After watching my peeps struggle with various issues we're shifting to Sealed Rooms, and will use some sort of environmental controller(s), AC/heat, humidity control, and lastly add co2, and I guess stop using the A/C hoods as normal, and maybe remove the glass once it's all complete.

Currently outside air is vented in via 6" ducting and fans to cool the room, and we run 8" A/C hoods on separate ducting and a fan, and it works ok, but the temperature and humidity (and thus VPD) swings are too much sometimes, and are sometimes outside of ideal ranges, and the consequences are getting expensive and wastes our time.

The first room we'll be converting, which will be the test bed for the other rooms, is a 256sqft (16x16x16) Flower Room at a caregiver grow, which has 16x 1000w HPS Hoods in it on a double decker shelf system just like Home Depot shelving. This location has plenty of power...

I read in one of the A/C threads here that each 1000w HPS hood is about 4000btu, and that each 1000w ballast is about 2500btu, so I'm thinking of using those numbers to try to size the AC/Heat unit appropriately. What about fans, (de)humidifiers, and co2 generators, do they generate enough heat to matter?

Any other tips as we head down this path for the first time? Any help will be appreciated for sure. I'll be rereading all related threads and trying to piece it all together myself. Thanx.