Q: My children have allergies, so I vacuum clean often. I notice the lights dim when I first start the machine. Would a central vacuum system be more efficient than my canister model and should it ...

Dear Jim: My children have allergies, so I vacuum often. I notice the lights dim when I first start the cleaner. Would a central vacuum system be more efficient than my canister model and should it ...

A new generation of central vacuum cleaners -- built-in systems with a central power unit and a network of pipes running through the walls of the house -- are being touted by manufacturers as more ...