Glossary of Heating, Ventilation and Air Conditioning Terms

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Plenum

Carries air to the different ducts which distribute it throughout the house. The plenum fits within the attic, basement, or crawl space where the fan coil unit is installed.


Programmable Thermostat

A type of thermostat that allows the user to program into the devices' memory a pre-set schedule of times (when certain temperatures occur) to turn on HVAC equipment


PurePak Air Cleaner

A patented design that replaces the standard return air box. While 4–6" pleated filters are not effective at removing contaminants smaller than three microns (such as bacteria, auto exhaust, cooking smoke, dust, or paint pigments), PurePak captures contaminants as small as 0.3 microns with 97% effectiveness.


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