I was watching a DIY-type show on TV the other day and they were describing the HVAC system (or its vents, I guess) as “high-velocity”. It was a forced air heat / AC in summer kind of system. Instead of registers in the floor, there were small vents high up on the wall, round, and about 2″-3″ across.
Has anyone worked with this before?
I’m wondering because i have a small upstairs room in my house that has no direct heat, but gets adequate (sort of) warmth from the downstairs wafting up. If the ducting for this system was of a small diameter, i could run some into the room rather than relying on heat from other parts of the house finding its way in.Thanks
,earl
“He who xxxxs nuns will later join the church.” –The Clash
Replies
I suspect there are much more cost efficient ways of getting heat there. You not only need the HV ductwork, but need special air handlers (and heat source. probably) to generate the high velocity air.
This is just an informed guess though.
_______________________
"I may have said the same thing before... But my explanation, I am sure, will always be different." Oscar Wilde
Edited 12/28/2002 11:00:10 AM ET by Bob Walker
Yeah, I also wonder if the "high-velocity" is generated at the furnace or at the register. Good and bad points for both.
,earl
"He who xxxxs nuns will later join the church." -The Clash
Unico, SpacePak, and Hi-V are three manufacturers of hiigh-velocity ac equipment.
The High velocity is generated at the air handler.
Doesn't high velocity also automatically mean high noise?
Doesn't high velocity also automatically mean high noise?
My in-laws added HV C/A a few years ago and it isn't noisy._______________________
"I may have said the same thing before... But my explanation, I am sure, will always be different." Oscar Wilde
Not if the system is properly designed and installed. Using the proper lengths of 2" duct, proper use of sound attenuation tubing, adherence to minimum radius bends for ducting...it can be noisy but it doesn't have too be.
We had a great thread a while ago regarding design and noise, but I couldn't fiind it in a search. These were the only two threads that popped up:
http://forums.taunton.com/tp-breaktime/messages?msg=22343.1
http://forums.taunton.com/tp-breaktime/messages?msg=19806.1
Hi-velocity systems operate separate from any other HVAC units and are disigned as independent from any other system. It is an expensive consideration.
If your only concern is for heat............then investigate liquid filled radiant electric baseboard....usually 220v on a wall or base thermostat.
If you wish both heat and air then this is a good option, BUT most applications are centered in the attic air handler and ductwork system, usually large enough to handle a moderately sized house.
Your total area and physical layout are critical in this decision....and that we have not discussed.....so it is still open for lots more discussion!!!
........................Iron Helix