Indoor Design Temperatures
Recommended indoor temperatures in summer or winter.
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Indoor air-temperatures summer and winter should be kept within certain limits to achieve acceptable conditions.
Winter Conditions
Acceptable indoor temperatures at winter conditions are indicated in the table below.
| Type of Heated rooms | Temperature | |
|---|---|---|
| oF | oC | |
| Bars | 64 | 18 |
| Bathrooms | 72 | 22 |
| Bedrooms | 64 | 18 |
| Changing rooms | 72 | 22 |
| Churches | 64 | 18 |
| Cloakrooms | 61 | 16 |
| Classrooms | 68 | 20 |
| Corridors | 61 | 16 |
| Dining rooms | 68 | 20 |
| Dressing rooms | 70 | 21 |
| Exhibition halls | 64 | 18 |
| Factories, sedentary work | 64 | 18 |
| Factories, light work | 61 | 16 |
| Factories, heavy work | 55 | 13 |
| Gyms | 59 | 15 |
| Halls, assembly | 64 | 18 |
| Halls, entrance | 61 | 16 |
| Hotel rooms | 70 | 21 |
| Laboratories | 68 | 20 |
| Lecture rooms | 68 | 20 |
| Libraries | 68 | 20 |
| Living rooms | 70 | 21 |
| Museums | 68 | 20 |
| Offices | 68 | 20 |
| Operating theaters | 75 | 24 |
| Prisons | 64 | 18 |
| Recreation rooms | 64 | 18 |
| Restaurants | 64 | 18 |
| Shops | 64 | 18 |
| Stores | 59 | 15 |
| Swimming baths | 81 | 27 |
| Waiting rooms | 64 | 18 |
| Wards | 64 | 18 |
| Warehouses | 61 | 16 |
Summer Conditions
For summer the values below may be used as an indication of acceptable conditions.
| Optimum temperature | 20oC to 22oC |
| Optimum relative humidity | 40% to 65% |
Preferred indoor conditions for exposures less than 3 hours:
| Outside dry bulb temperature | Inside air conditions with dew point constant at 14oC | ||
|---|---|---|---|
| oC Load Calculator! | oC max | oC min | % |
| 35 | 27 | 18.5 | 44 |
| 32 | 26 | 18.0 | 46 |
| 29 | 25 | 17.8 | 52 |
| 27 | 24 | 17.5 | 51 |
| 24 | 23 | 17.2 | 57 |
| 21 | 22 | 17.0 | 57 |
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