4-L Engineering Co. has served the Dallas area for over 50 years. We take pride in our technicians and dedicate time to training in both technical and customer service skills.
Our highly trained technicians are hand-picked to represent our company and are an extension of 4-L Engineering and our commitment to quality and excellence.
4-L Engineering specializes in engineering, contracting, service and service agreements on air conditioning, plumbing and mechanical systems.
Centrifugal, absorption, reciprocating, refrigeration and more
Boilers, air handlers, coils, cooling towers, pumps and more
Non-destructive testing, water analysis, building leakage and more
Repair and installation, drain cleaning, jetter services and more
Pipe Fitting, Repair and installation, welding, rigging, sheet metal and more
Due Diligence, Load Analysis, Expert Testifying, Energy Star Inspection and more