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.

Came home today and found wet clothes in the dryer. Which was weird because earlier, I had found the same load in there wet and just thought I had forgotten to start the dryer. Low and behold, when I stood and watched it, about ten seconds after starting it, it started beeping and gave out an F01 error code.

While googling it, it seemed that the code meant the relay electronics board had failed and needed to be replaced. I thought, I can probably do that, but the board seemed to be more than $150, which is more than the callout fee on our home warranty ($125). But what we most needed was a working dryer!

While looking for the exact price and a source to order the board, I found this video describing a simple fix for a blown solder connection. I unplugged the washer, opened it up, and the board was blown in the exact same spot as in the video. I soldered a jumper in, put it back together, and lo and behold, the dryer runs!

I have an undergraduate degree in electrical engineering, even though it hasn't been my day job in a long time. So I could at least evaluate the plausibility of the fix, and I had the tools and know-how to do the soldering. So definitely not a fix for everyone.

Money is tight right now, so fixing the dryer for $0 (and in half an hour no less) was big for us. Sometimes you need a win, and today was a day I really needed one!

What fixes around the house are you most proud of, saved you some money, or kept a piece of equipment out of the landfill?