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#1
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A/C--Is It Really Cooling?
I have a Whirlpool A/C that I bought two years ago that fits in a window.
Consumer Reports gave it a terrific rating. I started using it this summer in a 10 by 10' room and it seems like it's cooling me pretty well while I'm at a desk. I have a thermometer in the room that doesn't seem to move from 84 degrees after 30-40 minutes of cooling. What's up? -- Wayne T. Watson (Watson Adventures, Prop., Nevada City, CA) (121.015 Deg. W, 39.262 Deg. N) GMT-8 hr std. time) Obz Site: 39° 15' 7" N, 121° 2' 32" W, 2700 feet "Maybe this world is another planet's Hell." - Aldous Huxley (1894-1963) Web Page: home.earthlink.net/~mtnviews |
#2
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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1 On Thu, 28 Jul 2005 01:45:24 -0400, "Carolina Breeze HVAC" wrote: but in a nutshell, window units suck Care to elaborate? In a nutshell, I think SUV's suck, but many soccer moms will beg to differ. -----BEGIN PGP SIGNATURE----- Version: PGP 7.1 iQA/AwUBQucjBQIk7T39FC4ZEQLrRwCfWppEYRYW0Yao7/c1RO3mFzuw/RIAnijr KNavXorY6udU1OsQ6Q+Fc6dW =k5/M -----END PGP SIGNATURE----- -- -john wide-open at throttle dot info |
#3
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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1 On Wed, 27 Jul 2005 05:34:44 GMT, "W. Watson" wrote: I have a Whirlpool A/C that I bought two years ago that fits in a window. Consumer Reports gave it a terrific rating. I started using it this summer in a 10 by 10' room and it seems like it's cooling me pretty well while I'm at a desk. I have a thermometer in the room that doesn't seem to move from 84 degrees after 30-40 minutes of cooling. What's up? Three things, at least: You've probably got cool air blowing on you, it takes a couple of hours for a room to stabilize, and at least you are dehumidifying the air, so it feels cooler even without dropping the temp. -----BEGIN PGP SIGNATURE----- Version: PGP 7.1 iQA/AwUBQuckHQIk7T39FC4ZEQLLFACeLpxF7D038G72V1dMCtt6/fSp2gMAn1z2 DiySlB97N9Q28JNit0kHDNXX =Vkou -----END PGP SIGNATURE----- -- -john wide-open at throttle dot info |
#4
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"~^Johnny^~" wrote in message ... -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Thu, 28 Jul 2005 01:45:24 -0400, "Carolina Breeze HVAC" wrote: but in a nutshell, window units suck Care to elaborate? In a nutshell, I think SUV's suck, but many soccer moms will beg to differ. Nope...... Soccer moms blow.....and it's them mini-vans that suck !!! -- SVL |
#5
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Carolina Breeze HVAC wrote:
"W. Watson" wrote: I have a Whirlpool A/C that I bought two years ago that fits in a window. Consumer Reports gave it a terrific rating. I started using it this summer in a 10 by 10' room and it seems like it's cooling me pretty well while I'm at a desk. I have a thermometer in the room that doesn't seem to move from 84 degrees after 30-40 minutes of cooling. What's up? Litttle thing called thermal dynamics.... Maybe you mean the room has significant thermal mass... 35 minutes at 5000 Btu/h is 2917 Btu, enough to cool 3 55 gallon water drums or 2917 ft^2 of 1/2" drywall 2 F. And of course, lack of information from you... Perhaps W. Watson has 2 dozen water drums in the room :-) Nick |
#6
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Nick,
He may have a defective thermometer :-) Watson did not say what size window unit he had, what size & how many windows were there, if the room was insulated or how well, or how hot it was outside (or how many drums of water or other stuff was in the room. We need more information. Stretch |
#7
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"W. Watson" wrote in message ink.net... I have a Whirlpool A/C that I bought two years ago that fits in a window. Consumer Reports gave it a terrific rating. I started using it this summer in a 10 by 10' room and it seems like it's cooling me pretty well while I'm at a desk. I have a thermometer in the room that doesn't seem to move from 84 degrees after 30-40 minutes of cooling. What's up? How large a room? How large an AC? Temperature outside and sun load? To see if it is cooling put a thermometer on the intake and another on the outlet and see what the differential is. |
#8
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Stretch wrote:
He may have a defective thermometer :-) True. Does it always read 84 F? Watson did not say what size window unit he had, what size & how many windows were there, if the room was insulated or how well... I'm thinking most window units are at least 5K Btu/h, and windows and insulation aren't a big factor 30-40 mins after the AC is initially turned on, starting with indoor and outdoor temps in equilibrium. ...or how many drums of water or other stuff was in the room. Lots of mass with a small time constant (eg lots of drywall) could initially keep room air warmer, but a 55 gallon drum with a 12 hour time constant wouldn't do that. We need more information. Agreed. Maybe W. Watson has a huge unshaded west window and only turns on the AC when sun begins to shine in. Nick |
#9
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Yet another factor- location in house. If you're cooling a room that
has easy airflow access to solar-heated areas below, guess what? Location, location, location. To include latitude & longitude. HTH, J |
#10
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on a side note... can some one really quick give me some figures..
my house has 2 AC units a 4 ton and a 2 Ton... How much power do they draw. when they run? the 4 ton is for the 1 st floor 2/3 of the house, and the 2 ton is for the second floor 1/3rd of the house.. The reason I am asking is that, I found a photograph of the previous owners. who had put a window A/c in the master bedroom.. So that got me thinking.. is it economical to put it in the master bedroom and run it all night, while the 4 TON A/C is off, as it is unecessarily cooling the entire 1st floor ( ie, kitchen.. , dining,,.etc) I do have a 5000 btu window , ac., which , if I am not mistaken, consumes. 550W. assuming it runs for full 8 hours.. that is 4.4 kwh units.. Now my 4 TON runs atleast 4 hours. each night.. how much does that translate into. ? But it does keep the kitchen.. living.. dining.. all cool. . when I wake up in the morning |
#11
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wrote in message ups.com... on a side note... can some one really quick give me some figures.. my house has 2 AC units a 4 ton and a 2 Ton... How much power do they draw. when they run? the 4 ton is for the 1 st floor 2/3 of the house, and the 2 ton is for the second floor 1/3rd of the house.. The reason I am asking is that, I found a photograph of the previous owners. who had put a window A/c in the master bedroom.. So that got me thinking.. is it economical to put it in the master bedroom and run it all night, while the 4 TON A/C is off, as it is unecessarily cooling the entire 1st floor ( ie, kitchen.. , dining,,.etc) I do have a 5000 btu window , ac., which , if I am not mistaken, consumes. 550W. assuming it runs for full 8 hours.. that is 4.4 kwh units.. Now my 4 TON runs atleast 4 hours. each night.. how much does that translate into. ? But it does keep the kitchen.. living.. dining.. all cool. . when I wake up in the morning Well, I guess you could look at your service entrance meter and figure it out... |
#13
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"Carolina Breeze HVAC" wrote in message Su No one knows how to size em right, they think that if they get that little 99$ one at Lowes, its gonna work forever, none of the sizing charts, if you want to call them that state anything much more than room size..no insulation values, nothing.. They are noisy, vibrate too much and are heavy..lol... I always regarded you as a knowledgeable person, but is itseems you are also an elitist. In many climates it is plain silly to spend $10,000 for central AC when a window shaker works for the 10 or 20 days a year it is really hot. |
#14
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#15
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"W. Watson" wrote in message ink.net... I have a Whirlpool A/C that I bought two years ago that fits in a window. Consumer Reports gave it a terrific rating. I started using it this summer in a 10 by 10' room and it seems like it's cooling me pretty well while I'm at a desk. I have a thermometer in the room that doesn't seem to move from 84 degrees after 30-40 minutes of cooling. What's up? Litttle thing called thermal dynamics.... And of course, lack of information from you to be able to tell you, but in a nutshell, window units suck and people seem to think that if consumer reports said they are good, any size one will work. -- Wayne T. Watson (Watson Adventures, Prop., Nevada City, CA) (121.015 Deg. W, 39.262 Deg. N) GMT-8 hr std. time) Obz Site: 39° 15' 7" N, 121° 2' 32" W, 2700 feet "Maybe this world is another planet's Hell." - Aldous Huxley (1894-1963) Web Page: home.earthlink.net/~mtnviews |
#16
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"~^Johnny^~" wrote in message ... -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Thu, 28 Jul 2005 01:45:24 -0400, "Carolina Breeze HVAC" wrote: but in a nutshell, window units suck Su No one knows how to size em right, they think that if they get that little 99$ one at Lowes, its gonna work forever, none of the sizing charts, if you want to call them that state anything much more than room size..no insulation values, nothing.. They are noisy, vibrate too much and are heavy..lol... Care to elaborate? In a nutshell, I think SUV's suck, but many soccer moms will beg to differ. -----BEGIN PGP SIGNATURE----- Version: PGP 7.1 iQA/AwUBQucjBQIk7T39FC4ZEQLrRwCfWppEYRYW0Yao7/c1RO3mFzuw/RIAnijr KNavXorY6udU1OsQ6Q+Fc6dW =k5/M -----END PGP SIGNATURE----- -- -john wide-open at throttle dot info |
#17
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its takes time to cool things down... Also depends on the size of the
unit. If its undersized it can take an eternity to cool things down. Make sure to keep that door shut too! |
#18
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"Edwin Pawlowski" wrote in message news:ksQFe.2737$_u5.2491@trndny03... "Carolina Breeze HVAC" wrote in message Su No one knows how to size em right, they think that if they get that little 99$ one at Lowes, its gonna work forever, none of the sizing charts, if you want to call them that state anything much more than room size..no insulation values, nothing.. They are noisy, vibrate too much and are heavy..lol... I always regarded you as a knowledgeable person, but is itseems you are also an elitist. In many climates it is plain silly to spend $10,000 for central AC when a window shaker works for the 10 or 20 days a year it is really hot. Cripes man... 10 grand for a central air units really pushing the envelope right now....well, maybe not, but still, when you can get a package unit, with duct installed in the 12SEER 3 ton range for under $3000 in some places, well, it just makes sense to get one. Window shakers have their place. And ironicaly enough, I just had to pull one and reinstall a new one for a resturant that is in a building that central AC is all but impossible due to the landlord. The landlord lives above the cafe, and the clothing store and THEY have central air, but will not allow them below to have it. The problem I have and I think you missed it, and if you did, its partially my fault..something about loosing a sense of humor when its 113F out and everyone thinks you are superman for 48 hours, is that when you, the average person, goes to Lowes, Home Depot, or gasp..Wally World, you have no idea what you are looking at NORMALLY, in the sense of what will this do REALLY? You can take two 21,000BTU units, different makes and different air flow designs, and while both should remove 21K one might have better airflow than the other, makig it seem that its cooling faster, altho, both are indeed removing the same amount of heat. Then, you have the sizing issue...some places only need a few thousand BTUs while others will need much more. Many people just look at the price, and maybe, thats maybe the little sizing chart that they might, or might not have at the store. Granted, not many people can or will take the time to get a load calc done for a window unit, but sometimes, it can be the difference of it working, and not working to your satisfaction. Point being, IF you didnt size it right, and IF its worked fine till the temps hit 90+F, then if it seems not to be cooling right, its not the units fault. They still suck tho..lol..after lifting that 2.5ton heat pump unit into that window myself, I would have rather moved a 5 ton heat pump package unit solo.....and yes..I did on Sat..LOL... |
#19
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uDarrell,
thanks a lot for your links.. They are informative. I will see if I can get a Manual J done on my house. But for now. putting the Window Jammer will definitely save me $$..just for the peak summer months in TX.. |
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