97:
for a human being to walk on without damaging the grille. It is rare to find a floor register installed less than 6 inches (15 cm) from the corner of a room. When a floor register is not practical or desired, a wall register is used. The correct placement of wall heating registers is critical. Generally, the heating register will be directly across from an exterior window. The hot air from the register will mix with the cold air coming off the window, cool, and drop to the floor—creating good air circulation. However, the hot air must be pushed from the register with enough force (or "throw") so that it will cross the room and reach the window. If there is too little throw, the hot air will stop moving partway across the room, the cold air from the window will not be heated (creating the feeling of a cool draft), and air circulation will suffer.
93:
interfere with conversation or work (such as sound recording). The velocity of air through a register is usually kept low enough so that it is masked by background noise. (Higher ambient levels of background noise, such as those in restaurants, allow higher air velocities.) On the other hand, air velocity must be high enough to achieve the desired temperature. Registers are a critical part of the HVAC system. If not properly installed and tightly connected to the ductwork, air will spill around the register and greatly reduce the HVAC system's efficiency. Ideally, a room will have both heating and cooling registers. In practice, cost considerations usually require that heating and cooling be provided by the same register. In such cases, heating most often takes precedence over cooling, and registers are usually found close to the floor.
106:
Dampers can also help adjust a HVAC system for seasonal use. During winter months, for example, an air conditioning register can be closed to prevent cold air from being pulled from the room. This allows the hot air to mix more completely with the cold air in the room, improving the efficiency of the HVAC system. (The return should be efficient enough to draw off the cooler air.)
17:
85:
81:
wall or ceiling nearest the center of the building. Generally, in rooms where it is critical to maintain a constant temperature two registers (one placed near the ceiling to deliver cold air, and one placed in the floor to deliver hot air) and two returns (one high, one low) will be used. HVAC systems generally have one register and one return per room.
109:
Some registers, particularly those in commercial buildings or institutions which house large numbers of people (such as hotels or hospitals) have a fire damper attached to them. This damper automatically senses smoke or extreme heat, and shuts the register closed so that fire and smoke do not travel
105:
A register's damper provides a critical function. Primarily, the damper allows the amount of hot or cool air entering a room to be controlled, providing for more accurate control over room temperature. Dampers also allow air to be shut off in unused rooms, improving the efficiency of the HVAC system.
80:
Placement of registers is key in creating an efficient HVAC system. Usually, a register is placed near a window or door, which is where the greatest heat/cooling loss occurs. In contrast, returns (grilled ducts which suck air back into the HVAC system for heating or cooling) are usually placed in the
96:
For heating purposes, a floor register is preferred. This is because hot air rises, and as it cools it falls. This creates good air circulation in a room, and helps to maintain a more even temperature as hot and cold air is mixed more thoroughly. Floor registers generally have a grille strong enough
92:
Registers vary in size with the heating and cooling requirements of the room. If a register is too small, the HVAC system will need to push air through the ducts at a faster rate in order to achieve the desired heating or cooling. This can create rushing sounds which can disturb occupants or
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with moving parts, capable of being opened and closed and the air flow directed, which is part of a building's
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are often used interchangeably, and care must be taken to determine the meaning of the term used.
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52:(used for heating, cooling, or ventilation, or a combination thereof). Grilles sometimes have
487:
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880:
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773:
768:
685:
36:(HVAC) system. The placement and size of registers is critical to HVAC efficiency. Register
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An unlouvered wall register, which allows circulation of air from one floor to another.
56:
which allow the flow of air to be directed. A register differs from a grille in that a
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84:
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83:
15:
1264:
1184:
33:
491:
166:
164:
183:
181:
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136:
134:
254:
218:
155:
296:
The
Everything Homebuilding Book: Build Your Dream Home
433:
Building
Technology: Mechanical and Electrical Systems
414:
40:
are also important, and can serve a safety function.
1829:
1795:
1722:
1626:
1474:
977:
663:
525:
352:
431:Stein, Benjamin; McGuinness, William J. (1997).
242:
170:
503:
278:
187:
110:throughout the building via the HVAC system.
60:is included. However, in practice, the terms
8:
266:
140:
412:Stamper, Eugene; Koral, Richard L. (1979).
376:The Complete Guide to Contracting Your Home
332:Haines, Roger W.; Wilson, C. Lewis (2003).
1893:Heating, ventilation, and air conditioning
1270:High efficiency glandless circulating pump
519:Heating, ventilation, and air conditioning
510:
496:
488:
351:Jefferis, Alan; Smith, Kenneth D. (2002).
34:heating, ventilation, and air conditioning
199:
1704:Mold growth, assessment, and remediation
230:
125:
397:. Carlsbad, Calif.: Craftsman Book Co.
118:
469:Watt, John R.; Brown, Will K. (1997).
294:Bolton, Lesley; Schmitt, Mark (2004).
48:A grille is a perforated cover for an
1577:Programmable communicating thermostat
471:Evaporative Air Conditioning Handbook
374:Lester, Kent; McGuerty, Dave (2009).
317:. Chicago: Dearborn Home Inspection.
7:
1699:Mechanical, electrical, and plumbing
378:. Cincinnati: Betterway Home Books.
1560:Minimum efficiency reporting value
359:. Albany, N.Y.: Thomson Learning.
14:
1602:Standard temperature and pressure
1315:Packaged terminal air conditioner
851:Passive daytime radiative cooling
580:Heat pump and refrigeration cycle
355:Commercial Drafting and Detailing
313:Dearborn Home Inspection (2003).
671:Absorption-compression heat pump
473:. Lilburn, Ga.: Fairmont Press.
454:. Lilburn, Ga.: Fairmont Press.
1566:Normal temperature and pressure
946:Vapor-compression refrigeration
435:. New York: J. Wiley and Sons.
416:. New York: Industrial Press.
395:Basic Engineering for Builders
1:
1714:Testing, adjusting, balancing
1658:Building information modeling
1653:Building services engineering
1230:Ground-coupled heat exchanger
758:Demand controlled ventilation
706:Building insulation materials
315:Principles of Home Inspection
255:Dearborn Home Inspection 2003
219:Dearborn Home Inspection 2003
156:Dearborn Home Inspection 2003
1275:High-pressure cut-off switch
826:Ice storage air conditioning
747:Dedicated outdoor air system
450:Sugarman, Samuel C. (2005).
334:HVAC Systems Design Handbook
298:. Avon, Mass.: Adams Media.
1618:Thermostatic radiator valve
1420:Thermostatic radiator valve
931:Underfloor air distribution
866:Radiant heating and cooling
784:Energy recovery ventilation
696:Automobile air conditioning
560:Domestic energy consumption
243:Stein & McGuinness 1997
76:Register size and placement
1914:
1767:Institute of Refrigeration
1648:Architectural technologist
1120:Electrostatic precipitator
171:Lester & McGuerty 2009
1820:Volatile organic compound
1679:Environmental engineering
1643:Architectural engineering
1445:Ultra-low particulate air
1030:Automatic balancing valve
958:Variable refrigerant flow
810:Heat recovery ventilation
753:Deep water source cooling
336:. New York: McGraw-Hill.
279:Jefferis & Smith 2002
188:Bolton & Schmitt 2004
1867:Template:Home automation
1689:Kitchen exhaust cleaning
1385:Solar-assisted heat pump
985:Air conditioner inverter
764:Displacement ventilation
655:Vapour pressure of water
640:Thermal destratification
267:Stamper & Koral 1979
141:Haines & Wilson 2003
1862:World Refrigeration Day
1709:Refrigerant reclamation
1638:Architectural acoustics
1582:Programmable thermostat
1514:Clean air delivery rate
1410:Thermal expansion valve
1325:Pressurisation ductwork
1235:Ground source heat pump
676:Absorption refrigerator
1898:Mechanical engineering
1852:Glossary of HVAC terms
1814:Sick building syndrome
1694:Mechanical engineering
1405:Smoke exhaust ductwork
836:Mixed-mode ventilation
393:Schwartz, max (1993).
89:
21:
1872:Template:Solar energy
1550:Intelligent buildings
1509:Carbon dioxide sensor
896:Room air distribution
716:Central solar heating
200:Watt & Brown 1997
87:
19:
1674:Duct leakage testing
1664:Deep energy retrofit
1608:Thermographic camera
1545:Infrared thermometer
1020:Air source heat pump
969:Water heat recycling
535:Air changes per hour
1540:HVAC control system
1530:Home energy monitor
1504:Building automation
1290:Inverter compressor
952:Variable air volume
861:Passive ventilation
831:Kitchen ventilation
731:Constant air volume
701:Autonomous building
1803:Indoor air quality
1747:ASTM International
1684:Hydronic balancing
1461:Wood-burning stove
1340:Radiator reflector
1125:Evaporative cooler
936:Underfloor heating
921:Thermal insulation
90:
22:
1880:
1879:
1796:Health and safety
1375:Scroll compressor
1330:Process duct work
1085:Convection heater
1080:Condensing boiler
1010:Air-mixing plenum
906:Solar combisystem
742:Cross ventilation
545:Building envelope
452:HVAC Fundamentals
221:, pp. 80–81.
20:A floor register.
1905:
1842:Building science
1597:Smart thermostat
1592:Room temperature
1175:Fireplace insert
881:Radon mitigation
779:Electric heating
774:District heating
769:District cooling
686:Air conditioning
512:
505:
498:
489:
484:
465:
446:
427:
408:
389:
370:
358:
347:
328:
309:
282:
276:
270:
269:, p. 7—127.
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197:
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101:Register dampers
1913:
1912:
1908:
1907:
1906:
1904:
1903:
1902:
1883:
1882:
1881:
1876:
1837:ASHRAE Handbook
1825:
1809:Passive smoking
1791:
1724:
1718:
1630:
1628:
1622:
1476:
1470:
1451:Whole-house fan
1365:Run-around coil
1360:Reversing valve
1305:Mechanical room
1295:Kerosene heater
1285:Infrared heater
1215:Gasoline heater
1155:Fan filter unit
1070:Condensate pump
1055:Centrifugal fan
973:
876:Radiant heating
871:Radiant cooling
846:Passive cooling
841:Microgeneration
711:Central heating
659:
635:Thermal comfort
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1587:Psychrometrics
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1484:Air flow meter
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1260:Heating system
1257:
1252:
1247:
1242:
1240:Heat exchanger
1237:
1232:
1227:
1222:
1217:
1212:
1207:
1205:Gas compressor
1202:
1197:
1192:
1187:
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1177:
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1167:
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1140:Expansion tank
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1060:Ceramic heater
1057:
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901:Solar air heat
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891:Renewable heat
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868:
863:
858:
853:
848:
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828:
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800:Forced-air gas
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661:
660:
658:
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652:
650:Thermodynamics
647:
642:
637:
632:
627:
622:
620:Psychrometrics
617:
612:
607:
602:
597:
592:
587:
582:
577:
575:Gas compressor
572:
570:Fluid dynamics
567:
562:
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329:
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310:
304:
289:
286:
284:
283:
281:, p. 236.
271:
259:
247:
245:, p. 262.
235:
233:, p. 345.
223:
204:
202:, p. 308.
192:
190:, p. 180.
175:
173:, p. 174.
160:
145:
143:, p. 129.
130:
128:, p. 132.
117:
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1727:
1725:organizations
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1669:Duct cleaning
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1520:Control valve
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1440:Turning vanes
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1415:Thermal wheel
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1380:Solar chimney
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1150:Fan coil unit
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1095:Cooling tower
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941:Vapor barrier
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916:Solar heating
914:
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726:Chilled water
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605:Noise control
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480:9780137485192
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442:9780471593195
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257:, p. 81.
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231:Schwartz 1993
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126:Sugarman 2005
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18:
1847:Fireproofing
1631:and services
1627:Professions,
1525:Gas detector
1425:Trickle vent
1400:Smoke damper
1395:Smoke canopy
1390:Space heater
1354:
1320:Plenum space
1255:Heating film
1135:Exhaust hood
1105:Dehumidifier
1045:Blast damper
1040:Barrier pipe
1015:Air purifier
926:Thermosiphon
805:Free cooling
721:Chilled beam
645:Thermal mass
630:Stack effect
615:Particulates
595:Infiltration
526:Fundamental
470:
451:
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288:Bibliography
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47:
25:
23:
1857:Warm Spaces
1499:Blower door
1477:and control
1475:Measurement
1456:Windcatcher
1430:Trombe wall
1370:Sail switch
1350:Refrigerant
1345:Recuperator
1220:Grease duct
1180:Freeze stat
1165:Fire damper
1035:Back boiler
1005:Air ionizer
1000:Air handler
964:Ventilation
816:Hybrid heat
681:Air barrier
600:Latent heat
44:Terminology
1887:Categories
1613:Thermostat
1535:Humidistat
1466:Zone valve
1435:TurboSwing
1310:Oil heater
1280:Humidifier
1210:Gas heater
1160:Fan heater
1130:Evaporator
1115:Economizer
1090:Compressor
995:Air filter
978:Components
795:Forced-air
691:Antifreeze
664:Technology
610:Outgassing
550:Convection
114:References
1723:Industry
1572:OpenTherm
1250:Heat pump
1245:Heat pipe
1195:Fume hood
1170:Fireplace
1075:Condenser
1025:Attic fan
821:Hydronics
1830:See also
1555:LonWorks
1489:Aquastat
1355:Register
1335:Radiator
990:Air door
790:Firestop
590:Humidity
565:Enthalpy
555:Dilution
540:Bake-out
528:concepts
66:register
50:air duct
26:register
1629:trades,
1200:Furnace
1065:Chiller
737:Coolant
54:louvers
38:dampers
1782:SMACNA
1742:ASHRAE
1562:(MERV)
1516:(CADR)
1494:BACnet
1447:(ULPA)
1300:Louver
1225:Grille
1100:Damper
1050:Boiler
948:(VCRS)
749:(DOAS)
477:
458:
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382:
363:
340:
321:
302:
70:return
68:, and
62:grille
58:damper
30:grille
1822:(VOC)
1816:(SBS)
1805:(IAQ)
1762:CIBSE
1757:BSRIA
1660:(BIM)
1604:(STP)
1568:(NTP)
1190:Freon
960:(VRF)
954:(VAV)
812:(HRV)
786:(ERV)
760:(DCV)
733:(CAV)
28:is a
1777:LEED
1737:AMCA
1732:AHRI
1265:HEPA
1185:Flue
1110:Duct
475:ISBN
456:ISBN
437:ISBN
418:ISBN
399:ISBN
380:ISBN
361:ISBN
338:ISBN
319:ISBN
300:ISBN
1787:UMC
1772:IIR
1752:BRE
1145:Fan
1889::
207:^
178:^
163:^
148:^
133:^
64:,
24:A
511:e
504:t
497:v
483:.
464:.
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308:.
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