Liberal Dictionary English Dictionary
Physics.
- British thermal unit; British thermal units.
What is a BTU?
What is a BTU?
Calculate-BTU-Per-Square-Foot-Step-9
Calculate-BTU-Per-Square-Foot-Step-9
Calculating the British Thermal Unit (BTU) Per Square Footage
Calculating the British Thermal Unit (BTU) Per Square Footage
What is a BTU anyways? – YouTube
