@Steven Fowler, I bet your evaporator coil was clog with dust and if they have any pets with pet hair.

But I found there are numerous kinds of nailers.

(because we're renovating as we go) but I expect to be in the 45% range once done.Mike, one pic of the furnace shows what appears to be a regular boiler with coil hot water.

If the condenser is gone, I assume the system needs to be replaced (since it can be tough to match coils from existing systems).

A sledge or dead blow hammer will be sufficient for the minimal amount of breaking up concrete that needs to be done.Sewer lateral notes:Prep:With plastic sheeting and some scrap luan, I used an air nailer to nail the luan to secure the plastic to the joists (not necessary unless basement is finished or there's a lot of stuff in the basement).

Plus, when installing it, the trim carpenters often complain that the nails drive right through the material (even when they've adjusted their nailers to not set the nail so deep).

pexsupply.com is where i get my stuff. super cheap compared to HD. they also have 5% off coupon codes online too.i just buy the sticks from HD. i hate the coiled stuff. too stiff to work with.

We picked up 3 air + cased coils on a auction 2 weeks ago.

using flooring nails and a power nailer which is the best way to go. so you don't beat the wood with dents from missed hammer blows.but if all you have is a hammer have at it but be careful.ok now for the staining.I recommend you get three cans of stain all of which should be close to your color of floor. going a little darker but not lighter. if you use three colors lighter by a shade if you use four colorscarefully use a darker shade against the nearest board of the old floor followed by your lightest shade followed by another darker shade followed by the middle shade. be sure to stay in the lines of the board and try not to go astray.actually using a rag turn it but dont worry too much about keeping your colors too separated the more contamination of stain from board to board the better it will give more illusion of uniformity in contrast this sounds contradictory to what I said about staying in the lines.

The HVAC was bad, including the A coil.