Hello folks. I'm in the process of replacing an aging battery-powered programmable t-stat with a new Nest unit. I have read some reviews stating that the best results are had by using a "C" wire to keep the unit with enough power. Nest says you don't have to use one, since the unit scavenges...

Hi everyone. I wanted to add a pic each in JPG format as the front page of some of my PDF files for an assignment but I can't a tool to do this without having to re code the whole PDF file! This is taking too long. Is there any way round?

Hi, I am in the process of adding insulation to my knee-wall's in a 1952, war time, storey and a half home. There is existing insulation (fibreglass batts R7) on the knee-wall which I want to cover with an R-10 ridged board. I will then blow in insulation on the floor of the attic space to...