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  1. Residential HVAC Forum
    Hi, I have a C20 license (WARM-AIR HEATING, VENTILATING AND AIR-CONDITIONING) and I own a business thats doing just that. I now want to expand my business and have a secondery business which will deal with air duct cleaning. Can the other business work under the same license? If not, what are...
  2. General HVAC Discussion
    I am an Instrumentation and Controls Technician working for a major power company. I (along with three other technicians) were forced by my supervisor and his manager to get my universal refrigeration license. We were under the impression that we would be repairing HVAC units around the plant...
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