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| Fig: Abu Dhabi Airport Inside |
An abbreviation, simply put, is a shortened form of a word. In writing, abbreviations are useful when you need to squeeze a lot of writing into a small space. You can also use them in place of long or cumbersome phrases to make your sentences easier to read.
Most common types of English abbreviations
- Initialism.
- Acronym.
- Shortening.
- Contraction.
HVAC Abbreviations
HVAC stands for Heating, Ventilation, and Air Conditioning, while HVACR stands for Heating, Ventilation, Air Conditioning, and Refrigeration.A - compressed air line or area
ABC - above ceiling
AC - air chamber, alternating current
A/C - air conditioning
AFF - above finished floor
AFG - above finished grade
AL - aluminum
AMB - ambient
AMP - ampere
ARR - arrangement
ATC - automatic temperature control, at ceiling
ATM - atmosphere
AUTO - automatic
AUX - auxiliary
AVG - average
BBD - boiler blowdown
BF - boiler feed
BHP - boiler horsepower, brake horsepower
BOD - bottom of duct
BOP - bottom of pipe
BOT - bottom
BP - back pressure
B & S - bell-and-spigot
BSMT - basement
BTU - British thermal unit
BV - butterfly valve
An HVAC unit heats, cools, and ventilates your home; and an AC unit only cools your home.
oC - degrees Celsius
C - condensate line
C to C - center to center
CA - compressed air
CAL - calorie
CAP - capacity
CD - condensate drain
CF - chemical feed, cubic foot
CFH - cubic feet per hour
CFM - cubic feet per minute
CI - cast iron
CIRC - circular
CL - center line
CM - centimetre
CM2 - square centimetre
CO - clean out
COL - column
CONC - concrete, concentric
CONN - connect, connection
CONT - continuation
CPVC - chlorinated polyvinyl chloride
CR - condenser return
CRW - chemical resistant waste
CS - condenser supply
CTR - center
CU - cubic
CU FT. - cubic feet
CU IN. - cubic inches
CV - check valve
CW - cold water
CWR - cold water riser
D - drain, deep
DB - dry bulb
DDC - direct digital control
DEG - degree
DELTAT - temperature difference
DET - detail
DIA - diameter
DISC - disconnect
DN - down
DP - dew point temperature
DR - drain
DWG - drawing
A Heat Recovery Ventilator is a system that exchanges the stale indoor air with fresh, outside air. During the heating season, an HRV also captures the heat from the exhausted air and transfers it to the incoming air, preheating it before it enters the home.
EA - exhaust air, each
EAT - entering temperature
EATR – Exhaust Air Transfer Ratio - to identify the amount of exhaust air transferred to inlet air in an energy recovery ventilator
E to C - end to center
EER - energy efficient ratio
EFF - efficiency
EJ - expansion joint
EL - elevation
ELB - elbow
ELEC - electrical
ENT - entering
ERV – Energy Recovery Ventilator
ESP - external static pressure
ET - expansion tank
EVAP - evaporator
EWT - entering water temperature
EXH - exhaust
EXP - expansion
EXST - existing
EXT - external
oF - degrees Fahrenheit
F - Fahrenheit
FC - flexible connector, flexible connection
FCO - floor clean out
FD - floor drain
FDW - feed water
FEC - fire extinguisher cabinet
FF - finish floor
FG - finish grade
FHC - fire hose cabinet
FLA - full load amps
FLR - floor
FM - flow meter
FO - fuel oil
FOV - flush out valve
FPM - feet per minute
FPS - feet per second
FS - flow switch, federal specs
FT - foot, feet
FTG - fitting
FU - fixture unit
FV - flush valve
G - gram, gas line
GA - gauge
GAL - gallons
GALV - galvanized
GL.V - globe valve
GND - ground
GPD - gallons per day
GPH - gallons per hour
GPM - gallons per minute
GPS - gallons per second
GR - grain
GV - gate valve
GWH - gas water heater
H2O - water
HB - hose bibb
HD - head
Hg - mercury
HGT - height
HMD - humidity
HORIZ - horizontal
HP - horsepower
HR - hour
HRV – Heat Recovery Ventilator
HTD - heated
HTR - heater
HW - hot water
HWH - hot water heater
HWR - hot water return, hot water riser
HWS - hot water supply
HWT - hot water tank
HZ - herts
The main purposes of a Heating, Ventilation and Air-Conditioning (HVAC) system are to help maintain good indoor air quality (IAQ) through adequate ventilation with filtration and provide thermal comfort.
ID - inside diameter
IN. - inch
INHg - inches of mercury
INSUL - insulation
INT - international
INTL - internal
IPS - iron pipe size
IV - indirect vent
IW - indirect waste
J - joule
K - kelvin
KG - kilogram
KM - kilometre
KM2 - square kilometre
KPA - kilo pascal
KS - kitchen sink
KW - kilowatt
L - length, liter
LAT - leaving air temperature
LB. - pound
LBF - pound-force
LIQ - liquid
LP - low pressure
LRA - locked rotor amps
LVL - level
LVR - louver
LWT - leaving water temperature
M - meter
M2 - square meter
M TYPE - lightest type of rigid copper pipe
MAN - manual
MAT - mixed air temperature
MAX - maximum
MBH - thousand British thermal units per hour
MFR - manufacturer
MG - milligram
MGD - millions gallons per day
MIN - minimum or minute
ML - milliliter
MM - millimetre
MM3 - cubic millimetre
MPT - male pipe thread
MTD - mounted
MU - make up
NA - not applicable
NC - normally closed
NEG - negative
NIC - not in contact
NO - normally open
NPHP - name plate horsepower
NPS - nominal pipe size
NPSH - net positive suction head
NTS - not to scale
O - oxygen
OA - outside air
OAT - outside temperature
OC - on center
OD - outside diameter
OED - open end duct
OF - overflow
OV - outlet velocity
OZ. - ounce
PA - pascal
PC - plumbing contractor
PCR - pumped condensate return
PD - pressure drop
PF - power factor
PG - pressure gauge
PL - plate
PNEU - pneumatic
PRESS - pressure
PROP - propeller
PRV - pressure reducing valve
PSI - pounds per square inch
PSIA - pound per square inch absolute
PSIG - pound per square inch gauge
PV - plug valve
QTY - quantity
RA - return air
RAD - radius
RAT - return air temperature
RD - roof drain
R/E - return and exhaust
RECOV - recovery
RED - reducer
REF - reference
RH - relative humidity
REQD - required
REV - revision
RL - refrigerant liquid
RLA - Rated Load Amperes
RM - room
RS - refrigerant suction
RTN - return
RV - relief valve
S - switch
SA - shock absorber, supply air
SAT - supply air temperature
SCH - schedule
SDT - saturated discharge temperature
SEC - seconds, secondary
SENS - sensible
SEP - separate
SEQ - sequence
SER - series
SERV - service
SF - service factor
SHT - sheet
SI - international systems of units
SOL - solenoid
SP - static pressure
SPEC - specification
SQ. - square
SQ.FT. - square feet
SS - stainless steel
SSH - static suction head
SST - saturated suction temperature
STD - standard
STH - static total head
STL - steel
SUCT - suction
SPLY - supply
SV - service
SVH - static velocity head
SW - service weight
SWS - service water
TD - temperature difference
TDH - total dynamic head
TEMP - temperature
TH - thermometer
THK - thick
TP - total pressure
TSP - total static pressure
UF - underfloor
UH - unit heater
V - vent, volt, volume
VAC - vacuum
VAV - variable air volume
VB - vacuum breaker
VCI - vacuum cleaning inlet
VCL - vacuum cleaning line
VEL - velocity
VERT - vertical
VIB - vibration
VOL - volume
VSD - variable speed drive
VP - velocity pressure
VTR - vent thru roof
W - watt, width, wide
WB - wet bulb
WCO - wall cleanout
WG - water gauge
WH - water heater
If you are interested to know the HVAC different words or definitions of commonly used terms in the HVAC system, then you can read another article named
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