You can try Roofing.QualitySmith.com i found this with a quick search they offer an on line bidding system. you should ask the roofers if there insured, there experience in roofing, for some referrals also make sure to get several bids. a job like a roof has a lot of labor cost in it so bids will vary. id also get bids on the job with a tear off and an overlay. if your replacing the air cooler then the installer of the new unit should disconnect and remove it properly. roofers might brutally remove it and destroy mounts,connections or duct work and make more repairs for you. plus they may throw it off the roof Ive seen it done.

. $3000HVAC: new furnace, ductwork as nec, AC

It all depends on your setup and current duct work. 

This is a good choice especially for a non-forced air heating system.But as for putting in a central A/C unit, if you already have a Nat Gas furnace, the duct work is already there, all you have to worry about is some degenerate steeling the coolant and breathing it to get "Far Out".I mention that because the newer type coolants (required by law) are very expensive to replace.Good Luck!

There would be no ductwork involved, just copper line sets, power/comm wire and drain lines.

Details : https://www.facebook.com/groups/biggerpocketsofficial/permalink/1004600267177934/Yesterday , PM informed me with HVAC vendor #1 quote , "This house has a bad compressor my recommendation is to replace the complete system 3.5 ton along with separating the upstairs and downstairs ductwork so it will be easier to adjust the airflow.

Me and my husband are in the process of rehabbing a 1980 house (1.7 story, 2400 sqft) which doesn’t have a crawl space and no ductwork in the first floor?

It doesnt lend itself to install duct work .

Some are fairly obvious: portland/asbestos siding, pipe/ductwork insulation, and 9" flooring tiles from the 50's & 60's.Other materials need to be tested to determine the asbestos content (if any) - as in my example above.  

Also,  below I have some basic questions:-Process or possible Roadmap -Get loan pre-approval letter-Issue formal offer-Get offer accepted - go to contract with a 35 day term-Property inspection ---Key areas: building with solid ductwork, plumbing, structural, electrical, etc.