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 Air Changes Per Hour Calculation (Calculator + Formula)
There are several HVAC metrics for energy efficiency. In many cases, the Energy-Efficiency Ratio (EER) is specified on the specification sheets. However, one of the most basic heating/cooling metrics – Coefficient Of Performance (COP) – is not. Fortunately, you can easily calculate COP from EER (as well as EER from known COP) with these two … Read more Convert EER To COP And COP To EER [Calculator]
Some HVAC devices such as ductless mini split AC units come with a SEER rating instead of an EER rating. If you’re like us and like to compare specification sheets, you can calculate EER if you know SEER. Here is a simple calculator that transforms SEER to EER. Just input SEER rating and the converter … Read more SEER to EER Calculator
EER and SEER both measure the energy efficiency of HVAC devices such as air conditioners and heat pumps. EER = ‘Energy Efficiency Ratio’ measures energy efficiency at 100% cooling load, 50% humidity and 95F to 80F temperature difference. SEER = ‘Seasonal Energy Efficiency Ratio’ measures energy efficiency throughout the summer season (June, July, August). We … Read more Convert EER To SEER Rating (Calculator + Chart)
EER or Energy-Efficiency Ratio is an energy performance rating for cooling devices. You will find them in any air conditioner specification sheet. It’s invaluable when you try to compare different air conditioners as far as energy-efficiency is concerned. What does EER mean? By definition, it provides you with a ratio of useful cooling output (in … Read more Understanding EER: What Is A Good EER Rating For AC?
COP or Coefficient Of Performance is the most basic energy-efficiency metric of any heat engine. It’s very useful when comparing heat pumps, fridges, and air conditioners. By definition, COP is the ratio of how much useful heat (or cold) an HVAC device will produce if we give it certain energy input. Basically, it tells us … Read more Coefficient Of Performance (COP) For Heat Pumps and Air Conditioners