HOME SERVICES BRANDS CLIENTS ABOUT CONTACT Mechanical Contractors Committed to Service, Quality and 100% Customer Satisfaction Air Compressor Solar Hot Water, Lehua Manor Out of gallery Doonwood Engineering is your solution to all of your mechanical systems concerns. We provide innovative, high quality and cost effective installation, repair, replacement and comprehensive maintenance services. Guam Boiler Country Club Village Heat Pump, Hot Water Storage,Fans Marine Corps Base Kaneohe Vehicle Wash System Deep Well Pump © 2021 by Doonwood Engineering.