Indoor Design Conditions

Office Buildings, Commercial Facilities

Office Buildings, Commercial Facilities

Cooling

Heating

Temperature ºF

Dry Bulb

Humidity

%RH

Temperature ºF

Dry Bulb

Humidity

%RH

Offices

75

50

70

Conference Rooms, Meeting Rooms, Classrooms, Training Rooms

75

50

70

Reception Areas, Lobbies, Corridors

75

50

70

Network Computer Rooms

72 ± 2

72 ± 2

Telecommunication Areas/Data Entry

75

50

70

 

General Spaces

General Spaces

Cooling

Heating

Temperature ºF

Dry Bulb

Humidity

%RH

Temperature ºF

Dry Bulb

Humidity

%RH

Mechanical/Electrical/Equip. Rooms

85–90

60

Elevator Machine Rooms

85–90

65

Telecommunication Rooms

72 ± 2

72 ± 2

Toilet Rooms, Locker Rooms, Shower Rooms

78

50

70

Janitor Closets, Housekeeping

85

60

Lobbies, Corridors, Elevator Lobbies, Atriums

75

50

70

Vestibules, Entrances, Stairs

60

Stairs on Perimeter of Building or w/Glass

80

60

Storage

78

50

70

Garages—Open

Garages—Enclosed

50 (9)

 

Educational Facilities

Educational Facilities

Cooling

Heating

Temperature ºF

Dry Bulb

Humidity

%RH

Temperature ºF

Dry Bulb

Humidity

%RH

Auditoriums, Gymnasiums, Multipurpose Rooms

75

50

70

Classrooms, Lecture Halls

75

50

70

Laboratories—High School (4)

75

50

70

Laboratories—College or University (4)

75 ± 2

45 ± 5

72 ± 2

45 ± 5

Libraries

75

50

70

Music Rooms, Art Rooms

75

50

70

Training Shops

75

50

70

 

Food and Beverage Service

Food and Beverage Service

Cooling

Heating

Temperature ºF

Dry Bulb

Humidity

%RH

Temperature ºF

Dry Bulb

Humidity

%RH

Restaurants, Dining Rooms, Bars, Lounges, Cocktail Lounges

75

50

70

Cafeteria, Fast Food

75

50

70

Kitchens, Dishwashing

80

68

 

Hotels, Motels, Resorts, and Dormitories

Hotels, Motels, Resorts, and Dormitories

Cooling

Heating

Temperature ºF

Dry Bulb

Humidity

%RH

Temperature ºF

Dry Bulb

Humidity

%RH

Conference Rooms, Meeting Rooms, Ball rooms

75

50

70

Bedrooms, Bathrooms

75

50

70

Dormitory Sleeping Areas

75

50

70

Living Rooms, Dining Rooms

75

50

70

Gambling Casinos, Gaming Rooms

75

50

70

Prison Cells

75

50

70

Dining Halls, Day Rooms

75

50

70

Guard Stations

75

50

70

 

Correctional Facilities

Correctional Facilities

Cooling

Heating

Temperature ºF

Dry Bulb

Humidity

%RH

Temperature ºF

Dry Bulb

Humidity

%RH

Prison Cells

75

50

70

Dining Halls, Day Rooms

75

50

70

Guard Stations

75

50

70

 

Retail Stores and Specialty Shops

Retail Stores and Specialty Shops

Cooling

Heating

Temperature ºF

Dry Bulb

Humidity

%RH

Temperature ºF

Dry Bulb

Humidity

%RH

Malls and Arcades

75

50

70

 

Department Stores, Supermarkets, Showroom

Floors, Clothiers, Furniture

75

50

70

 

Dressing Rooms

75

50

70

 

Shipping and Receiving

60

 

Storage Rooms

78

50

70

Warehouses (7)

78

50

70

Barber Shop, Beauty Shop, Nail Salons

75

50

70

Hardware, Drug Stores, Fabric Stores, Specialty Stores

75

50

70

Pet Stores

75

50

70

Automobile Showrooms

75

50

70

 

Theaters

Theaters

Cooling

Heating

Temperature ºF

Dry Bulb

Humidity

%RH

Temperature ºF

Dry Bulb

Humidity

%RH

Auditoriums, Concert Halls, Performing Arts

Centers—Seating Area (5)

75

50

70

Stages, Performing Arts Studios— Performance Areas (5)

72 ± 2

40 ± 5

72 ± 2

40 ± 5

3D Theaters (6)

72

50

70

Lobbies, Ticket Booths, On-Call Windows

75

50

70

 

Sports and Entertainment

Sports and Entertainment

Cooling

Heating

Temperature ºF

Dry Bulb

Humidity

%RH

Temperature ºF

Dry Bulb

Humidity

%RH

Ballrooms, Disco, Dance Establishments

75

50

70

Bowling Alleys, Game Rooms, Arcades

75

50

70

Firing Ranges

75

50

70

Gymnasiums, Playing Floors

75

50

65

Swimming Pools, Natatoriums

75

50

70

Spectator Areas

75

50

70

 

Transportation

Transportation

Cooling

Heating

Temperature ºF

Dry Bulb

Humidity

%RH

Temperature ºF

Dry Bulb

Humidity

%RH

Bus Stations, Airports

75

50

70

Waiting Areas

75

50

70

 

Storage Facilities

Storage Facilities

Cooling

Heating

Temperature ºF

Dry Bulb

Humidity

%RH

Temperature ºF

Dry Bulb

Humidity

%RH

Repair Garages (8)

65

Warehouses (7)

78

50

70

 

Workrooms

Workrooms

Cooling

Heating

Temperature ºF

Dry Bulb

Humidity

%RH

Temperature ºF

Dry Bulb

Humidity

%RH

Bank Vaults

75

50

70

Darkrooms

75

50

70

Duplicating, Printing

75

50

70

Pharmacy

75

50

70

Photo Studios

75

50

70

 

Private Dwelling—Single and Multiple

Private Dwelling—Single and Multiple

Cooling

Heating

Temperature ºF

Dry Bulb

Humidity

%RH

Temperature ºF

Dry Bulb

Humidity

%RH

Living Rooms, Dining Rooms, Bedrooms, Kitchens

75

50

70

Toilet Rooms, Bathrooms

78

50

70

Garages

50 (9)

 

Laboratories, Computer Facilities, High-Tech Industrial, Special Facilities

Laboratories, Computer Facilities, High-Tech Industrial, Special Facilities (4)

Cooling

Heating

Temperature ºF

Dry Bulb

Humidity

%RH

Temperature ºF

Dry Bulb

Humidity

%RH

Laboratories—Research

72 ± 2

45 ± 5

72 ± 2

45 ± 5

Computer Rooms, Data Centers, Internet

Host Sites, Server Rooms, Demarc Rooms

70 ± 2

45 ± 5

70 ± 2

45 ± 5

High Tech

68 ± 2

45 ± 5

68 ± 2

45 ± 5

High Tech (low humidity)

68 ± 2

35 ± 5

68 ± 2

35 ± 5

Animal Research Rooms

68–84 ± 2

40–70 ± 5

68–84 ± 2

40–70 ± 5

Museums, Galleries, Rare Document Libraries, Archives

72 ± 2

40 ± 5

72 ± 2

40 ± 5

 

Hospital Nursing Units

Hospital Nursing Units (2)

Cooling

Heating

Temperature ºF

Dry Bulb

Humidity

%RH

Temperature ºF

Dry Bulb

Humidity

%RH

Patient Rooms

75

50

70

Toilet Rooms

75

50

70

Newborn Nursery Suite

75

50

72

30

Protective Environment Room (PER)

75

50

70

PER Alcove or Anterooms

75

50

70

Isolation Room (IR)

75

50

70

(IR) Alcove or Anterooms

75

50

70

Patient Corridor

75

50

70

 

Obstetrical Facilities

Obstetrical Facilities (2)

Cooling

Heating

Temperature ºF

Dry Bulb

Humidity

%RH

Temperature ºF

Dry Bulb

Humidity

%RH

Delivery Rooms

72

50

72

30

Labor/Delivery/Recovery

75

50

70

Labor/Delivery/Recovery/Postpartum

75

50

70

 

Emergency, Surgery, and Critical Care

Emergency, Surgery, and Critical Care (2)

Cooling

Heating

Temperature ºF

Dry Bulb

Humidity

%RH

Temperature ºF

Dry Bulb

Humidity

%RH

Operating/Surgical/Cystoscopic Rooms

72

72 ± 2

50

45% ± 5

72

72 ± 2

30

45 ± 5

Cardiac Operating Rooms (3)

72

50

50

50

72

50

30

30

Recovery Rooms

75

50

72

30

Critical and Intensive Care

75

75 ± 2

50

45% ± 5

72

72 ± 2

30

45 ± 5

Intermediate Care

75

50

72

30

Newborn Intensive Care

75

75 ± 2

50

45% ± 5

72

72 ± 2

30

45 ± 5

Treatment Rooms

75

50

70

Trauma Rooms

75

50

72

30

Bronchoscopy

72

50

72

30

Triage

75

50

70

ER Waiting Rooms

75

50

70

Procedure Rooms

75

50

72

30

Laser Eye Rooms

75

50

72

30

X-Ray (Surgical/Critical Care and Catheterization)

75

50

72

30

Anesthesia Gas Storage

75

50

72

 

Hospital Facility Support Areas

Hospital Facility Support Areas (2)

Cooling

Heating

Temperature ºF

Dry Bulb

Humidity

%RH

Temperature ºF

Dry Bulb

Humidity

%RH

Medication Rooms

75

50

72

Clean Workrooms or Clean Holding

75

50

72

Soiled Workrooms or Soiled Holding

75

50

72

 

Diagnostic and Treatment Areas

Diagnostic and Treatment Areas (2)

Cooling

Heating

Temperature ºF

Dry Bulb

Humidity

%RH

Temperature ºF

Dry Bulb

Humidity

%RH

Examination Rooms

75

50

72

Treatment Rooms

75

50

72

Physical Therapy and Hydrotherapy

75

50

72

Gastrointestinal Endoscopy Rooms

72

50

72

30

Endoscopic Instrument Processing Rooms

75

50

72

Imaging: X-Ray (Diagnostic and Treatment)

75

50

75

Imaging: Darkrooms

75

50

72

Imaging: Waiting Rooms

75

50

72

Laboratory: General

75

50

75

Laboratory: Biochemistry

75

50

75

Laboratory: Cytology

75

50

75

Laboratory: Glass Washing

75

50

72

Laboratory: Histology

75

50

75

Laboratory: Microbiology

75

50

75

Laboratory: Nuclear Medicine

75

50

75

Laboratory: Pathology

75

50

75

Laboratory: Serology

75

50

75

Laboratory: Sterilizing

75

50

72

Autopsy Rooms

75

50

72

Nonrefrigerated Body-Holding Rooms

70

50

70

 

Hospital Service Areas

Hospital Service Areas (2)

Cooling

Heating

Temperature ºF

Dry Bulb

Humidity

%RH

Temperature ºF

Dry Bulb

Humidity

%RH

Pharmacy

70

50

70

Food Preparation Center

70

50

70

Warewashing

70

50

70

Dietary Day Storage

70

50

70

Laundry, General

70

50

70

Soiled Linen (Sorting and Storage)

70

50

70

Clean Linen Storage

70

50

70

Soiled Linen and Trash Chute Rooms

70

50

70

Bedpan Rooms

70

50

70

Bathrooms

75

50

75

Housekeeping Rooms

70

50

70

 

Sterilizing and Supply

Sterilizing and Supply (2)

Cooling

Heating

Temperature ºF

Dry Bulb

Humidity

%RH

Temperature ºF

Dry Bulb

Humidity

%RH

ETO Sterilizer Rooms

75

50

75

30

Sterilizer Equipment Rooms

70

50

70

Central Medical & Surgical Supply: Soiled or Decontamination Rooms

72

50

72

Central Medical and Surgical Supply: Clean Workrooms

75

50

75

30

Central Medical and Surgical Supply: Sterile Storage

70

50

70

 

Notes

1. Indoor design conditions are recommendations that may be used when owners of the facility used have no specific criteria. When codes, processes, or other criteria require different design conditions than those listed here, they should be used for design purposes.
 
2. 2006 Guidelines for Design and Construction of Health Care Facilities — AIA Committee on Architecture for Health and U.S. Department of Health and Human Services provides ranges for some of the spaces. The temperatures listed in the table fall within the ranges established in the guidelines or they are design temperatures required for human comfort when not provided by the guideline.  some specialty procedures may require special temperatures and relative humidity levels. The hospital staff should be consulted to determine any special requirements.
 
3. Cardiac OR may require reduced temperatures for operating as low as 50 °F.
 
4. With laboratories, computer facilities, high-tech industrial, special facilities, museums, and other spaces requiring critical temperature and relative humidity control, the owners and their staff should be consulted to verify the specific requirements. Requirements provided here are for general guidance only.
 
5. Some performances will require strict temperature and humidity control during the performance. Careful consideration must be given to the types of performances and their requirements when designing these facilities.
 
6. 3D type theaters (IMAX and OMNIMAX) should be maintained at temperatures at or below 72
°F because the incidents of motion sickness increase considerable above these temperatures.
 
7. Warehouse temperature and humidity requirements can vary considerably depending on the materials being stored.
 
8. Repair garages are generally not air conditioned. If air conditioning is desired, the cooling design temperature recommendation would be 80 to 85 °F.
 
9. Heating parking garages is not recommended because minimum-code-required ventilation rates require heating of the makeup air for the heating to become effective.