I NEED A VENTILATION IN 2 OF MY ROOMS DOWNSTAIRS DUE TO HAVING A FLUELESS GAS FIRE IN BOTH ROOMS. MY CURRENT VENTS ARE AT THE BOTTOM FOR SOME REASON AND I NEED THEM GOING HIGHER AS I AM LED TO BELIEVE AS HEAT RISES, THATS PART OF MY PROBLEM WITH ALL THE CONDENSATION IN THE ROOM I HAVE HAD.