Can You Fix These Common Home System Failures? Test Your DIY Repair Skills!Share:FacebookPinterestTwitterMail2. If your HVAC system is blowing warm air in summer, what might be the problem?8%Next Correct Incorrect Low refrigerant means the system can't cool properly. 2. If your HVAC system is blowing warm air in summer, what might be the problem? Dirty air filter Low refrigerant level Broken thermostat Leaking pipes 8%
