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| Cooling For Your Home |
Glossary of Terms
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AFUE
Annual Fuel Utilization Efficiency. Used to express the efficiency of gas furnaces.
The higher the AFUE rating, the more efficient the unit.
Federal law has required that all new residential furnaces built after January
1992 operate with an AFUE of 78% or higher. All RUUD® furnaces are manufactured
to exceed these requirements with a minimum AFUE of 80%.
If your furnace was built before 1992, chances are it is operating with an average
efficiency of around 60%. Most of the heat is lost up the chimney or out the
exhaust vent - devices used by older furnaces to expel dangerous fumes created
by the furnace, such as carbon monoxide, carbon dioxide, aldehydes, and even
soot.
Modern furnaces use more technologically advanced venting techniques to achieve
greater energy efficiency. An important note: Be sure to ask your installing
contractor if your chimney or exhaust vent is suitable for use with your new
equipment.
ARI
The Air Conditioning and Refrigeration Institute is an organization created by
HVAC manufacturers to ensure an acceptable level of quality within the industry.
ARI is a voluntary, nonprofit organization which publishes ratings standards
and benchmarks for testing cooling and heating products. RUUD is an active member
of ARI.
BTU
Short for British Thermal Unit. The amount of heat required to raise or lower
the temperature of one pound of water by one degree Fahrenheit.
BTUH
The heat transfer rate of HVAC equipment is measured in British Thermal Units
per Hour.
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