Often very dirty) for lingering cigarette after paint (Some odors may stick to the grime on coils until the condensate washes the coils. during ac season. ) Put vinegar and a lttle baking soda in all ptraps maybe.

If the first leak seal doesn't work then usually that means there are multiple leaks, the compressor is bad, the coil is bad, etc and you have to do a more drastic repair/replacement.

The first flip I did, I walked right by the giant water stain in the ceiling, and said "oh that's probably just a few rivets on the metal roof that need tightened."

I ran the gas line & they installed the double intake/exhaust Al pipes to the top of the chimney & added a metal chimney cover/cap with a separate vent cap.

They are CPVC on one side and metal on the other and cost about $4 at Lowes. 

I will get the coil stock from Job X, a couple packs of light bulbs, bring my DeWalt kit, and stop at the plumbing supply house.

We also usually call one of our area junker/metal guys and they will take a lot of metal stuff for free. 

It can even grow on moist metal surfaces with air passing over it. 

I placed a very nice metal sign I had made up in the yard of a rehab I owned and the city came by and took it.

An issue here like some other parts of the country are that most of the main roads have metal lights and no wood poles.