We are in the market for a new furnace and A/C, and are currently getting a fair number of estimates. 2 so far, 4 more scheduled in a week. Of the 2 I've talked to so far 1 poo-pooed it, saying they've gotten notices from distributers that units need to be rest manually (take off, put back on) often. The other said it's OK, but they do a lot of Honeywell wifi ones work great with their units, implying the Nest won't be able to take advantage like the Honeywell will. Does anybody have experience with the Nest, one way or the other?