So this is ultimately a very oddball situation. Some background:

I live in a rancher in southern NJ. Fully electrified home.

I had recently installed minisplits to replace some electric baseboard heaters, covering about 2/3 of my home. This was fortunate, as I believe my blower fan in my central AC unit blew out. The minisplits + 1 window unit have actually been cheaper to operate than the old AC unit, so now I have a vestiegal high-velocity central AC system in my attic.

Namely, this means a lot of unused flexible, insulated ductwork and some ferro-fluids in my attic that should probably be blocked off and drained, respectively.

I've been contemplating on how to possibly repurpose some of this stuff to fix one of the biggest blind spots in my home: ventilation and filtering

My one bathroom exhaust fan vents directly into the attic, which is a moisture hell that needs solved.

There's no other ductwork in my home, and pretty much the only time fresh air gets in the house is if we crack windows or open doors.

So the theory is:

I route the bathroom exhausts into the old air handler coils to help capture the moisture and drain it out, then have it mix with some outside air and recirculate it into the house again.

Alternatively, routing some of the air between the attic/crawlspace/attached garage for preconditioning outside air as as well.

Is this insanity, or a remotely plausible idea? I'm fairly handy, and since its sbeing made with vestigial bits in spare time labor cost is much less of an issue than parts.

I am putting a new surface on my Deck. I am using Trex and 2.5" composite specific screws. These are small head screws with a T20 torx bit.

[img]https://i.ibb.co/MchtXPx/20230628-175119.jpg[/img]

I am 7.5 boards in out of 25 boards and I have destroyed 5 bits, 3 of them brand name impact rated bits. I am making sure to stay cammed in, and weight on top of the screw. I am lining the drill up with the angle of the screw. I am also predrilling every hole.

I feel like I have to be doing something wrong. I just don't know what else to do.

Edit - these are the exact screws I am using - https://www.homedepot.com/p/Grip-Rite-9-x-2-1-2-in-Brown-Star-Drive-Pan-Head-Coarse-Composite-Deck-Screw-10-lbs-Pack-N212CSB10BK/207193648