Insulated main duct work is done at the factory with round auxiliary delivery branches. Engineered roof trusses are standard. R-30 blown insulation is standard in the ceiling. All water lines are copper, soldered using lead-free solder. Drain and waste Lines are P.V.C. and meet uniform plumbing code.
All vents are through the roof.
Water heaters are 40 gallon, gas. 2 Exterior frost-proof faucets are standard. 2 Exterior GFI receptacles are standard. All Interior doors feature 3 mortised hinges to prevent warping. All fixtures have water shut-offs installed.