Frankly, I don't know why you'd want to keep a tree so extensively afflicted with powdery mildew that it's snow white. But, it's your tree. You decide. Here is a link that might be useful: your photo

Not enough info provided here. Either a faulty thermostat that is providing a false positive error message or a problem with HP. I would shut system off and call your Installing dealer for a service call. IMO

Hi, All, I just found a bunch of important PM from the Houzz forum in my email spam folder. For some reason, I could not read them on my Houzz home page, but when I retrieved them from my email spam folder and sent them to my mail, then opened them, I found them. So perhaps if you PM anyone, do let them know on the regular thread so they will know to check their email including the spam folder. This started to happen this week. Fortunately, I often go through my spam folder before it gets deleted without my seeing it. Joanne

I sent you a Houzz message last week regarding 52 items, but I haven't heard from you. Did you receive it? This message was in response to one you sent me. Debra