Your home’s HVAC system is going to be critical to keeping your house cool this summer. The Old Farmer’s Almanac predicts that July and August will be extremely humid and sticky this year, so making sure your HVAC system is running smoothly will be the key to your comfort. So, it would be best for homeowners to check their heating and air conditioning units before 90-degree weather hits. Here are few ways to know if you are in need of HVAC repair. Freon Leakage. The main refrigerant in your unit is Freon. In most cases, this will never need replacement…