Next property was an unexpected $5,500 for a furnace and duct work.

The asbestos wrapped heating pipes as well as the asbestos wrapped discontinued ductwork in the basement should be professionally encapsulated or removed. 5.

It costs me 3200 with ductwork and electric.  

It's a two family so both furnaces I want to change but since I have duct work I would get a unit for both ac and heat.

For example, in one of our properties, an older duplex, we recently had to replace both AC units as well as some ductwork to the tune of $11,000!

Doors (interior): est 15 doors, 2700Windows (18): 7200 (real bid not estimate)Drywall: 13000Painting (interior): 8100Electrical: bids from 11k-21k includes all fixtures, outlets, etc…Plumbing: 11k-18k (including new water service 1” pipe, and all fixtures)HVAC: 22k (new systems, new ductwork) This also seems high to me, thoughts?

Several of the source properties need new heating and a new central AC including duct work. 

Pay roughly $6,000 per unit ($18,000) total to have ductwork and brand new 1.5 AC units installed outside)2.

So we put in new heating and cooling plus duct work, brand new kitchen all new laminate flooring plus a third bathroom.

It might be that the moisture is coming from ductwork that's not insulated, since it is in an attic.