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350 sq ft room
The ENERGY STAR chart puts a 350 sq ft room at 8,000 BTU/hr.
| Situation | BTU/hr |
|---|---|
| Normal | 8,000 |
| Heavily shaded (−10%) | 7,200 |
| Very sunny (+10%) | 8,800 |
| 4 regular occupants (+1,200) | 9,200 |
| Kitchen (+4,000) | 12,000 |
Worked example
A sunny 350 sq ft living room used by 3 people: 8,000 × 1.1 = 8,800, plus 600 for the third person = 9,400 BTU/hr. Round up to the nearest unit size sold.
Frequently asked questions
How many BTU for 350 sq ft?
8,000 BTU/hr (ENERGY STAR chart), adjusted for sun and occupancy.