EnviroJohn t1_j2pkngq wrote on January 3, 2023 at 1:35 AM Reply to Something is causing CO2 buildup in part of the house- how do I secure the windows so I can ventilate it? by [deleted] What is the source of the CO2? Have you had your HVAC system checked? Could be a cracked heat exchanger. Permalink 0
EnviroJohn t1_j2pkngq wrote
Reply to Something is causing CO2 buildup in part of the house- how do I secure the windows so I can ventilate it? by [deleted]
What is the source of the CO2? Have you had your HVAC system checked? Could be a cracked heat exchanger.