Is the insulation around the duct work in good shape? 

Hi so my duplex that I just bought needs an upgrade with the HVAC unit, I am replacing the window unit and electrical radiant heat with a central ac, i got a bid for 7.5k wanted to know if that is a good bid for new HVAC unit, duct work, heat pump and installation?

. $9k for both sides is not outrageous, however it's a tad steep for Florida - unless there's copper replacement, ductwork, etc.

As an example a price guide may say windows are $200 a window you see 18 windows and base your budget off of that but do the windows need aluminum capping or any additional framing. price guide says furnace $1500 but do you need duct work or additional gas lines or vents.

Then he sprayed coil cleaner on the coils.It more than doubled the air flow, and it was something I could have easily done myself, except that he pulled the unit out of the case in order to reach one side, and I probably wouldn't have risked doing that for fear of damaging duct work or plumbing.The furnace needed a new sequencer and the outside unit got a diagnostic to make sure it was OK.

Then they stole the A/C condensor out of my furnace, busted up the ductwork doing so, took the condensor line to the outside, and took all the important parts of the outside A/C unit (pictures below).

Aren't they ductwork chases or something?

Overall, Kilz original (oil-based) stops everything.Also - don't forget duct work if it was already present.

So we installed a new furnace to serve unit 1 and modified the ductwork for existing furnace to serve unit 2.

After some deliberation, I decided to let it go and let them get away with February for free in addition to all the months they'd been owing before that.Now that the deal had closed, I gave her a choice on the heat: either have handymen busting up the floors and ceilings for a couple weeks to lay new duct work, or install new electric heating.