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fan vs. air conditioning, what's more energy efficient? Michael Rasmussen 09-08-2006
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Posted by Michael Rasmussen on September 8, 2006, 4:03 pm
I live in a small (600sq-ft) apartment in a building that's about two
years old. The air conditioner is a GE window-style unit that runs off
a 240-volt outlet. This time of year I can keep the apartment
comfortable if I open the windows and run the unit on fan only for
80%-90% of a day. When I do this, I also run a box fan at 2/3rds
speed in another window. The a/c unit has low and high fan speeds,
and I usually program it to turn off/on in 15-minute cycles, running at
its low speed.

I can also keep the apartment comfortable if I run the unit windows
closed with the a/c on. Then the unit runs maybe 30%-40% of the time.
When I use a/c I typically set it to 73 degrees Fahrenheit.

The average mean temp. where I live for the month of September is 70
degrees Fahrenheit if that matters.

Which of these methods would be more energy efficient?

Posted by =?UTF-8?B?UGFsaW5kcuKYu21l?= on September 8, 2006, 4:27 pm
Michael Rasmussen wrote:
> I live in a small (600sq-ft) apartment in a building that's about two
> years old. The air conditioner is a GE window-style unit that runs off
> a 240-volt outlet. This time of year I can keep the apartment
> comfortable if I open the windows and run the unit on fan only for
> 80%-90% of a day. When I do this, I also run a box fan at 2/3rds
> speed in another window. The a/c unit has low and high fan speeds,
> and I usually program it to turn off/on in 15-minute cycles, running at
> its low speed.
>
> I can also keep the apartment comfortable if I run the unit windows
> closed with the a/c on. Then the unit runs maybe 30%-40% of the time.
> When I use a/c I typically set it to 73 degrees Fahrenheit.
>
> The average mean temp. where I live for the month of September is 70
> degrees Fahrenheit if that matters.
>
> Which of these methods would be more energy efficient?


Why do you think a/c units have to be plugged into a 240-volt outlet?

--
Sue


Posted by Andrew Gabriel on September 9, 2006, 1:46 pm
> Michael Rasmussen wrote:
>> I live in a small (600sq-ft) apartment in a building that's about two
>> years old. The air conditioner is a GE window-style unit that runs off
>> a 240-volt outlet. This time of year I can keep the apartment
>> comfortable if I open the windows and run the unit on fan only for
>> 80%-90% of a day. When I do this, I also run a box fan at 2/3rds
>> speed in another window. The a/c unit has low and high fan speeds,
>> and I usually program it to turn off/on in 15-minute cycles, running at
>> its low speed.
>>
>> I can also keep the apartment comfortable if I run the unit windows
>> closed with the a/c on. Then the unit runs maybe 30%-40% of the time.
>> When I use a/c I typically set it to 73 degrees Fahrenheit.
>>
>> The average mean temp. where I live for the month of September is 70
>> degrees Fahrenheit if that matters.
>>
>> Which of these methods would be more energy efficient?
>
> Why do you think a/c units have to be plugged into a 240-volt outlet?

Eh? Probably because it says 240V on the rating plate.

--
Andrew Gabriel

Posted by =?UTF-8?B?UGFsaW5kcuKYu21l?= on September 9, 2006, 2:19 pm
Andrew Gabriel wrote:
>
>>Michael Rasmussen wrote:
>>
>>>I live in a small (600sq-ft) apartment in a building that's about two
>>>years old. The air conditioner is a GE window-style unit that runs off
>>>a 240-volt outlet. This time of year I can keep the apartment
>>>comfortable if I open the windows and run the unit on fan only for
>>>80%-90% of a day. When I do this, I also run a box fan at 2/3rds
>>>speed in another window. The a/c unit has low and high fan speeds,
>>>and I usually program it to turn off/on in 15-minute cycles, running at
>>>its low speed.
>>>
>>>I can also keep the apartment comfortable if I run the unit windows
>>>closed with the a/c on. Then the unit runs maybe 30%-40% of the time.
>>>When I use a/c I typically set it to 73 degrees Fahrenheit.
>>>
>>>The average mean temp. where I live for the month of September is 70
>>>degrees Fahrenheit if that matters.
>>>
>>>Which of these methods would be more energy efficient?
>>
>>Why do you think a/c units have to be plugged into a 240-volt outlet?
>
>
> Eh? Probably because it says 240V on the rating plate.
>

LOL, that reminds me of one of my little stints overseas, when we had a
bank of batteries and an invertor for running our house and office
during the hours other than the 2-4 hours a night when we /might/ get
mains power...

Now and again we used to shut the office down an hour or so early so we
could have a few minutes of air conditioning instead. Bliss.. only
broken by the all-too-soon "beep" of the invertor battery low warning.

--
Sue







Posted by Bubba on September 8, 2006, 5:01 pm
On Fri, 08 Sep 2006 20:03:45 GMT, Michael Rasmussen

>I live in a small (600sq-ft) apartment in a building that's about two
>years old. The air conditioner is a GE window-style unit that runs off
>a 240-volt outlet. This time of year I can keep the apartment
>comfortable if I open the windows and run the unit on fan only for
>80%-90% of a day. When I do this, I also run a box fan at 2/3rds
>speed in another window. The a/c unit has low and high fan speeds,
>and I usually program it to turn off/on in 15-minute cycles, running at
>its low speed.
>
>I can also keep the apartment comfortable if I run the unit windows
>closed with the a/c on. Then the unit runs maybe 30%-40% of the time.
>When I use a/c I typically set it to 73 degrees Fahrenheit.
>
>The average mean temp. where I live for the month of September is 70
>degrees Fahrenheit if that matters.
>
>Which of these methods would be more energy efficient?

Turn the fuquerer OFF and it will be most efficient you cheap bastard.
If you want A/C, turn it on and stop worrying about the cost. A/C is a
luxury. If you're that cheap then turn the damn thing off.
"Simple, yet efficient".
Bubba

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