My central vacuum system had never worked particularly well, and the manufacturer had suggested that it might not have been installed correctly. As it was no longer under warranty, I decided to hire a vacuum specialist to look at the installation. Mr. Rickman examined the system, and pointed out the problems with the installation, which were in fact quite different and much simpler than what the manufacturer had speculated from my description over the phone. He pointed out leaks and pipes that had been incorrectly installed. He discussed various options with me, and made recommendations for changes that would improve the unit's performance. His pricing seemed very reasonable, and he returned two weeks later with a helper and performed the work. The system is working significantly better now.