Something is causing CO2 buildup in part of the house- how do I secure the windows so I can ventilate it? Submitted by [deleted] t3_101i0du on January 2, 2023 at 5:21 PM in DIY 54 comments 15
EnviroJohn t1_j2pkngq wrote on January 3, 2023 at 1:35 AM What is the source of the CO2? Have you had your HVAC system checked? Could be a cracked heat exchanger. Permalink 0
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