this post was submitted on 29 Jul 2026
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Chapotraphouse

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They came in this morning and they were like "yeah we're going to need to put in a second return vent in the floor" which was kinda off putting because I didn't know it was gonna have to go on the floor, so I was kinda uhhhhhh but do what you gotta do about it, then they came back and said they'd do two smaller vents instead, then they came back and said they'll just widen the existing 16x20x1 return to a 16x25x1 and I was like yea i mean whatever works for me as long as it's set up how it's supposed to be, and they were like yeah it'll be fine like this

Y'all the lying machine says that's basically good for 800cfm and maybe "up to 1000-1200cfm depending on how the system is engineered" but it needs like 1200cfm by design. That's half the reason we were paying to replace the existing shit before it breaks, it's been operating with half the necessary airflow for 10 years

Anyway idk I guess I'll ask them what's up with that, but like, fuck I am tired and unqualified to be dealing with this

update: i have spoken with the hvac guys and they too are unqualified to be dealing with this, they said a mysterious guy on the phone with the license was the one who told them they just needed to add 5 inches of space to the return vent, but like, yeah, that conflicts with all the other information I have and also the guy who came out to do the quote said it'd need another return vent

if the llm is being accurate at me my understanding is it needs something like another 14x20 vent

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[–] Ferrous@lemmy.ml 8 points 1 day ago (1 children)

It's a fair question to ask them why they're flip flopping so much. Do they not have a good understanding of return vents? In general, I think you can go hogwild with return vents and make them as big as you want. Youre giving the system every chance it can to breath easy. But obviously the tradeoff here is cutting holes in your floor.

[–] LeeeroooyJeeenkiiins@hexbear.net 8 points 1 day ago* (last edited 1 day ago)

But obviously the tradeoff here is cutting holes in your floor.

Yeah which put me off at first but there's this whole dead space in the kitchen that isn't useful that I realized and pointed out to them after i was initially put off by the floor thinking (which i still said was ok)

The thing is i am not good at confrontation or normal social interaction and without much sleep I'm going to come off as an angry tweaker rambling at them about what the LLM said about airflow

But im finishing cooking stuff for dinner and then i'm going to go be like uh hey what's up with that

update: not sure if it's because i asked a follow up about the return vent at 2pm but this 1 day installation is going to be finished tomorrow

At some point their "we'll have two crews out there" turned into two guys who seem like teenagers but are probably in their 20s and an electrician

[–] infuziSporg@hexbear.net 4 points 1 day ago (1 children)

the reason for 78% of all my posting honestly

Update: the guy came back in saying something about there not being a long distance between the return vent and the unit outside and something about how that makes it fine but said he can add a 12x12 return vent if we want him to which I think would give it on the lower end of adequate airflow but i dunno

i literally do not know if I'm making them do unnecessary work or if the work they're going to do will still be insufficient

I think my biggest lesson from this is any time we get work done and some guy comes out to give a quote I want that guy there when they do shit so i can be like "hey buddy didn't you say..."

[–] LeeeroooyJeeenkiiins@hexbear.net 2 points 1 day ago (1 children)

I fucked up too by not mowing the grass, it's not unmanageably tall but I'm sure they'd have preferred that and boy that's a lot of bits of insulation in the yard

[–] Le_Wokisme@hexbear.net 4 points 1 day ago (2 children)

clippings everywhere is probably worse than grass that's a little taller than a football pitch

it's uh, a bit taller than football field grass, I should have mowed like a week ago probably but like, effort, also it's variably either too hot or too rainy or both

I just don't imagine they'll be able to clean up all the shit i'm seeing even if they're trying their best and it's in part because the grass is kind of high but idk I don't know their work so maybe they've got it figured out

I think they're coming back from lunch now so I get to go ask why it seems like they're severely fucking up with this return vent deal (again, according to what i'm being told by the llm)

but I also mentioned to the guy who came out to do the quote something about having a media filter cabinet because I like the idea of actually being able to use one of those fancy high MERV filters they sell but which fuck up literally everyone's HVAC systems, and my understanding is one of those would effectively reduce the needed airflow, so, like, I dunno, maybe they're doing that

it's just if all it is is going from a 16x20 to 16x25 return vent the llm's telling me that's just half a square foot of surface area added and it needs 4 square feet total to handle 1200cfm, which would be like, yeah, a whole extra return vent

also if you take the clippings from your yard you're robbing your yard of precious nitrogen yells-at-cloud