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Message
HVAC in New House Blowing Hard
Posted on 7/3/15 at 4:24 pm
Posted on 7/3/15 at 4:24 pm
Just moved into a new house and i love how fast the home cools down, however you can't bare to sit on the couch with the air on. There are 3 vents in the living room that are about 3-4 feet apart, when the air kicks on it will literally blow your hair around. I closed the middle vent thinking this would help, instead it just blew even harder out of the other two vents. My question is, is there anyway to control how hard it blows?
12
Posted on 7/3/15 at 4:29 pm to GeauxTime9
Can you point it another direction?
Also, make sure all the other vents are open in the house. Not that it is a bad thing, but HVAC systems should not blow that hard.
Also, make sure all the other vents are open in the house. Not that it is a bad thing, but HVAC systems should not blow that hard.
Posted on 7/3/15 at 4:31 pm to GeauxTime9
There are usually valves that open and close in the duct themselves in the attic.
Posted on 7/3/15 at 4:32 pm to GeauxTime9
Check to ensure all your vents are open in the house.
Posted on 7/3/15 at 4:32 pm to GeauxTime9
Most new units have variable speed air handlers. They can be adjusted by changing the dip switch settings inside the unit. An installation manual would help.
Posted on 7/3/15 at 4:32 pm to fightin tigers
quote:
Can you point it another direction?
Also, make sure all the other vents are open in the house. Not that it is a bad thing, but HVAC systems should not blow that hard.
Nah, can't point another direction. I may need to invest in some different vents or flip them around to blow the opposite way. Good point on checking to see if others are closed. I check and no others in the home were closed, it is very weird. The upstairs takes forever to cool off (which is usual due to hot air rising), the downstairs cools off in literally minutes.
Posted on 7/3/15 at 4:33 pm to GeauxTime9
I just had a home buyer complain about the same thing. I sent my hvac guy over there and he took care of it. I have no idea what he did but apparently it can be fixed.
Posted on 7/3/15 at 4:37 pm to GeauxTime9
There may be dampers in the duct work that can be closed slightly to reduce flow. If not, something can be installed.
Posted on 7/3/15 at 4:39 pm to KG6
Thanks for the replies, i will look into something in the attic if there isn't already something installed that will help.
Posted on 7/3/15 at 4:42 pm to fightin tigers
What Fightin Tigers said. Residential AC fans typically don't have any type of speed control (unless it's a multi-speed unit that can be adjusted at the air handler, but even then they're still off/on). They're on when the unit is cooling (or the fan is set to "on" by the user) and they're off when the unit is not cooling. The fan doesn't know what's happening in the house or where the air is going, it just blows air until the unit cuts off its power.
You can close down the registers in the room where you want less air flow, but you'll need to open up registers somewhere else to let more air out there, or you risk actually increasing the velocity where you want it slowed down and increasing the noise from the register.
Before you do this, though, might I suggest that f the system is cooling well right now, you take a grease pen or something and mark the position of the registers before you start moving them? HVAC systems should be balanced (set up to deliver the proper airflow to each space) to operate at their best. By monkeying around with the registers, you can end up dumping a lot of your cooling into one small area. If this is where your thermostat is, the rest of the house will likely be hot as hell because it instachills that small space and the thermostat shuts the system down. On the other hand, if you dump the air far from the thermostat, it may never get cool enough at the thermostat to shut the unit down and it'll just run and run.
If you mark or note the position of all the registers and you see problems after you adjust them to get the air the way you want it at your couch, you can always just set them to where they were when the system cooled the house well.
You can close down the registers in the room where you want less air flow, but you'll need to open up registers somewhere else to let more air out there, or you risk actually increasing the velocity where you want it slowed down and increasing the noise from the register.
Before you do this, though, might I suggest that f the system is cooling well right now, you take a grease pen or something and mark the position of the registers before you start moving them? HVAC systems should be balanced (set up to deliver the proper airflow to each space) to operate at their best. By monkeying around with the registers, you can end up dumping a lot of your cooling into one small area. If this is where your thermostat is, the rest of the house will likely be hot as hell because it instachills that small space and the thermostat shuts the system down. On the other hand, if you dump the air far from the thermostat, it may never get cool enough at the thermostat to shut the unit down and it'll just run and run.
If you mark or note the position of all the registers and you see problems after you adjust them to get the air the way you want it at your couch, you can always just set them to where they were when the system cooled the house well.
This post was edited on 7/3/15 at 4:48 pm
Posted on 7/3/15 at 4:49 pm to weadjust
quote:
Move the couch
But then you have to move the TV, and the windows are going to make glare on the TV, so you've got to put some new drapes up, and then the drapes don't match the carpet
and you've got to get the drapes dyed, and then the walls look like crap because of the new drapes, so you have to paint those. Moving a couch is serious business.
Posted on 7/3/15 at 4:53 pm to GeauxTime9
Put your dick in the vent
Posted on 7/3/15 at 5:04 pm to Cosmo
The plenum where all the ducts come off of, typically has baffles that need be set to balance the air throughout the house.
Not sure at this time if you call the contractor or an AC service.
Not sure at this time if you call the contractor or an AC service.
Posted on 7/3/15 at 5:13 pm to ItzMe1972
quote:
ItzMe1972
you need this guy's ac
Posted on 7/3/15 at 5:50 pm to GeauxTime9
why do you have 3 vents so close together?
Posted on 7/3/15 at 6:18 pm to GeauxTime9
There should be dampers at your unit plenum in the attic. You can balance the air flow to your grilles by manipulating these dampers.
Professionals use a hood that fits over a grille to to measure CFMs of air coming out of a grille, but I doubt you have access to one.
Instead take a ladder and try and ascertain just how hard the air is coming out of each grille on the system by feel. If you believe some grilled have low flow and they are in a large room then open them up. Pinch back on those that seem to be high. Do it by trial and error.
That or call the contractor and have his AC guy come out and make thd adjustments.
Good luck
Professionals use a hood that fits over a grille to to measure CFMs of air coming out of a grille, but I doubt you have access to one.
Instead take a ladder and try and ascertain just how hard the air is coming out of each grille on the system by feel. If you believe some grilled have low flow and they are in a large room then open them up. Pinch back on those that seem to be high. Do it by trial and error.
That or call the contractor and have his AC guy come out and make thd adjustments.
Good luck
Posted on 7/3/15 at 6:18 pm to GeauxTime9
Are there other vents that are barely blowing or is the whole house a wind tunnel?
I had some vents blowing very hard but others barely blowing at all and it turned out that some insulation inside the box the ducts come out of had fallen and was blocking half of the duct work. The unblocked ones were blowing like crazy.
I had some vents blowing very hard but others barely blowing at all and it turned out that some insulation inside the box the ducts come out of had fallen and was blocking half of the duct work. The unblocked ones were blowing like crazy.
Posted on 7/3/15 at 6:24 pm to GeauxTime9
quote:
I closed the middle vent thinking this would help
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