Professional Registrations

Arizona #28474
California #M33941
Colorado #30421
Georgia #022718
Illinois #062.049843
Iowa #11883
Maryland #21669
Minnesota #16470
Missouri #019536
Montana #7953
Nebraska #E9636
Nevada #012100
New Mexico #8491
North Dakota #2825
Pennsylvania #050078E
South Dakota #3879
Virginia #0402029970
Wisconsin #28024-6

Community Associations

DSDPDowntown San Diego Partnership
SDCCSan Diego Chamber of Commerce

Colleges & Universities

SDCCD San Diego Community College District
SDSU San Diego State University * 
UCSD University of California - San Diego
USD University of San Diego

 * Mr. Hartford has served as an adjunct professor teaching an HVAC evening class, 2-days per week, for 15 weeks.

Professional Associations - Member * 

ASHE *  American Society of Healthcare Engineers
ASHRAE * San Diego Chapter of ASHRAE
ASHRAE * American Society of Heating, Refrigerating & Air Conditioning Engineers (Mr. Hartford is the Region X CTTC RVC)
ASME * American Society of Mechanical Engineers
ASPE * American Society of Plumbing Engineers
CMAA Construction Management Association of America
CSHE San Diego Chapter of California Society of Healthcare Engineers
NFPA *  National Fire Protection Association
NSPE * National Society of Professional Engineers

Business Card

Other Engineering Agencies & Associations

AHRIAir Conditioning, Heating & Refrigeration Institute
ASESAmerican Solar Energy Society
AWEAAmerican Wind Energy Association
CABSCCA Codes
CBECenter for the Built Environment (Berkeley)
CISPICast Iron Soil Pipe Insitute
DOEDepartment of Energy
Energy StarEnergy Star Label
EPAEnvironmental Protection Agency
NAIMANorth American Insulation Manufacturers Association
SD Codes City of San Diego Codes & Ordinances (currently in force)
SDGESan Diego Gas & Electric
SEPASolar Electric Power Association
SMACNASheet Metal & Air Conditioning Contractors Association
TITLE 24CA Energy Commission Standards
USGBCUnited States Green Building Council