Damn!I timed mine today for 6 hours it cost me £2.50 with lights on fans heater the works think it’s costing me £7.50ish a day I need a windmill in my garden lol
Your lights and fans are a constant. I think ultrasonic humidifiers use so little energy, I think they have little impact. You can easily figure that out. Heating and A/C are the big variables. Heating is more expensive for me, but it's a pretty small time I need heating. Most of the year, my lung room needs cooling.
My little package a/c monitors it's power usage and keeps up with the usage. It seems to be very efficient with its dual inverters. It would be even more efficient if it was a two hose version. Being a single tube, it does draw make up air into the lung room. The way I have it set up, it draws from my hallway. It also has a cool and dry cycle. The dry still cools, but dumps the condensate directly to the drain. The cool cycle utilizes the condensate to help increase the efficiency of the condenser by latent heat of evaporation. It does make for VERY stable conditions in both tents in my grow room.
Your tent looks great!!!