HVAC Replacement Service near Westshore. After the last HVAC maintenance service, we recommended the client’s unit be replaced. I arrived at the prescheduled installation of a client’s new HVAC unit. I discarded the old unit and carefully installed the new Lennox HVAC system while checking each component for quality assurance. I double-checked the installation and tested it for performance. The new unit is working well to control the temperature throughout the home.