Scientists have been working on thermoacoustic refrigeration for over two decades. The basic idea is to use sound for refrigeration instead of the current refrigerants that cooling devices rely on. The U.S Navy is interested, and so is ice cream mogul Ben & Jerry’s.

Is your business profitable? It’s a simple question, but for many HVAC contractors their answer is often unsure.

Free speech is back on the chopping block, and the outcomes of recent incidents may have an effect on the social aspect of your business.