Airflow is either measured in meter cube per hour or CFM. CFM or cubic feet per minute is usually the more useful metric. However, specification sheets of some devices like air purifiers may include meter cube per hour (m3/hr) but not CFM. That’s why it’s useful to convert meter cube per hour to CFM. How … Read more
To calculate watts-hours from amp-hours, we need to use the following formula: Watt-hours = Amp-hours * Volts As we can see, amp-hours multiplied by voltage equals watt hours. Using this equation, we can accurately convert watt-hours from amp-hours. You can find the Ah to Wh calculator here: We have also used the calculator to … Read more
Watt-hours and amp-hours are both units for electric charge. 1 watt-hour is defined as 1 watt of power expended for 1 hour. 1 amp hour is defined as 1 amp of current expended for 1 hour. How do you convert watt-hours to amp-hours? It is possible to convert watt-hours to amp-hours using the following formula: … Read more
If we know the amperage (A), we can easily convert watts to volts. For the W to V conversion, we can use the formula for electric power: P (W) = I (A) * V (V) To calculate volts from watts, we need to rearrange this formula by expressing voltage like this: Volt = Watts / … Read more
Amperes (A), volts (V), and watts (W) are the 3 basic electrical units, connecting electrical current, voltage, and power. Every electric device – from air conditioners to washing machines and generators – includes them in their specification sheets. One of the most common questions here is this: How to convert amps to watts? To convert … Read more
Before buying an air conditioner, you have to make the AC tonnage calculation. Not sizing an AC unit properly can cause $100s in wasted unit costs or future electricity costs. According to the DOE, “…an air conditioner generally needs 20 BTU for each square foot of living space.” We need to convert BTU to tonnage. … Read more
The power consumption calculator calculates how units of electricity (kilowatt-hours or kWh) a device draws per hour, per day, per week, and month. In the 2 examples below, you will also find how to calculate the electrical bill (cost of running an electric-powered device) using the average price of electricity ($0.1319 per kWh). Here … Read more
We usually choose an air conditioner based on BTU and room size. However, when we’re trying to estimate energy costs, it’s very useful to know how many watts our particular air conditioner use. Air conditioner wattage is not the easiest information to come by. Not knowing how many watts does a 5,000 BTU air conditioner … Read more
The No. 1 expense of the air conditioner is electricity. There are several ways to reduce how much does it cost to run an air conditioner. The two main ones are: Buying an air conditioner with a high energy efficiency rating (EER, SEER, CEER ratings are valid specifications). Reducing the number of hours per day … Read more
SEER is a metric for the general energy efficiency of air conditioners. If you don’t already know what it means, don’t worry. You’ll find out here – keep in mind that you need to understand what SEER means and what is a good SEER before you go shopping for air conditioners. What does SEER mean? … Read more