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4-L Engineering Co.

4-L Engineering Co. is a quality mechanical and contracting company based in Richardson, TX specializing in Engineering, Contracting, Service and Service Agreements on Air Conditioning, Plumbing and Mechanical Systems.

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(972) 276-5088

420 N Dorothy Dr, Richardson, TX 75081

Office Hours M-F 8:00am - 5:00pm

Service Hours 24/7 Year Round

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4-L Engineering Co.

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