Been browsing around some of the other threads on RIU, wow, what negative vibes on some of them and even worse, bad advice.
I have spent a pretty penny on my grow room, at least a thousand dollars and that doesn't count the thousand to upgrade my whole service to 200A. I'm probably averaging $275 a month for electric and gas, I have natural gas appliances, so we'll say out of that forty is for gas, so about two thirty five a month for electric during the summer months. Every penny is well worth it. Being able to control the temp and humidity has not only given me better plants, it gives me piece of mind not having to worry if my grow space is getting too hot on hot days, which for me is from june to october, I'm talkin' high eighties into the nineties for months on end. I know I'm paying for it out of my pocket, but the peace of mind is priceless. I have less than fifteen minutes till my lights come on, can't wait to see the babies, got my snow storm ultra today, it and some gravity are being fed to the girls this evening.