I have a dad with an unquestionably hard head. And the older he gets, the more stubborn plus hard headed he gets. That’s saying a lot, trust me. This is the same guy who didn’t believe much of anything unless he saw it with his own eyes or the data proved it out. That’s just the way this guy is built. So let me tell you, I went round plus round with him not too long ago over his heating, ventilation and A/C equipment. My folks still live on their own independently however I can see the window for that is also closing. Mom called me at the office which is something she never does. The central gas furnace was acting up plus dad was determined to check it plus repair it himself. He was at the hardware store when she called so I only had a quick window to get there to stop what would be a disaster. Dad is for sure a unquestionably mechanically inclined guy plus did unbelievable on machines of his era. But he is nowhere close to being an expert in anything heating, ventilation and A/C. My father said he would not, under any circumstances, call the heating, ventilation and A/C supplier for something he could fix. Fortunately, I got there just before he did. I had long enough to find the heating, ventilation and A/C warranty so I could confront dad with it. If it’s in black andwhite, dad will at least consider something. The warranty recognizably stated that any repairs or maintenance done by anyone other than a certified plus licensed heating, ventilation and A/C professional would void said warranty. Thankfully, seeing this spelled out in the warranty got him to call the heating, ventilation and A/C supplier to come out. Jeez, that man plus his hard head just about cost himself thousands of dollars.