Hi, A technician came by to fix my heat yesterday. All of sudden there was smoke coming up the vents. I don't know what he did but the heat came on and the a/c worked too. Then last night There was no heat air through the vent. This morning I turn On the a/c and there is no cool air through...

I'm about to start wiring a new bathroom. It's gutted and on the ground floor with easy access to underneith. I have limited space left in my main panel for new breakers (new service coming soon), so I may have to move things around for more efficient use of breakers. I want to wire: 1...

I want to run a 4" vent to my bathroom from the central ac. It is located in the attic and above the bathroom. I just replaced all the ductwork for the whole house. It's probably about less than 4' to the bathroom ceiling. Do I cut into the box and install a 4" collar and run the ductwork or use...

I have a 75 Gallon Natural Gas State Select Water Heater. Model # PR675NRVTZ. It has a fan on top that vents the gas to the outside. Normally, this fan only runs when the water is being heated. Now, the fan runs constantly eben when the water is not being heated. I do not have the wiring diagram,...