Mechanical Services

DDL provides complete service for all mechanical systems, serving Commercial, Industrial and Institutional markets. As your one source Service Contractor, DDL provides preventive maintenance programs, value-added services and repair for Air Conditioning, (HVAC/R); Plumbing; Fire Protection; and Building Automation. Established on the islands since 1967, we have been Hawaii’s leading Mechanical Contractor providing innovative, high quality, cost effective building solutions.
When your mechanical system needs servicing or repair work, DDL is the only call you will need to make. We provide complete mechanical service for all systems big or small, whether the service need is major infrastructure or minor work. DDL Service provides single source solutions for Air Conditioning (HVAC/R), Fire Protection, Plumbing and Building Automation.
Your Source For HVAC Service
· Predictive & Preventative Maintenance Programs
· 24 Hr Emergency Service
· Building Recommissioning and Energy Studies
· Electrical Repair & Diagnostics
· Building Automation
· Test and Balance
· Thermal Imaging Analysis
· Vibration Analysis
Types of systems we service or install:
Chillers * Boilers * Pumps * Cooling Towers * Evaporative Condensers * Package Units * Ductless Split Systems * VRF * Variable Frequency Drives * Water Source Heat Pumps * Split Systems * Computer Room Systems * Heat Exchangers * Steam Generators
Your Source For Fire Protection Service
· Fire System Analysis, Testing and Installation
Your Source For Plumbing Service
· Plumbing Service and Maintenance
· Backflow Preventer Testing and Certification
Your Source For Building Automation Service
Building Automation and Controls will save energy, improve comfort levels and enhance productivity when functioning properly, commissioned properly and properly understood by the operator. DDL Controls’ team understands how to optimize and service your Air Conditioning system and we provide the necessary training for all operators.
Our experience in new construction uniquely qualifies us to recognize and correct problems that reduce system performance, resulting in savings from your operation. We are experienced and dedicated to help you get the most from your investment by optimizing system performance and when your system is properly balanced; operating costs are reduced while comfort and productivity is improved.

Your Source For Preventive Maintenance
Our maintenance programs are designed to protect your air conditioning and cooling investment, lower your energy consumption and keep everyone comfortable. DDL preventive maintenance services create the highest economic efficiency for your building.
Our proactive and preventive maintenance programs include:
· A complete range of comprehensive preventive maintenance programs
· Customized preventive maintenance for your specific system
· Assess the current condition and provide low cost & no cost repairs & recommendations
· Keeps your system healthy, controls your cost and minimizes potential system down time