The DOE’s proposed rule represents a significant increase in efficiency that would effectively eliminate noncondensing furnaces and significantly impact the design, installation, and cost of nonweatherized furnaces.
Terminology talk at the AHR Expo focused on variable-speed compressors, electronically commutated motors (ECMs), and variable-capacity systems as well as diagnostics and troubleshooting tools for contractors.
All correct answers will be entered into a drawing. The winner will receive a Fieldpiece LT-17A digital multimeter. The answer to this riddle, and the next HVACR Service Ticket column, is scheduled to appear in a June 2015 issue of The NEWS.