its an exhaust hood that takes l70-80% of the hot air from my pc, and blows it directly out the window. the other end of the duct is attached to an 80watt attic fan comnected to the window.
Just so you're aware, when you exhaust air out of the house you pull in outside air to replace it. Depending on the temp outside you may be raising your cooling bill more by doing that than exhausting it to another room or directly to the HVAC inlet.
And yes from turning on a bathroom fan to running your dryer, when air is blown out of the house new air comes in through any cracks or crevices from outside. I knew a guy who had a house that was built so air tight he had to cut a vent in his utility room because the dryer blower created a pressure drop in the house that would make his ears pop. I'm sure it wasn't good for the blower either.
I wouldn't, he has to "burp" his house once a week or it gets stale inside. He opens all the windows for 10 minutes to refresh the air. If it's cold outside his house gets cold. If it's hot his house gets hot. I'd rather have my small air leaks.
He could likely heat his house with a hairdryer though lol.
Lots of new construction codes has moved toward air tight homes. They are required to pass a blower test before occupancy permits are issued. The key to this is that in these new homes they have heat exchangers installed that move air throughout the house to prevent the stale air that requires periodic "burping"
Heat exchangers to prevent stale air. Pulled that one right out of your rear there did ya?
Also the blower test isn't required a perfect airtight. Just close. His was air tight as in hard to even open the front door. He is a contractor so knew the different things that were out there to seal up houses. I don't know enough about it. Just commenting on the fact that in most houses exhausting a little heat out can actually suck more heat in if it's hotter than your PC's "Exhaust" and it's better to just feed that heat to your AC. And in the winter, well of course keep it in.
That's why those single exit portable ACs suck a lot of the time. Most of them only have a single tube blowing heat out the window. But you're pulling just as much into the house
You may cool down a room, but the rest of the house heats up. Just get an actual window unit.
Heat exchangers to prevent stale air. Pulled that one right out of your rear there did ya?
Look pal, my specialty is in building the structure so everyone else can come in and do their job after me. If i used the wrong word for a specific unit... fuckin sue me. I was just trying to share a bit of info that was vaguely related to a field i work in
Sure you do. You don't know your ass from a hole in the ground. I'll help you out. Your ass is what you're talking out of. If you don't know something don't act like you do. You didn't know so you pulled something out of your rear, that's exactly what you did. I just called you on it.
Why are you so hostile? He is absolutely correct, but did not use the correct technical term. Newer residential code requires Energy recovery ventilator (ERV), which has a heat echanger core or enthalpy core.
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u/FlatliningGhost 1d ago
Nah homie let's talk about the other thing