About Us

Dawson Mechanical Contracting, LLC has been in the plumbing, heating and air conditioning services field for over 20 years. Under the leadership of Dave Weinfeldt, Dawson Mechanical keeps pace with ever changing building and installation codes, techniques and advances in plumbing, heating and air conditioning technology.  


  • BPI Building Performance Institute, Inc., Heating & A/C Certified Envelope Analyst
  • Gastite CSST Certified
  • Registered Home Improvement Contractor 13VH00035000
  • NJ Division of Fire Safety Fire Official
  • OSHA (Occupational Safety and Health Administration) Certified
  • AC & R Safety Coalition Certified *R-410A, R-22 EPA Certified Refrigerant

*(R-410A also known as AZ-20, Suva 410A and Puron)

If you are considering oil to gas conversion in Hampton, Frenchtown, Franklin Township, Union Township, Clinton Township, the Hunterdon County area or the surrounding communities, call Dawson Mechanical (908) 464-4181 today.