Yes a larger return may help but just making the grille larger the way it is designed will not be a larger return air. Only so much air will go up that wall cavity. You may try adding another...
Type: Posts; User: m kilgore
Yes a larger return may help but just making the grille larger the way it is designed will not be a larger return air. Only so much air will go up that wall cavity. You may try adding another...
That most likely will not help as you can only get so much air to move up that wall. Looks like a 14x6 grill which should be all that space can handle.