LsFarm wrote:Get your installer back on the job and have him do the job right.
Ditto. Its definitely letting air out in your basement somewhere. I believe you called here yesterday. You have to find where you are loosing air to the basement. Who did the install was it done by a knowledgeable HVAC tech or DIY. You need to make sure the air travels where you need it. You may need louvers or a baffle plate to prevent reverse flow. Do you have the return air from upstairs hooked to the AK110 fan ?