I've wondered the same thing about treated lumber. A few years back, I built a deck using pressure-treated wood, thinking I was set for at least a dec...

We zoned our system about three years ago, and honestly, the comfort difference was night and day. Energy bills though...eh, maybe a slight drop? Noth...

Been there, done that... and still twitch a little thinking about it, haha. Did you check your city's website yet? Mine had a surprisingly clear check...