100+ HVAC Acronyms And Abbreviations At One Place: Collective Guide

Yes, We understand your excitement if you belong to the industry like Heating, ventilation, and air conditioning (HVAC) then this must be a golden piece for you, just because here we collect more than 100+ acronyms and abbreviations related to HVAC…no no we say HVAC: Heating, ventilation, and air conditioning, why use the short form when the whole post is about abbreviations. 😛 😛

So here we go with the list from A to Z. Final scope tries to collect almost all but we are always welcome if you suggest some more or if we missed out any. So now have a look and hit the comment section if you have any abbreviations related to HVAC in your bucket.

A

A  compressed air line or area
ACAir Conditioning
ACDAutomatic Control Damper
ACHAir Changes per Hour
ACMAsbestos Containing Material
ADAccess Door
AEEAssociation of Energy Engineers
AFAir Foil
AFDAdjustable Frequency Drive
AFUEAnnual Fuel Efficiency Ratio
AHUAir Handling Unit
AIAnalog Input
AMPAmpere
AOAnalog Output
APAccess Panel
APDAir Pressure Drop
ASAir Stream
ASHRAEAmerican Society of Heating Refrigeration and Air Conditioning Engineers
ATCAutomatic Temperature Control
ATMAtmosphere

B

BBoiler
BACnetA Data Communication Protocol for Building Automation and Control Networks
BASBuilding Automation System
BCABuilding Commissioning Association
BDDBack-Draft Damper
BHPBrake Horsepower
BIBackward Incline
BOBinary Output
BODBottom of Duct
BSLNBaseline
BTUBritish Thermal Unit
BTUHBrtish Thermal Units / Hour
BYBase Year

C

CAVConstant Air Volume
CDCold Deck
CDDCooling Degree Days
CEMCertified Energy Manager
CENTCenter or Centrifugal
CFCubic Feet
CFCChloroFluoroCarbon
CFMCubic Feet per Minute
CHChiller
CHWChilled Water
CHWPChilled Water Pump
CHWRChilled Water Return
CHWRTChilled Water Return Temperature
CHWSChilled Water Supply
CHWSTChilled Water Supply Temperature
CLFCooling Load Factor
CLTDCooling Load Temperature Difference
COCarbon Monoxide
CONNConnection
COPCoefficient Of Performance
CRACComputer Room Air Conditioner
CTCooling Tower
CTBDCooling Tower Blow Down
CUHCabinet Unit Heater
CVConstant Volume
CVRMSECoefficient of Variation of the Root Mean Square of the Error
CWPCondenser Water Pump
CWRCondenser Water Return
CWRTCondenser Water Return Temperature
CWSCondenser Water Supply
CWSTCondenser Water Supply Temperature
CYCurrent Year

D

DDrain
DADischarge Air
DBData Base
DCDirect Current
DCVDemand Controlled Ventilation
DDDegree Day
DDCDirect Digital Control
DEGDegree
DHDuct Heater
DIDigital Input
DIADiameter
DIMDimension
DODigital Output
DPDew Point
DXDirect Expansion

E

EAEach or Exhaust Air
EAHUExhaust Air Handling Unit
EATEntering Air Temperature
ECMElectronically Commutated Motor
ECOEnergy Conservation Opportunity
EDHElectric Duct Heater
EEMEnergy Efficiency Measure
EEREnergy Efficiency Ratio
EFExhaust Fan
EHElectric Heater
EMEREmergency
EMSEnergy Management System
ESCOEnergy Service Company
ESPExternal Static Pressure
ETExpansion Tank
EUHElectric Unit Heater
EWTEntering Water Temperature
EXH or EXExhaust
EXPExpansion
EXTExternal

F

FFahrenheit
FAFree Area or Fire Alarm
FCForward Curve
FCUFan Coil Unit
FDFloor Drain, Fire Damper, or Fire Department
FIMFacility Improvement Measure
FLAFull Load Amps
FLEXFlexible
FLRDRFloor Drain
FMSFacility Management System
FPMFeet Per Minute
FPSFeet per Second
FRPFiberglass Reinforced Plastic
FSFlow Switch
FTFeet
FTRFin Tube Radiation
FWFeed Water

G

GGas
GAGauge
GALGallons
GALVGalvanized
GFUGlycol Feed Unit
GPHGallons per Hour
GPMGallons Per Minute
GRGrade
GUIGraphical User Interface

H

HBHose Bib (Connection)
HCFCHydrochlorocfuorocarbon
HDHot Deck
HDDHeating Degree Days
HEPAHigh Efficiency Particulate Arresting
HFCHydroFluoroCarbon
HHVHigher Heating Value
HHWPHeating Hot Water Pump
HHWRHeating Hot Water Return
HHWSHeating Hot Water Supply
HLHigh Limit
HPHorsepower or High Point
HPSHigh Pressure Steam
HRHeat Recovery
HRUHeat Recovery Unit
HRVHeat Recovery Ventilator
HSPFHeating Seasonal Performance Factor
HTGHeating
HVACHeating Ventilation and Air Conditioning
HWPHot Water Pump
HWRHot Water Return
HWRTHot Water Return Temperature
HWSHot Water Supply
HWSTHot Water Supply Temperature
HXHeat Exchanger
HZHertz (Cycles per Second)

I

I/OInput Output
IAQIndoor Air Quality
IDInside Diameter
INInches
IPMVPInternational Performance Measurement and Verification Protocol
IRInfra-Red

K

KWKilowatt

L

LATLeaving Air Temperature
LBPound
LDLinear Diffuser
LFLinear Feet
LHVLower Heating Value
LLLow Limit
LONLocal Operating Network
LPLow Pressure
LPSLow Pressure Steam
LRALocked Rotor Amps
LUVR or LVRLouver
LVDRLouvered Door
LVGLeaving
LWBTLeaving Wet Bulb Temperature
LWTLeaving Water Temperature

M

M&VMeasurement and Verification
MAMixed Air
MATMixed Air Temperature
MAXMaximum
MBH1000 BTUH
MCAMinimum Circuit Amps
MCCMotor Control Center
MDMotorized Damper
MECHMechanical
MINMinimum
MUMake-Up Water
MUAMake-up Air Unit
MXMetrix Utility Accounting System
MZMulti-Zone

N

NCNormally Closed
NEMANational Electrical Manufacturers Association
NONormally Open
NOMNominal
NPSHNet Positive Suction Head

O

OAOutside Air
OAIOutside Air Intake
OAPOutside Air Percentage
OATOutside Air Temperature
OCOn Center
ODOutside Diameter
ODPOpen Drip Proof
OVOutlet Velocity
OWSOperator Work Station

P

PCPerformance Contracting
PCFPounds per Cubic Foot
PDPressure Drop
PEProfessional Engineer
PHPre-Heat
PIDProportional Integral Derivative
PRVPressure Relief Valve
PSIPounds per Square Inch
PSIAPounds per Square Inch – Absolute
PSIDPounds per Square Inch – Differential
PSIGPounds per Square Inch – Gauge
PTACPackaged Terminal Air Conditioner
PVCPolyvinyl Chloride

R

RRadius
RAReturn Air
RETReturn
RFReturn Fan
RHReheat
RLARunning Load Amps
RLFRelief
RPMRevolutions Per Minute
RTDResistance Temperature Detector
RTURoof Top Unit

S

SASupply Air
SATSupply Air Temperature
SCShading Coefficient
SCRScreen
SCTSaturated Condensing Temperature
SDSmoke Detector or Smoke Damper
SESmoke Exhaust
SEERSeasonal Energy Efficiency Ratio
SENSensible
SFSupply Fan
SFDCombination Smoke / Fire Damper
SHCSensible Heat Capacity
SHFGSolar Heat Gain Factor
SHRSensible Heat Ratio
SPSet Point
SSStainless Steel
SUPSupply
SWPSteam Working Pressure

T

TTemperature
TEFCTotally Enclosed Fan Cooled
TEMPTemperature
TEVThermostatic Expansion Valve
TODTime Of Day
TON12,000 BTUH (Cooling Capacity)
TORRMillimeter of Mercury (mmHg)
TSPTotal Static Pressure
TSTATThermostat
TXVThermostatic Expansion Valve
TYPTypical

U

UCUndercut (Door)
UHUnit Heater
UVUltraViolet

V

VVolts
VAVVariable Air Volume
VDVolume Damper
VELVelocity
VFDVariable Frequency Drive
VSDVariable Speed Drive
VSPVariable Speed Pump(ing)

W

WBWet Bulb
WCWater Column
WGWater Gauge
WPDWater Pressure Drop
WTDWater Temperature Difference

Y

YTDYear To Date

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