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Originally Posted by 2dabeach;642903My dealer recomended that I install new adjustable vents (instead of pie plates) in the main vents to allow us to cut down their flow and divert it to the bathroom. It helped a little but [not? the degree we were hoping. |
2da', where do you get adjustable registers? It may not have helped that much in the bathroom because you can only push so much air through that 2" duct—it has about 1/3 the volume of a 4" duct. We usually keep the bathroom door open so the coolness of the air there isn't a problem, but I'd like to cut down the air to the bedroom. I'm guessing at this, but I think it's easier to cut down the amount of air to a specific register than to increase it to another by closing down other registers. Air flows drops off quickly in relation to the distance from the fan and with the flexible, ribbed ducts, even more so. Thus, I expect if you closed every register but the last one in line, you wouldn't see as much increase in air volume as you might think. The best way to balance a system to your taste would be to have ways to direct air from one duct or another at any junctions, but I doubt this system has anything like that. The definitive answer has to come from an HVAC expert or someone with knowledge of fluid and gas dynamics.
Bob, the front beds have a very different layout. There are 4 registers: the first one is under the streetside seat at the dinette, at the rear of the trailer. it is right in front of the furnace and fan. My wife usually sits there, so she's happy as she likes it warmer than I do. The next one is under the wardrobe in the hallway. That's next to the shower and whenever I get out of the shower, it feels frigid, so it seems the airflow to that register is substantially less than the 1st one (it could have something to do with me being wet too). Across from there is the bathroom and the marginally effective register across from the toilet. The problem with this one is that when perched on the toilet with the furnace on, it blows cool air on my feet; I don't like that. The last register is in the bedroom on the streetside a little past the end of the bed. All the registers are a few inches off the floor and the covers can rotate, but not close.
Gene