new attachments and hoses, and even provided some advice on how to achieve ideal suction depending on surface material. They have been out twice to help with clogs -- and this is my only reason for not giving them the 10 stars. I haven't had anyone else in, but my old vacuum never had any clogs, and I'm not sure why this one does...
Great, fast installation and clean up.