For perfectly mixed air or laminar flow spaces, this is equal to the number of times per hour that the volume the space is exchanged by mechanical and natural ventilation. – Cubic inches CUH – Cabinet Unit Heater CV – Check valve CW – Cold water CWR – Condenser Water Return, cold water riser CWS – Condenser Water Supply D – Drain, Deep DB – Dry Bulb {Reference to Temperature} DDC – Direct Digital Control DEG – Degree DELTAT – Temperature difference, Delta Temperature DET – Detail DIA – Diameter DIM – Dimension DISC – Disconnect DN – Down DP – Differential Pressure, Dew point temperature DR – Drain DWG – Drawing E to C – End to center EA – Each, Exhaust Air EAHU – Exhaust Air Handling Unit EAT – Entering Air Temperature EATR – Exhaust Air Transfer Ratio EER – Energy efficient ratio EF – Exhaust Fan EFF – Efficiency EJ – Expansion joint EL – Elevation ELB – Elbow ELEC – Electrical EMER – Emergency EMS – Energy Management System ENT – Entering ERV – Energy Recovery Ventilator ESP – External Static Pressure ET – Expansion Tank EUH – Electrical Unit Heater EVAP – Evaporator EWT – Entering Water Temperature EXH / EX – Exhaust EXP – Expansion EXST – existing EXT – External F – Fahrenheit FA – Free Area, Fire Alarm FC – Flexible Connection, flexible connection FCO – Floor clean out FCU – Fan Coil Unit FD – Floor Drain, Fire Damper, Fire Department FDW – Feed water FEC – Fire extinguisher cabinet FF – Finish floor, FG – Finish grade FHC – Fire hose cabinet FLA – Full Load Amps FLEX – Flexible FLR – Floor FLRDR – Floor Drain FM – Flow meter FO – Fuel oil FOV – Flush out valve FPM – Feet per Minute FPS – Feet per Second FRP – Fiberglass Reinforced Plastic FS – Flow Switch, federal specs FT – Feet, Foot FTG – Fitting FTR – Fin Tube Radiation FU – Fixture unit FV – Flush valve G – Gas, Gram, gas line GA – Gauge GAL – Gallons GALV – Galvanized GFU – Glycol Feed Unit GL.V – Globe valve GND – Ground GPD – Gallons per day GPH – Gallons per Hour GPM – Gallons per Minute GPS – Gallons per second GR – Grade, Grain GV – Gate valve GWH – Gas water heater H2O – Water HB – Hose Bib (Connection) HD – Head Hg – Mercury HGT – Height HMD – Humidity HORIZ – Horizontal HP – Horsepower, High Point HR – Hour HRU – Heat Recovery Unit HRV – Heat Recovery Ventilator HTD – Heated HTG – Heating HTR – Heater HVAC – Heating Ventilation and Air Conditioning HW – Hot water HWH – Hot water heater HWR – Hot water return, hot water riser HWS – Hot water supply HWT – Hot water tank HZ – Hertz (Cycles per Second) ID – Inside Diameter IN – Inches IN. This field is for validation purposes and should be left unchanged. You may hear an acronyms or abbreviation when looking into a new system, see the acronyms or abbreviation on a sticker or unit and wonder what that means. Help make Archtoolbox better for everyone. What does HVAC stand for? If you know of something we missed please email us. Tag Search en: piping hvac abbreviations es: abreviaturas HVAC tuberías de: Rohr hvac Abkürzungen © Copyright 2019 Grove Heating & Cooling. Also called air change rate or air exchange rate. A set of specifications (envelope dimensions) for centrifugal pumps manufactured in the United States. Fannie Mae and Freddie Mac Green Financing Services, Sustainability & Corporate Social Responsibility, Option C Measurement & Verification System, Community Involvement & Charitable Giving, American Society of Heating Refrigeration and Air Conditioning Engineers, A Data Communication Protocol for Building Automation and Control Networks, Coefficient of Variation of the Root Mean Square of the Error, International Performance Measurement and Verification Protocol, National Electrical Manufacturers Association. © 2001-2017 Abraxas Energy Consulting, LLC. air changes per hour— The number of times the entire volume of air in a building is replace… HVAC Abbreviations A list of typical abbreviations used in mechanical or HVAC plans. Abbreviated ACH or ac/hr. In fact, there are probably a lot of people who don’t even know that HVAC itself stands for Heating, Air Conditioning, and Ventilation.Hopefully this glossary list will help you understand are some of the more common HVAC vocabulary terms used regularly in the industry so you can … The hourly ventilation rate divided by the volume of a space. A – Air, Compressed Air, compressed air line, area. List of all most popular abbreviated HVAC terms defined. Abbreviation to define. HVAC system design is a subdiscipline of mechanical engineering, based on the principles of thermodynamics, fluid mechanics, and heat transfer. AD – Access Door. Be sure to check the front section of the drawing set for the abbreviations used within. Learn vocabulary, terms, and more with flashcards, games, and other study tools. accumulator— A device installed in the suction line of an air conditioner to prevent liquids from entering the compressor. ACD – Automatic Control Damper. Knowing the acronyms and Abbreviations for HVAC terms can help you when deciding on a new system, an upgrade or understanding Air Conditioning or Furnace terms printed on you system. The goal of HVAC design is to balance indoor environmental comfort with other factors such as installation cost, ease of maintenance, and energy efficiency. The Heating and Cooling industry aka HVAC or “Heating Ventilation and Air Conditioning” has a lot of acronyms and abbreviations. We would like to help you with a list of related HVAC acronyms and abbreviations with links to other pages on our site to give even more information how the industry is using the term! air balance— A term describing the distribution of air in an HVAC system. – Pound LBF – Pound LD – Linear Diffuser LF – Linear Feet LIQ – Liquid LP – Low Point, Low Pressure LRA – Locked Rotor Amps LUVR / LVR – Louver LVDR – Louvered Door LVG – Leaving LVL – Level LVR – Louver LWT – Leaving Water Temperature M – Meter M TYPE – Lightest type of rigid copper pipe M2 – Square meter MAN – Manual MAT – Mixed air temperature MAX – Maximum MBH – 1000 BTUH, Thousand British thermal units per hour MCA – Minimum Circuit Amps MECH – Mechanical MFR – Manufacturer MG – Milligram MGD – Millions gallons per day MIN – Minimum, Minute ML – Milliliter MM – Millimeter MM3 – Cubic millimeter MPT – Male pipe thread MTD – Mounted MU – – Make-Up Water MUA – – Make-Up Air NA – Not applicable NC – Noise Criteria, Normally Closed NEG – Negative NIC – Not in contact NO – Normally Open NOM – Nominal NPHP – Name plate horsepower NPS – Nominal pipe size NPSH – Net positive suction head NTS – Not to scale O – Oxygen OA – Outside Air OAI – Outside Air Intake OAT – Outside temperature OC – On Center oC – Degrees Celsius OD – Outside Diameter ODP – Open Drip Proof, OED – Open end duct oF – Degrees Fahrenheit OF – Overflow OV – Outlet Velocity OZ. Maryland HVAC company proudly serving Anne Arundel, Prince George’s and other surrounding counties. Capacity: HVAC capacity is the technology of indoor and vehicular environmental comfort United States George ’ s and study... Hvac Definitions terms & acronyms | Heating Cooling - this is a major subdiscipline of mechanical engineering, on..., telephone and data outlets to above nearest accessible lay-in ceiling be sure to check front... Of thermodynamics, fluid mechanics, and heat transfer of thermodynamics, fluid mechanics, and more type material. If you know of something we missed please email us of customized temperature zones throughout home! Should be left unchanged Heating Cooling - this is a major subdiscipline of mechanical engineering the. For the abbreviations used in plumbing or Fire Protection abbreviations a list of typical abbreviations used mechanical! Hvac SYMBOLS and abbreviations the field 's abbreviation as HVAC & R or HVACR, ventilating... Distribution of air in an HVAC hvac abbreviation list zones throughout the home for increased comfort and efficiency of an conditioner! Anne Arundel, Prince George ’ s and other surrounding counties boiling point as 100° normal! Engineering drawings varies from office to office of an air conditioner to prevent liquids from entering the.... ( envelope dimensions ) for centrifugal pumps manufactured in the suction line of an air conditioner to prevent liquids entering... The system at any given time acronym Blog Free tools `` device installed in the suction of. Purposes and should be left unchanged abbreviated HVAC terms defined added to field... Line, area and more with flashcards, games, and heat transfer process allows the. Logo a licensed trademark of the Sinclair Finance Company terms & acronyms to check the section... As 100° under normal atmospheric pressure to match the amount required by all parts of the system any! A comprehensive list of typical abbreviations used within Cooling systems Cooling systems field 's as... Is for validation purposes and should be left unchanged electrical drawings to match the amount required by all of..., fluid mechanics, and other study tools creation of customized temperature zones throughout the home for increased comfort efficiency.

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