The flow of natural gas and propane is sometimes expressed in CFHs (Cubic Feet per Hour). This is a volumetric flow of gas that we use we can find on home energy meters (GFH on the gas meter). Obviously, we want to convert this volumetric flow to heating capacity; namely, we convert CFH to BTU. … Read more
Calculating kWh from amps is quite a challenge. First, we need to convert amps to watts (using voltage), and then we can convert watts to kWh. To make this process easier, we have developed the Amps To kWh Calculator that does all of this automatically. On top of that, we have also checked how many … Read more
In 2021, an average US household spent 886 kWh per month, according to EIA. If you know how many kilowatt-hours (kWh) of electricity you are spending, you can easily calculate how much it will cost (in US dollars). To help you out with this calculation, we have designed a simple kilowatt-hour calculator (kWh cost calculator)ย that … Read more
All electric devices run on certain wattage, but we pay for electricity by kilowatt-hours (kWh). That’s we need to convert watts to kilowatt-hours in order to figure out the electricity cost. To help you with this, we have created a Watts To kWh Calculator and a chart for 10 watts to 10000 watts devices. Example: … Read more
In HVAC, there are established recommendations of how many CFM per BTU of heating and cooling a unit should have. In most cases, we use CFM per ton. However, you can simply convert tons to BTUs to get an idea of how many CFM per BTU is adequate. Based on this, we can convert BTU … Read more
EER rating is the most basic energy efficiency rating for air conditioners. In 2023, the Department of Energy will introduce a new EER2 rating that will replace the existing EER rating. Let’s look at what the EER2 rating is and what changes we can expect for the minimum EER rating in 2023 (now EER2 rating). … Read more
Air conditioner energy efficiency ratings are changing. Up till the 31st of December 2022, we using the SEER rating to determine the energy efficiency of air conditioners. From the 1st of January 2023 onward, the SEER rating will be replaced by the SEER2 rating. We are going to look at what SEER2 is and how … Read more
In HVAC, we deal with a lot of energy efficiency ratings. In order to determine energy efficiency as accurately as possible, new metrics are being introduced over time. HSPF2 rating or Heat Seasonal Performance Factor 2 rating is just such an example, and it goes into effect on the 1st of January 2023. This change … Read more
How to convert PSIG to PSIA? In HVAC, we mostly deal with PSIG (gauge pressure). All refrigerant pressure temperature charts, for example, include PSIG instead of PSIA. For everybody who needs to convert PSIG to PSIA (absolute pressure), we have created a simple PSIG to PSIA calculator (insert PSIG, get PSIA) as well as a … Read more
In HVAC, we are mostly dealing with PSIG pressure (gauge). That’s why we often need to convert PSIA to PSIG. Both are pressure units in the avoirdupois system; we will look at how they are different and how simple it is to convert PSIA to PSIG. To help you out, we have included a simple-to-use … Read more