Lighting Rules Of Thumb (HVAC)


Offices, Commercial

  • General 1.5–3.0 Watts/ ft²
  • Private 2.0–5.0 Watts/ ft²
  • Conference, Meeting Rooms 2.0–6.0 Watts/ ft²

Banks, Court Houses, Municipal Buildings, Town Halls

2.0–5.0 Watts/ ft²

Police Stations, Fire Stations, Post Offices

2.0–3.0 Watts/ ft²

Precision Manufacturing

3.0–10.0 Watts/ ft²

Computer Rooms

1.5–5.0 Watts/ ft²


1.5–3.0 Watts/ ft²


1.5–2.5 Watts/ ft²

Cocktail Lounges, Bars, Taverns, Clubhouses, Nightclubs

1.5–2.0 Watts/ ft²

Hospital Patient Rooms, Nursing Home Patient Rooms

1.0–2.0 Watts/ ft²

Hospital General Areas

1.5–2.5 Watts/ ft²

Lighting Rules of Thumb 103

Medical/Dental Centers, Clinics, and Offices

1.5–2.5 Watts/ ft²


1.0–4.0 Watts/ ft²

Apartments (Eff., 1 Room, 2 Room)

1.0–4.0 Watts/ ft²

Motel and Hotel Public Spaces

1.0–3.0 Watts/ ft²

Motel and Hotel Guest Rooms, Dormitories

1.0–3.0 Watts/ ft²

School Classrooms

2.0–6.0 Watts/ ft²

Dining Halls, Lunch Rooms, Cafeterias, Luncheonettes

1.5–2.5 Watts/ ft²

Libraries, Museums

1.0–3.0 Watts/ ft²

Retail, Department Stores

2.0–6.0 Watts/ ft²

Drug, Shoe, Dress, Jewelry, Beauty, Barber, and Other Shops

Watts/ ft²


1.0–3.0 Watts/ ft²

Malls, Shopping Centers

1.0–2.5 Watts/ ft²


1.0–2.5 Watts/ ft²

Auditoriums, Theaters

1.0–3.0 Watts/ ft² (3)


1.0–3.0 Watts/ ft²

Bowling Alleys

1.0–2.5 Watts/ ft²

How useful was this post?

Click on a star to rate it!

Average rating / 5. Vote count:

No votes so far! Be the first to rate this post.

We are sorry that this post was not useful for you!

Let us improve this post!

Tell us how we can improve this post?