First, Im not very "technically" knowledgeable, so excuse my lack of correct terminology henceforth.
My issue is ONE noisy register..
We replaced both upstairs and downstairs units last year. I live in Texas, and one wall of our house is almost all windows, and heats up greatly. The old units never quite cooled our bedroom and master bath sufficiently, due to the huge windows. When they installed the new units, there persisted a problem with enough air flow (in just those two rooms), so, the contractor just bumped the blower up..and voila, every room is great. Problem is,...the register closest to the return air, and Im assuming right next to the blower in the attic blows like a tornado...with huge air volume.
Now, In Texas, you'd probably be put in jail, complaining about TOO MUCH air flow...in the summer...but that one register, clicking all the time is driving me crazy considering we spent like 15k.
I guess i could lower the blower speed....which I'll probably do in the winter, as we have a heat pump, and that volume of air kinda makes it feel cold as it blows across your skin. (Ive been thinking about replacing standard registers, with diffusers that blow across the ceiling because of this slight discomfort in the winter), but in the Summertime, this volume of air really helps, especially since that offending register is in a loft, directly over an open drop into the downstairs area, and also right in front of huge windows...
When i complained during a routine service call, the service guy said..oh...just tighten the register. Of course, this works, for all of about 5 minutes, and then the 'clicking' returns... I took the register completely off, and of course, all sound went away.
The Duct that supplies it is flex duct, that bends about a foot or so from the register, which I know may be adding to the problem.
I guess my question is...what is the quietest register I can find, as I really dont want to lower the blower in the summer, 2. would a diffuser that blows air out on all four sides, and Im assuming dont have moving slats be quieter, as thats whats causing the problem I think...the slats "jiggling" as the air passes by them. and 3. will using a diffuser that blows air out across the ceiling rather than directly down, negatively affect heating effectiveness with a heat pump during the winter, cuz Im assuming that theres better air mixing when the air blasts straight down into the room. Are there diffusers with a larger space between slats, or that are fixed in place, and dont jiggle...?
I really dont want to just leave the register off, and look all ghetto, but honestly, that tiny clicking noise is driving me nuts!
Thanks for any help, and I apologize for my lack of specificity about air handler type, blower type, etc etc etc..Im just a homeowner trying to save a lil money. And to be honest, the service guys I call dont think its an issue...theyre like.."what are you complaining about? Its working GREAT!!!"