If you don't use a scale every time you add or remove refrigerant, I suggest you begin doing so immediately, if not sooner. Weighing in while charging is fairly obvious, and it's useful so you can keep track of what you are using and how much to charge a customer. When you have a system […]

Many techs may not all know what SEER exactly means or how it’s calculated, but we know that it exists, is regulated by the government, and has something to do with efficiency. SEER is the standard efficiency rating of central air conditioning systems, and its values are determined from a controlled set of testing conditions. […]

How does a typical motor know how fast to run? Typical induction motors are slaves of the electrical cycle rate of the entering power (measured in hertz). Our power in the US makes one complete rotation from positive electrical peak to negative peak 60 times per second or 60hz (50hz in many other countries). That […]