Dorvin D. Leis Co., Inc.
Dorvin D. Leis Co., Inc.

Hawaii's Premier Mechanical Contractor Since 1967

Our Services

Mechanical Services

Mechanical Services

Service Department

At DDL, we provide mechanical service for all systems big or small, whether the service needed is major infrastructure or minor work. We’re your one stop shop for single source solutions for Air Conditioning (HVAC/R) and Plumbing. We offer flexibility for inspection, time and materials, full labor service, and full coverage service contracts. The service department is comprised of dependable, knowledgeable, and skilled technicians who pledge to solve your problems.

Emergency Service: 24/7/365

Our technicians are committed to providing emergency service and repair work for any mechanical building systems problems. As your number one source for emergency service, we are always on the go around the clock, every day of the year to keep your systems up and running!

  • All islands – (808) 877-4040
Mechanical Services

Preventive Maintenance

Our maintenance programs are designed to protect your air conditioning and cooling investment, lower your energy consumption, and keep everyone comfortable in Hawaii’s tropical climate. DDL’s preventive maintenance services create the highest economic efficiency for your building.
We offer:

  • A complete range of comprehensive preventive maintenance programs
  • Customized preventive maintenance for your specific system
  • Assessment of the current condition and provide low cost/no cost repairs and recommendations

We strive to keep your system healthy, control your costs, and minimize potential system down time.

Our services include:

  • Predictive and preventive maintenance programs
  • 24 hour emergency service
  • Building recommissioning and energy studies
  • Electrical repair and diagnostics
  • Building automation
  • Test and balance
  • Plumbing service and maintenance
  • Backflow preventer testing and certification

Types of systems we service/install include:

  • 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