Ductwork sizing

I am looking for confirmation on some of the info I have found and answers to a few missing pieces. This is regarding wire size and conduit size for service conductors from the meter to the breaker panel (about 30 ft away). Wire Size: 125A service needs #2 copper or 1/0 aluminum -- #6 copper...

I recently moved into 2 yr old house with Weather King (made by Ruud or Rheem?) 92% forced air furnace. The basement is unfinished & I have noticed supply ductwork popping, apparently due to expansion/contraction, on heatup & cooldown. This wakes me in the middle of the night. I would like to...

I really wish I would've this site before all this started, but here goes: My wife and I have a seven year old home, 1850 square feet, plus about another 850 square feet of above-ground walkout basement (with crawl space below basement). The original Trane XB1000 2.5 ton outdoor unit which was...

I am currently installing a stacked washer/dryer in my 2nd story bathroom. The only option for me to vent the dryer is up into the ceiling and down through the soffet. Is there a problem with the dryer vent being vertical until it reaches the ceiling? Since it is a stacked dryer, the vertical...

I have flexible ducting for my heat and air and my house is about 11 years old. All of the tees and branches from the main duct lines are connected by duct tape, which is now starting to give and come apart. There seems to be metal or aluminum tubes inside the duct at the connections, but the...