500 sq ft room
The ENERGY STAR chart puts a 500 sq ft room at 12,000 BTU/hr.
| Situation | BTU/hr |
|---|---|
| Normal | 12,000 |
| Heavily shaded (−10%) | 10,800 |
| Very sunny (+10%) | 13,200 |
| 4 regular occupants (+1,200) | 13,200 |
| Kitchen (+4,000) | 16,000 |
Worked example
A sunny 500 sq ft living room used by 3 people: 12,000 × 1.1 = 13,200, plus 600 for the third person = 13,800 BTU/hr. Round up to the nearest unit size sold.
Frequently asked questions
How many BTU for 500 sq ft?
12,000 BTU/hr (ENERGY STAR chart), adjusted for sun and occupancy.