North American Technician Excellence (NATE) will offer certification testing on Feb. 7, 2005, for residential and light commercial HVAC Technicians at AHR Expo® 2005, which will be held Feb. 7-9, 2005, in Orlando, Fla. The exams provide certification in five industry specialties: air conditioning, air distribution, gas heating, heat pumps and oil heating. A morning refresher class will be given from 8:30 to 11:30 a.m., and the four-hour exam will be held from 12:30 to 4:30 p.m. The core exam and a specialty exam will be given, and both are required for certification. Examinees should pre-register at under the Forms & Data section.