24000 BTU to HP
Updated
Convert 24,000 BTU/hr to mechanical horsepower with formula steps, a nearby-size table, and HVAC context.
Direct answer: 24,000 BTU/hr = 9.432 hp.
Quick converter
Mechanical horsepower
24,000 BTU/hr = 7,033.71 W of thermal capacity. Updates as you type.
Horsepower expresses a rate of work, while BTU/hr expresses a rate of heat transfer. They can be compared through watts: 1 mechanical horsepower equals 745.699872 W, and 1 BTU/hr equals 0.29307107 W. For 24,000 BTU/hr, the equivalent is 7,033.70568 W or 9.432 mechanical horsepower.
The worked arithmetic is 24,000 x 0.29307107 = 7,033.70568 W, followed by 7,033.70568 / 745.699872 = 9.4324 hp. This is an energy-rate equivalence, not a claim that an air-conditioner motor is a 9.432 hp motor. Motors have efficiency, starting current, and duty-cycle limits. For compressor selection, use manufacturer data and distinguish shaft horsepower from electrical input.
Worked example
- 1. Start
24,000 BTU/hr
- 2. Apply the formula
24,000 x 0.29307107 / 745.699872
- 3. Round the result
24,000 BTU/hr = 9.432 hp
Practical guidance
Why BTU/hr and horsepower can be compared
Both are rates. BTU/hr measures heat flow and horsepower measures mechanical work per unit time, so each can be written in watts. One mechanical horsepower equals 2,544.43 BTU/hr, which gives 24,000 / 2,544.43 = 9.432 hp.
Mechanical versus metric horsepower
Metric horsepower is 735.49875 W, slightly smaller than the mechanical 745.69987 W. Using the metric unit, 24,000 BTU/hr is about 9.563 metric hp. Check which definition a datasheet uses before comparing two figures.
What an air-conditioner HP rating really means
Split air conditioners in many markets are sold as 1 HP, 1.5 HP or 2 HP units. That is a marketing class tied loosely to cooling capacity and varies by manufacturer; it is not the result of this conversion, and a 24,000 BTU/hr unit is normally sold in the 2 to 2.5 HP class rather than as 9.4 HP.
Heat capacity versus compressor power
The 9.432 hp figure is the size of the heat flow, not of the motor. At an EER of 11, a 24,000 BTU/hr air conditioner draws about 2,182 W of electricity, roughly 2.9 hp, because the system moves heat rather than creating it.
When this conversion is useful
It helps when comparing a heat load with a pump, fan or engine rating, or when a specification mixes imperial heat units with horsepower. For electrical design, use the nameplate input and the local code, not this equivalence.
Common mistakes to avoid
- Treating 9.432 hp as the motor size of a 24,000 BTU/hr air conditioner
- Mixing mechanical hp (9.432) with metric hp (9.563) in the same comparison
- Using a sales HP class such as 2 HP as if it were a physical conversion
24000 BTU to HP chart
| BTU/hr | kW | Tons | HP |
|---|---|---|---|
| 9,000 | 2.638 | 0.75 | 3.537 |
| 12,000 | 3.517 | 1 | 4.716 |
| 18,000 | 5.275 | 1.5 | 7.074 |
| 24,000 | 7.034 | 2 | 9.432 |
| 30,000 | 8.792 | 2.5 | 11.79 |
| 36,000 | 10.551 | 3 | 14.149 |
| 48,000 | 14.067 | 4 | 18.865 |
| 60,000 | 17.584 | 5 | 23.581 |
Common questions
What is 24,000 BTU/hr in horsepower?
It is 9.4324 mechanical hp, normally shown as 9.432 hp.
Is this motor horsepower?
It is a thermal-to-mechanical equivalence and does not predict a motor nameplate.
What formula is used?
Convert BTU/hr to watts, then divide by 745.699872 W per mechanical horsepower.
What is 12,000 BTU/hr in hp?
It is about 4.716 hp using the same fixed conversion.
Why might a datasheet differ?
Datasheets may use metric horsepower, electrical input, shaft output, or efficiency-adjusted values.
How many BTU/hr is one horsepower?
One mechanical horsepower equals 2,544.43 BTU/hr, so 24,000 BTU/hr divided by 2,544.43 gives 9.432 hp.
What is 24,000 BTU/hr in kW and tons?
It is 7.034 thermal kW and exactly 2 refrigeration tons.
Is a 2 HP air conditioner the same as 24,000 BTU/hr?
Not necessarily. HP on a split air conditioner is a sales class that varies by manufacturer, with 2 HP often near 18,000 BTU/hr and 2.5 HP near 24,000 BTU/hr. Always read the BTU/hr or kW capacity on the label.
More size guides
Continue with the BTU to kW converter, compare BTU/hr to tons of refrigeration, or check the BTU to horsepower converter.