In Europe, Asia, and most non-US countries, we measure the size of the air conditioner in kW (kiloWatts). Before we buy any AC unit, we have to figure out how many kW air conditioner we need. To help out everybody sizing air conditioners in kW, we have prepared these 2 easy-to-use resources: Air Conditioner kW … Read more
In 2023, the SEER rating was replaced by the SEER2 rating. Because the now old SEER is numerically not the same as the new SEER2, the old SEER savings calculator cannot be used as the SEER2 savings calculator. To compare air conditioner and heat pump cooling costs in 2023 and onwards, we need to use … Read more
SEER and tonnage are undoubtedly #1 and #2 metrics when it comes to picking an air conditioner. We found that there is quite a bit of confusion about AC tonnage vs SEER. Namely, SEER and tonnage are not connected; a 16 SEER unit doesn’t cool better than a 14 SEER unit. Here is why we … Read more
Modern mini splits are considered the most efficient type of air conditioning. We are going to look into how much does it cost to run a mini split per hour for 9,000 BTU, 12,000 BTU, 18,000 BTU, 24,000 BTU, 30,000 BTU, and 36,000 BTU mini splits. Based on that, we will look at how much … Read more
Let’s say that you have a 1.5-ton air conditioner. You what to know how much you will have to pay to run such an AC unit. In the article, we will help you figure out how many watts does a 1.5-ton AC unit and how you can calculate the running costs. Further on, you will … Read more
When you are trying to figure out the size of HVAC devices such as air conditioners, you will sometimes need to convert tons to kW (kilowatts). Converting tons of refrigeration to kW is very easy. To help you out, we have created an easy-to-use ton to kW calculator that automatically converts tons of cooling to … Read more
Alright, there are many times when you will have to convert kilowatts or kW to tons of refrigeration. Luckily, converting kW to tons is dead simple. To help you out, we have created a kW to tons calculator that automatically converts kilowatts to tons. Further on, you will also find a kW to tons conversion … Read more
How fast does an AC cool a house? The key question we have to answer is how long does it take to cool a house by 1 degree. Based on that, we can calculate how long should it take to cool a house from 80°F to 72°F or by 2 degrees, for example. As you … Read more
ESEER is one of the most accurate metrics for determining the energy efficiency of air conditioners. In HVAC, we already have a lot of these ratings; you might be familiar with EER and SEER ratings, some may even have heard of CEER and IEER rating. Example: A portable air conditioner can have an EER rating … Read more
In HVAC, we have several metrics that denote the energy efficiency of air conditioning units. These include EER, SEER, CEER ratings. The newest – and the most accurate – addition to the family is the IEER rating. The IEER rating is slowly replacing the old EER rating and even the newer SEER rating. Here is … Read more