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4-L Services
Air Conditioning and Plumbing
Leaders in Engineering, HVAC, and Plumbing Services for Commercial and Residential Buildings
4-L offers a wide array of services in heating, air conditioning, plumbing and mechanical. In every department, we bring an engineering approach with layers of supervision and oversight from managers and highly qualified engineers. Our core services are broken down into the following primary categories: Primary Equipment, Secondary Equipment, Testing, Plumbing Services, Mechanical Services, Preventative Maintenance and Engineering Services. More information on our services below.
Primary Equipment
Centrifugal • Screw / Rotary • Absorption • Reciprocating • Packaged Units • Refrigeration • Cryogenic Freezers • Ultra-Low Temp Chambers • Air Compressors
Secondary Equipment
Boilers • Air Handlers • Vane Axial Fan • Speed Controls • Coils • Cooling Towers • Pumps • Controls • Air Compressors • Filters • House Pumps
Testing and Preventative Maintenance
Eddy Current Testing • Vibration Analysis • Oil Analysis • Refrigerant Analysis • Lithium Bromide Analysis • Water Analysis • Electrical Analysis • Overload Relay Testing • Thermography • Failure Analysis • Log Analysis • Laser Alignment • Sewer Gas Pressure Monitoring • Building Leakage • Duct Leakage • Plumbing Leakage • Balance Domestic Water System
Plumbing Services
Repair / Installation • Drain Cleaning • Jetter Services • Camera Inspection / Recording • Line Locater • Smoke Testing • Backflow Service • Sewage Ejectors • House Pumps • Grade Evaluating • Disinfecting Domestic Water Systems
Mechanical Services
Repair / Installation • Pipe Fitting • Welding • Rigging • Sheet Metal • Air/Water Balancing • Carbon Dioxide / Monoxide Control • Refrigerant Planning
Engineering Services
Due Diligence • Load Analysis • Expert Testifying • Energy Star Inspection • Life Expectancy Evaluation • Oncor's Energy Program • Retrofit Design
Company Information
TACLA004772C / M-40869
Regulated by the Texas Department of Licensing and Regulation・P.O. Box 12157・Austin, TX 78711・(800) 803-9202 www.tdlr.texas.gov
Regulated by the Texas State Board of Plumbing Examiners・P.O. Box 12078・Austin, TX 78711・(800) 845-6584 www.tsbpe.state.tx.us
Master Plumber: Charles Womack, M-40869
Contact Us
Contact 4-L for precision air conditioning and plumbing services in Dallas, TX