When metal is used for the dryer vent ductwork, the joints between metal sections are NOT to be held together with screws; screws protruding into the dryer ductwork will trap lint.

I have a duplex built in the 50's I noticed that a similar duplex down the street was for sale and upon viewing the pictures I noticed it had a washer dryer hook up stuck in the utility closetthe owner moved the hot water heater to the left and and expanded the space I decided to do something similar in my unitsI actually used one of the hall closets there are two in the unit one near the kitchen and one outside the bedrooms I decided to use the one nearest the kitchen and ran plumbing and electrical to the closet widened the opening to accept a stack washer and dryer and installed vent holes and duct work to remove the lint.from the dryerof all the things I did in my unit from tiling to new lighting and laminate flooring over carpetprospective tenants seem to appreciate the washer dryer hook up the mostI think a close second is the laminate flooring but I wont know until it is all down and I have my first looks.this is probably old news to you veterans out there about converting a closet into a washer dryer room but I am a newbie and just happened to stumble upon this idea when I saw my neighbors house otherwise I may never had had the inclination to do it.

Also check the ductwork if it's in a crawlspace.Pop the electric panel cover and see if anyone's messed with anything.

Electric and Gas are on and we are starting with the installation of the Furnace and A/C unit as well as applicable ductwork that needs repair.

They replaced the roof, put in new HVAC duct work and several other items that were installed AFTER the fire.

The garage is partially converted and I was thinking about having it framed in adding a window and siding to close it off, it already has ductwork ran into the garage.

I needed a new flat roof, plus I replaced all furnaces and AC condensers, mostly new ductwork.

In installing, the contractors drilled through the exterior vinyl in order to add duct work for external venting. 

We were never asked about the ductwork prior to sale. 

New furnace is installed with duct work run throughout with new vents in each room.