My little sister does some really stupid things sometimes. She means well, but she doesn’t think about her actions until it’s too late or have enough responsibility to repair the situation. I blame it on my parents. They always babied her and cleaned up her messes for her. Because of this, my sister never learned true responsibility. When she bought her first home, I knew it wouldn’t take long for her to do something that would force my parents to dig her out of a hole. It only took 3 weeks for her to run her 4 year old HVAC system into the ground, causing damage that was so severe, she needed my parents to help her make her first mortgage payment. For some reason I can’t understand, my sister closed all the air vents in her home except for the one in her master bedroom. This caused so much pressure build up in her ductwork that her ductwork cracked in several different places. Even her heat exchanger cracked! My parents called their HVAC guy right away and asked him to come rectify the situation, which wasn’t cheap. He spent all afternoon at my sister’s house trying to fix everything, but ended up saying she’d need all new ductwork and a new heat exchanger. I wish my parents hadn’t called their HVAC guy or helped my sister financially, because it’s only making the situation worse. She’s an adult who just bought a home, she should’ve been able to call the HVAC professional herself and found the money another way. She’ll never learn with their help.