General
T&M
What is Time and Material?
AHU
What is an Air Handling Unit?
GPM
What are Gallons Per Minute?
R-
What is Refrigerant- (prefix)?
or
[Thermal] Resistance Value [R-Value]?
BAS
What is a Building Automation System?
OEM
What is an Original Equipment Manufacturer?
LCU
What is Light Commercial Unitary?
VFD
What is a Variable Frequency Drive?
VRF
What is Variable Refrigerant Flow?
VAV
What is Variable Air Volume (or Valve)?
T&B
or
TAB
What is Test and Balance?
CFM
What is Cubic Feet per Minute?
ΔT
or
Delta T
What is temperature differential (or difference in temperature)?
RMS
What is the Refrigerant Management System?
BACnet
What is a Building Automation Control Network?
IOM
What is an Installation, Operation, and Maintenance (manual)?
WSHP
What is a Water Source Heat Pump?
CTV
What is a CenTraVac chiller?
DX
What is Direct Expansion?
VAS
What is a VAV Air System?
IAQ
What is Indoor Air Quality?
ERV
What is an Energy Recovery Ventilator?
DPS
What is a Differential Pressure Switch?
EXV
What is an Electronic Expansion Valve?
WCI
What is a Wireless Communications Interface?