Several manufacturers are looking to challenge the ubiquitous furnace by offering a different option: the hydro-air system, which they claim is a cleaner, more efficient, and more comfortable alternative to conventional 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.
Bob and Tim have been sent on a routine service contract call to a new customer. The system is a gas furnace with central air conditioning. After changing the filter and oiling the fan motor, Tim went to the thermostat and caused the furnace to come on and they were looking at the burner when Tim said, “That gas flame doesn’t look right.”
The manufacturing division of the Heating, Refrigeration, and Air Conditioning Institute of Canada (HRAI) reports that ductless split systems shipments were up 30 percent in the fourth-quarter of 2011 when compared to 2010.