have you been contacted by hvacshopdrawings.net aka Patrick McKenna? we are a legitimate drafting firm that has professional association affiliations and networkties with many other professional detailers and drafting firms in the industry. hvacshopdrawings.net has made it their business to steal copyrighted material from professional sites, lift samples from real detailer and drafting sites and respresent them their work by changing a title block and adding their logo to the drawing. contractors rely on professional drafting firms in a very significant way to help them resolve conflicts with structure and other trades. most professional draft persons have spent a lifetime of learning and dedication to the profession so as to be able to provide high quality service to clients. hvacshopdrawings.net is not one of those companies. if you have been ripped off by them as a detailer, let the community know. if you have hired them, chances are you have also hired a professional drafting company to fix their work. buyer beware when it comes to hvacshopdrawings.net - that 20-30% lower price than any other drafting firm comes at a price when you have to do the job twice to get a professiional result.