WDF Inc. is one of the nation’s leading plumbing, HVAC , Fire Protection and specialty general contracting companies. WDF Inc. has worked with the nation’s leading owners, general contractors, architects and engineers on many significant construction projects including high rise construction, waste water treatment plants, educational facilities, transportation systems and infrastructure projects. Our projects serve the private and public sector markets. Our staff of experienced executives will spearhead the assault on the new work with support from a well trained management team.