HVAC thread: No returns, supplies are limited.

The Something Awful Forums > Discussion > Hobbies, Crafts, & Houses > HVAC thread: No returns, supplies are limited.

Spookydonut: Sep 13, 2010; "Hello alien thoughtbeasts! We murder children!"
~our children?~
"Not recently, no!"
~we cool bro~

We have ducted reverse cycle A/C and I was recently in the roof, and the ducts look badly positioned and not very straight. Should the ducts be the shortest path with minimal bends or is there some weird air/fluid dymanics thing where there should be a bunch of bends?

I'll try and get a photo of what I mean but it's currently summer and hot as gently caress up there.

# ¿ Feb 19, 2017 04:09

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# ¿ May 16, 2024 15:12

Spookydonut: Sep 13, 2010; "Hello alien thoughtbeasts! We murder children!"
~our children?~
"Not recently, no!"
~we cool bro~

ExplodingSims posted:

Reverse Cycle = Heat pump right?

Ideally, yes, you want your ducts to be straight and avoid bends when possible. More bends = More turbulence and poorer air delivery.
In reality, most installers don't give a poo poo and install terrible spaghetti monsters.

Yes apparently reverse cycle means a heat pump.

How hard would it be to rearrange it to straighten out the ducts?

http://imgur.com/a/hBmAA

# ¿ Feb 19, 2017 05:19

Spookydonut: Sep 13, 2010; "Hello alien thoughtbeasts! We murder children!"
~our children?~
"Not recently, no!"
~we cool bro~

coyo7e posted:

If you're loving with venting up in the attic, you could very well be depressurizing the home's shell and either pulling in gases from below the crawlspace, or accidentally forcing furnaces and other stuff with gas-fed pilots, or fireplaces etc, to blow out or in-vent.

I hope you know a lot about pascals

It's a single story house with no gas or furnances (Australia).

ExplodingSims posted:

It's not impossible, but it would be a fair amount of work. By the time you're talking about cutting, rearranging, and reconnecting all the ducts, you'd probably have a much easier time just getting new ductwork.
Especially since it all seems to be ductboard and flex, which is cheap and easy to work with. But judging by that picture, it looks like it's a mess already.

The best setup for something like that is to have one solid ductboard trunk, that the flex comes off of to individual drops. The flex should be pulled taught and supported from the rafters, ideally staying straight as possible. Also trying to avoid those box plenum things. And from what I can tell, your setup has none of that going on.

This is what I was afraid of. The guys who installed it were apparently really poo poo.

# ¿ Feb 19, 2017 05:55

Spookydonut: Sep 13, 2010; "Hello alien thoughtbeasts! We murder children!"
~our children?~
"Not recently, no!"
~we cool bro~

coyo7e posted:

to worry about checking the filtration etc in their home HVAC system.

I cleaned my gf's filter and it had like a quarter inch of cat hair caught in it. Now the intake doesn't make this droning/screeching noise and the flow from the outlets is like 3x better.

# ¿ Jun 4, 2017 17:55

Spookydonut: Sep 13, 2010; "Hello alien thoughtbeasts! We murder children!"
~our children?~
"Not recently, no!"
~we cool bro~

Mr. Powers posted:

I just don't like getting near a cap that large that may have been charged at 220v. The meter I have at work I can bring home and use. I just don't like giant caps.

Get a cap discharger

# ¿ Jul 24, 2017 03:43

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# ¿ May 16, 2024 15:12

Spookydonut: Sep 13, 2010; "Hello alien thoughtbeasts! We murder children!"
~our children?~
"Not recently, no!"
~we cool bro~

Mr. Powers posted:

Is that just a metal bar with a nice thick rubber grip?

Something that has resistance is safer.

# ¿ Jul 25, 2017 03:27

The Something Awful Forums > Discussion > Hobbies, Crafts, & Houses > HVAC thread: No returns, supplies are limited.