Grow room heat issue

it got very hot outside and made my grow rise to uncomfortable temps so I attached an air conditioner/ de-humidafier. kinda hard to do when the air conditioner has 5in ducting and nobody makes 5 inch ducting. 4in and 6in. so i packaging taped the hell out of it. I have gorilla tape on the wye vent for now in till I but new duct clamps.