Do you know why statistics are so important? There are many answers, but some say the most important reason is they allow people to predict the future. The Covid-19 virus has caused a sharp drop in the stock market but even that must be viewed over time as the statistics show an average gain of 10% annually over nearly 100 years and many calamities. Baseball is a game driven by statistics. The “gut feeling” of an old tobacco-chewing manager on whether to replace his pitcher is now replaced by a manager who looks like a CEO using statistics like pitch counts, pitcher-hitter matchups and the always reliable ERA to predict the outcome of a single at-bat. HVAC is full of statistics too. The expected life span of a furnace is 20 years, the same as a central air conditioner. Statistics predict that about 58% of homeowners will have problems with their HVAC systems because only 42% of them undergo regular maintenance that will extend the unit’s life up to 40%.Climate scientists use weather statistics to create climate change models that can either scare the heck out of a person or deny that there are any problems at all. Climate statistics can also help you decide if you need a central HVAC system or just a few room units and space heaters. Almost every home in the USA needs some kind of HVAC system to keep it comfortable. Those with systems approaching 20 years of use might consider a replacement. We don’t need any statistics to predict that using the services of an HVAC professional will yield a smoother running and longer-lasting HVAC system.