Horsepower to BTU per minute is quite a rare conversion since we mostly use BTU per hour in HVAC. Not to worry, though; we will show you exactly how to convert HP to BTU per minute for air conditioners, furnaces, and so on. Further on, you will also find an easy-to-use HP To BTU/min Calculator (just insert HP, get BTU/min), complete with a 0.1 HP to 20 HP conversion chart (into 15 to 3,000 BTU/min).
Let’s first look at both of these units:
- HP or HorsePower is a unit for cooling or heating output in HVAC (for AC units, furnaces). This is quite a specific unit, designed for HVAC appliances. Namely, 1 HP is equal to 9,000 BTU per hour.
- BTU/min or British Thermal Unit per minute is also used as a unit of cooling/heating output. 1 BTU per minute is the amount of energy flow we have to introduce into the system (or remove from the system) to heat/cool 1 pound of water by 1 degree Fahrenheit in 1 minute. It is of note that BTU/min is a much bigger unit than BTU/hr, since this energy flow has to be done within a minute (instead of within an hour).

Here is 1 conversion rule that makes the HP to BTU per minute conversion very easy:
1 HP = 150 BTU/min
Based on this rule, we can write the conversion formula like this:
BTU/min = HP × 150
Here is a quick example: Let’s say you have a 2 HP air conditioner. How many BTUs per minute is this 2 HP AC unit? We just insert 2 HP into the equation like this:
BTU/min (2 HP) = 2 HP × 150 = 300 BTU/min
We see that 2 HP is equal to 300 BTU/min.
This was just one example. To help you out with this rare conversion, we have prepared a Horsepower To BTU/min Calculator you can freely use. We have also converted 0.1 HP to 20 HP into BTU/min and summarized the results in the conversion chart below this calculator:
Horsepower To BTU/min Calculator
Alright, here is how this calculator works:
Let’s say you want to know how many BTUs per minute is a 1.5 HP air conditioner. You just slide the slider to ‘1.5’, and you get the result: 1.5 HP is equal to 225 BTU/min.
Here is the full conversion chart:
HP To BTU/min Chart
Horsepower To BTU/hr Conversion Chart
Horsepower (HP in HVAC): | BTU/min: |
0.1 HP | 15 BTU/min |
0.5 HP | 75 BTU/min |
1 HP | 150 BTU/min |
1.5 HP | 225 BTU/min |
2 HP | 300 BTU/min |
2.5 HP | 375 BTU/min |
3 HP | 450 BTU/min |
3.5 HP | 525 BTU/min |
4 HP | 600 BTU/min |
4.5 HP | 675 BTU/min |
5 HP | 750 BTU/min |
5.5 HP | 825 BTU/min |
6 HP | 900 BTU/min |
6.5 HP | 975 BTU/min |
7 HP | 1,050 BTU/min |
7.5 HP | 1,125 BTU/min |
8 HP | 1,200 BTU/min |
8.5 HP | 1,275 BTU/min |
9 HP | 1,350 BTU/min |
9.5 HP | 1,425 BTU/min |
10 HP | 1,500 BTU/min |
12 HP | 1,800 BTU/min |
14 HP | 2,100 BTU/min |
15 HP | 2,250 BTU/min |
16 HP | 2,400 BTU/min |
20 HP | 3,000 BTU/min |
Now, whenever you need to convert HP to BTUs per minute, you can just check this chart.
Example: How many BTUs per minute is a 3 HP air conditioner? Simple. Just check the chart: 1.5 HP is equal to 450 BTU/min.
Hopefully, you can use the tools to make the conversion. If you need any help or would like for us to convert HP to BTU/min for you, you can use the comment section below, give us some numbers, and we will help you out. You can also check a similar Horsepower To BTU per hour calculator and chart here.