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A neighbor of mine that moved overseas gave me her air-conditioner a few years ago. I don't use it regularly as I prefer to use a fan most of the time.
We pay by the unit $15 per month/unit, so $180/year/unit to defray the co-ops cost of electricity. So I reckoned considerable cost savings would be had with just ONE unit to handle LR and BR.
Since it must fit a through the wall sleeve my choices were limited by size. Since there is a 220V outlet next to the sleeve, that was what I needed to buy. (Bedroom sleeve,s ame size as LR) has a 115V outlet, but it's unused.)
Since I am a super-shopper (nobody on planet Earth gets a better price than I do) I shopped everything available online. I settled on a FEDDER'S (they went belly up a few years before I bought in 2011) and the name was aquired by AIRTEMP.
Anyhoo, best deal was to buy in April (before cooling season) from a company called VENTING DIRECT.com. For $399 + no tax + free shipping I got a 12,000 BTU unit sent to my lobby. (Best deal in town for a thru-the-wall, why the huge premium for TTW, a mysery.)
What I do is to use two fans, one blowing across the LR floor towards the hallway and another in the doorway of the BR routing the cool air in (and warm air out at the top.)
I made one mistake in underestimating the effect of the morning Sun into my ESE facing apartment. Indoor temps can soar 15 degrees in two hours from 10 AM to Noon.
But if I run the AC 24/7 both rooms stay comfortable on the hottest days with the bedroom perhaps 3 degrees warmer than the Living room.
If I could do it over again, I would have chosen exactly the same physical sized model in a 14,000 BTU unit (for a lousy $50 more, dammit.) so I could cool down faster.
Advice: Do not get a unit too big, because if it turns off too often, it raises the humidity in the house to a cool damp level. Ideally you want a unit sized so that it runs nearly continuously at your desired temperature. It's like Goldilocks' porridge: you want it "just right."
Be careful of sizing: there are two basic sizes of sleeve and they are NOT interchangeable. Measure sleeve and unit 4 times before you buy.
Sorry for gassing on so long.
Last edited by Kefir King; 05-04-2018 at 07:23 AM..
Just got a 8000 BTU GE from PC Richards. The motor is distracting and interferes with sleep. So now I have to buy ear plugs and toggle the speed setting so that it drowns out the motor rotation. I wish they could just improve the technology we are still using tech from over 50 years ago.
My Fedder's is not quiet but since it is not in the room that I sleep in, I cannot hear it from bed. When I am watching TV in the LR, I keep it on the slowest fan speed (whixh is coincidentally the "dehumidification" setting.)
maybe you need a refresher course . variable speed motors on fans and pumps that regulate by demand are much more efficient . i have been designing variable speed control panels for them for decades as well as running efficiency calculations on them .
i suggest you google using variable speed fans and efficiency . we are not talking two speed motors that are wound high and low but actual speed control . that is not the same thing . the bulk of my sales were replacing old 2 speed 1 winding or 2 speed 2 winding motors on facility air conditioners with vfd's and single speed off the shelf ac motors ..
as a ball bark , when dealing with variable torque applications reducing the speed of a motor on a fan by half cuts power usage by far more than 1/2 . a 10hp motor at 1/2 speed can be more like a 2-1/2hp motor in efficiency
Last edited by mathjak107; 05-04-2018 at 08:54 AM..
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