With Hawaii’s tropical climate, DDL seeks to provide thermal comfort, acceptable indoor air quality, and reasonable installation, operation, and maintenance costs for all HVAC systems. DDL provides mechanical services for both small and large projects and has worked in a variety of settings including residential high rises, townhouses, hospitals, hotels, schools, office buildings, laboratories and many others. In each case, work and services were customized to the needs of the customer. We are able to work on a wide range of projects from large fast paced multi-million dollar projects to simple repairs. Renovations, new construction, upgrades, emergency repairs, we do it all.