Mar Vista, CA Heating & Air Conditioning Service

The post-war tract homes in Mar Vista were built around one central return and a shallow attic, so a straight equipment swap without opening up that return and swapping out flattened flex duct just moves the same airflow problem to a newer unit. Where a rear addition was tacked onto the original duct trunk, we typically size a dedicated ductless head for that room rather than chase it with more capacity everywhere else. Morning marine layer is reliable enough here that peak cooling loads stay moderate most of the season, but the moisture it brings still has to factor into unit sizing rather than get treated as a footnote. That same ocean air pushes salt a few miles inland, so we spec coated coils and hardware that hold up better than uncoated parts do closer to the valleys.