as a suggestion Run 17on/7off hr’s
run ur room at night, off in day, for example my off time is 11am-back on at 6pm , reason = hottest part of day so this reduces chances in winter of too warm, in summer It’s hottest part of day and my electric company charges in summer-fall 2x rate for 11am-6pm ( check ur rates and times , u would be surprised )
reason why I endorse 17/7 vs 18/6 is in one month ur saving In power of room almost 2 days in full. like harvesy smith from npk and many Dutch explained there’s no proof that extra hr will help ya if anything do u like to crack out and get less sleep? plants need their ? too
to keep ur temps at bay have a intake of fresh air on Duct + inline fan + temp on/off controller =I set mine at 82f and when it hits that the fresh air connected to hepa will bring it in till it’s under that temp. i just have it on last two he’s before shut off that the temp controller on/off ( on a timer) because I want the room to be slightly warmer before lights off so that whole 7hrs it can stay above 10 degrees of on cycle. 70-72f at lowest
Amazon product
electric heaters and playing that sort will really hurt ur over all cost but also un needed. If you have proper dehumidifiers also that will produce you your heat for night time, if your having heat issues with too much have ur deh in lung room and try to vent the heat outlet out. just saying if ur air at night is below 75f ur set and i would pump that in vs having hvac and all that at small scale growing.