Do you know what’s easy? Calculating subcooling. It’s a piece-of-cake calculation. We are going to explain exactly how to calculate subcooling in much the same manner as we explained superheat calculation with R-22, R-410A, and R-134A examples here. In this article, you will similarly get 3 key resources that will explain everything to know about … Read more
Calculating superheat in HVAC is super easy. We only need 2 temperature measurements and a minimal amount of math. We are going to show you exactly how to calculate superheat. To help you out, we have prepared these 3 valuable resources: Superheat Formula. This is a very simple equation anybody can use to calculate superheat … Read more
Let’s learn exactly how to measure subcooling. Measuring subcooling follows a very similar procedure as measuring superheat (detailed here) but with important differences. We are still going to need 3 key tools; a manifold gauge (red high side part), a clamp-on thermometer, and the easiest subtraction math. Subcooling is measured at the high side liquid … Read more
Measuring superheat is not all that difficult. All you need are a manifold gauge, a clamp-on thermometer, and a bit of math. We will show you exactly how to measure the superheat for any air conditioner (central air conditioner, split system ACs unit, etc.). We are going to include a step-by-step way of how to … Read more
Superheat is one of the most commonly used terms in HVAC. We use quite a lot of superheat and subcooling calculations as the No. 1 air conditioner diagnostic tool. It is only appropriate that we adequately define what superheat and what subcooling are. Example: You will very often see an HVAC technician with a manifold … Read more
If you have a small room, you don’t need a big portable air conditioner. To avoid unnecessarily getting bloated, expensive, overkill units that could short cycle in a small room, we have looked at which are the smallest possible AC units. You can find a list of the 4 smallest portable AC units on the … Read more
To cool a small room, you need a very small window air conditioner. We are going to check which are the smallest air conditioner window units on the market, based on a spec-by-spec and dimension-by-dimension analysis. You can find a full 5 smallest window air conditioner comparison chart, complete with reviews, further on. Now, the … Read more
Do mini-splits use a lot of electricity? Well, that’s relative. To answer this question adequately and fully, we have to calculate the mini-split power consumption. This will help up estimate how much will running a mini-split increase our electricity bills in the summer (cooling) and in the winter (heating). We are going to take an … Read more
If you get the 1st quote for a 10 SEER air conditioner or heat pump, and the 2nd quote for a 14 SEER unit, you will have to do a bit of math. The best way to decide which unit is a better option – 10 SEER vs 14 SEER – is to pencil in … 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