If your home lacks ductwork, traditional central air units require expensive remodeling work that destroys old walls. To avoid that mess, look into Ductless Mini-Split Installation in San Diego by Omega Tech Service https://fixomega.com/hvac-services/air-conditioning-services/ductless-mini-split-installation-in-san-diego/ because they deliver incredible zone control and high efficiency. This setup allows you to heat or cool individual rooms only when you use them.