Kilowatt to horsepower conversion is one of the most common ones. Here’s how you can convert kW to HP: 1 kW = 1.341 HP The easiest way to remember the kW to HP conversion formula is to remember how many kilowatts is 1 horsepower of energy: 1 HP = 3/4 kW We’ll convert kW to … Read more
CFM or Cubic Feet per Minute is a unit for airflow we use in HVAC calculation. Most commonly, we need to calculate CFM for a room for fans, air purifiers, air conditioners, and so on. Example of a question LearnMetrics’s received: We have a 300 square foot standard bedroom. How much CFM should a fan … Read more
kVA (kiloVolt-Ampere) is a compounded unit. It’s comprised of both electrical potential (Volts) and electrical current (Amps). 1 kVA is a frequently used unit; it represents 1,000 Volt-Amperes. In many cases, it’s useful to convert kVA to amps. The most common question here is ‘How many amps is x kVA’. To calculate the amps, we … Read more
One of the most frequently needed electricity conversions is kW (kilowatts) to Amps. kW is a unit of measure of electrical power (wattage). Ampere (A) is a unit of measure of electrical current (amperage). To convert kW to Amps, we can use the equation for electrical power: Power (kW) = I (A) * V (V) … 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. How to compute electric consumption? You only need to know the wattage of the unit, and how long you run it at that wattage. In the 2 examples below, you will also … Read more
In the world of HVAC, heating and cooling device capacity is given in either: BTU (British Thermal Units) or, Tons. Converting BTU to tons is very easy if you know how many BTU in a ton. Here’s the key thing to remember: How many BTUs in a ton? 1 ton is equal to 12,000 BTUs. … Read more
When it comes to heating devices, there is no single specification more important than the HSPF rating. HSPF rating is the key metric for all heating devices; be it heat pumps, furnaces, or water heaters. Understanding it gives you the fundamental insight into all heating devices. In fact, it’s so important that every larger heating … Read more
Example: A 1500 watt heater is running on a standard 120V. How many amops does it draw? Exactly 12.5 amps. How to find amperage or amps from watts? To convert electrical power to electrical current (Watts to Amps), we need to use the electrical power equation: P = I × V or Watts = Amps … Read more
Here’s a bit of the history of how CADR rating was invented: In the 80s, all talk with air purifiers was about maximum airflow (measured in CFM) and filters. But nobody really could tell how effective this or that air purifier was at actually removing pollutants such as dust, smoke, mold spores from indoor air. … Read more
ACH or Air Changes Per Hour is a metric that tells us how many times an HVAC device can fill up the full volume of a room with air. This is especially useful when comparing different air purifiers or air conditioners. Example: Let’s take an air purifier with 250 CFM airflow. We put it in … Read more