DIAGNOSTICS
DIAG 6 ASHI, BPI, NATE, RESNET
Diagnosing High Efficiency Gas Heating
Systems
Gas fired appliances have come a long way from the old converted gravity coal systems of yesterday. This session will cover the advances in warm air residential heating
appliances over the years, how to identify them, diagnose repairs when they (sometimes) don’t work, and some tips regarding set up and maintenance. This
session will be good for beginning and intermediate field technicians. (This session is a repeat of the AC session
offered in ’03 and ’04 with updates.)
By attending this session, participants will
1. Identify the similarities and differences between older gas fired furnaces and new high
efficiency units
2. Be able to diagnose problems with high efficiency furnaces
3. Learn to communicate with a heating contractor better when there are problems with this
type of furnace