Sep 28, 2022 · Blocking return air vents in your HVAC system can lead to air leaks due to high pressure differences in the ductwork, potentially causing duct implosion. This air blockage also risks the HVAC unit itself, as insufficient airflow can damage an air conditioner unit by causing pressure imbalances.

Sep 22, 2021 · If the room is sealed, you'll going to get very little to no air into that room. If you open the door, that door will act like your return and you'll be able to get air flow into the room. So it all depends on how "leaky" your room is.

Nov 15, 2024 · When a home lacks return air ducts, the entire HVAC system—and ultimately the home’s indoor environment—can suffer. In this post, we’ll explore why return ducts are so important, the specific issues caused by not having them, and potential solutions for homeowners facing this common problem.

Feb 4, 2022 · The first thing he noticed is that there are no return vents anywhere in my single story house. There are return ducts under the furnace in my garage, so at one point (house built in 1962) they went somewhere.

Jun 10, 2008 · All returns need airflow through them, no air in means no air out. If only one is pulling air that means you probably have too little air flow through the air handler, reducing performance and efficiency.

If no return duct was ever installed, I imagine you’re very uncomfortable in this place. (And probably wasting a lot of energy, too!) There are a couple of ways to fix this, one of which is to install returns directly to the room itself.

Jun 18, 2021 · There's no intake duct. Instead, the air handler has filter at the bottom and takes the air from the closet open space. Over time, the dust accumulates at the bottom of closet so I clean it every time when I change filter.

Noticing these hot and cold spots indicated that something is wrong with either your HVAC unit (air conditioner, furnace) or you have inadequately sized return air ducts (too big or too small).

Nov 16, 2022 · Return air ducts are air passageways that pump air out of a room and into an HVAC system. Once the air is returned to the HVAC system, it will be re-heated or re-cooled and then sent back into the home through a supply duct.

Apr 23, 2011 · It's a cheap, POS way to connect a return duct to a horizontally mounted air handler. Should you flunk it if you see it on an inspection? Only if it's directly responsible for causing a system to not work correctly. For that you'll need a pro to evaluate the system for making that call. Psychrometrics: the very foundation of HVAC.