21000 BTU/h to Tons
21000 BTU/h ≈ 1.75 tons
21000 BTU per hour is approximately 1.75 tons of refrigeration.
How to convert 21000 BTU/h to tons
Use the formula tons = BTU/h ÷ 12000:
tons = 21000 ÷ 12000tons = 1.75
So 21000 BTU/h = 1.75 tons.
Rounded values and quick estimate
- Rounded to a whole number: 2 tons
- Rounded to one decimal place: 1.7 tons
- Conversion factor: 1 BTU per hour = 0.000083 tons of refrigeration
This conversion is exact, so there is no need to estimate: just divide by 12,000.
21000 BTU/h in other units
- Tons of refrigeration
- 1.75 tons
- Watts
- 6154.49 W
- Kilowatts
- 6.15 kW
- Horsepower
- 8.25 hp
21000 BTU/h and nearby values
| BTU per hour | Tons of refrigeration |
|---|---|
| 20996 BTU/h | 1.75 tons |
| 20997 BTU/h | 1.75 tons |
| 20998 BTU/h | 1.75 tons |
| 20999 BTU/h | 1.75 tons |
| 21000 BTU/h | 1.75 tons |
| 21001 BTU/h | 1.75 tons |
| 21002 BTU/h | 1.75 tons |
| 21003 BTU/h | 1.75 tons |
| 21004 BTU/h | 1.75 tons |
About btu per hour and tons of refrigeration
BTU per hour measures heating or cooling power. 1 BTU/h ≈ 0.293 watts; air conditioners are rated in BTU/h.
A ton of refrigeration is 12,000 BTU/h (about 3.517 kW) — the cooling needed to melt one short ton of ice in 24 hours.
Related conversions
Frequently asked questions
What is 21000 BTU/h in Tons?
21000 BTU per hour is about 1.75 tons of refrigeration (21000 BTU/h ≈ 1.75 tons).
How do you convert 21000 BTU/h to tons?
Apply tons = BTU/h ÷ 12000: tons = 21000 ÷ 12000, tons = 1.75.
How many BTU per hour is 1.75 tons?
1.75 tons is about 21000 BTU per hour.