I was feeling wonderful and reading a book the other day when I noticed that it felt a lot hotter and a bit muggier than usual, despite having the cooling system set below 73 degrees. Most of the time I have our Heating, Ventilation, and A/C method always ran tests on and hadn’t noticed any concerns or problems in regular use over the past two years at least. I strolled up to our control equipment to learn the temperature display and was shocked with what I found. The temperature in the apartment was several degrees higher than what I had set to the control equipment to. The cooling system was running all the time however the air coming out of our vents didn’t feel truly cool to the touch. I realized that something wasn’t right, but I had no way of knowing on our own, so I called my contracted Heating, Ventilation, and A/C specialist to check out the problem. Thankfully, she was able to fit me in the following day and she arrived right on schedule ready to get to working hard. She ran all of her familiar tests and finally diagnosed the pressure of the system. Right away, she told me that it was low on refrigerant. Unlike fuel in a car that is consumed as it starts the car’s engine, the refrigerant in an cooling system stays in a closed loop as it is always changing from a liquid to a gaseous state and then back to a liquid, and so on. However, there are spots where the refrigerant can leak out, and in our case, the leak was from a cracked evaporator coil. Unfortunately, she had to order the part and schedule the repair for the following week, but she was able to top off our unit with new refrigerant to get me by until she comes back. I’m very happy I caught the problem before it caused irreparable destruction to the rest of the unit.