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Air conditioner power consumption and temperature setting

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Pascal Damian

Jan 1, 1970
0
The sales rep that sold me AC told me that my AC unit will consume
about 1400W when starting up, then 700W *constantly* regardless of
temperature setting (e.g. 20C vs 25C). Is that true? I'm guessing not,
but I'm not sure.

Regards,
Pascal Damian
 
P

Peter Bennett

Jan 1, 1970
0
The sales rep that sold me AC told me that my AC unit will consume
about 1400W when starting up, then 700W *constantly* regardless of
temperature setting (e.g. 20C vs 25C). Is that true? I'm guessing not,
but I'm not sure.

I would expect it to consume 700W _while running_, regardless of the
thermostat setting. If it produces enough cooling to bring the room
temperature below the thermostat setting, then it will turn off, and
consume no power, until the temperature rises enough for it to
re-start.

The higher you set the thermostat, the less cooling it will have to
do, so it will run for a smaller percentage of the time, and so the
average power consumption will be lower.

--
Peter Bennett, VE7CEI
peterbb4 (at) interchange.ubc.ca
new newsgroup users info : http://vancouver-webpages.com/nnq
GPS and NMEA info: http://vancouver-webpages.com/peter
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G

Glenn Gundlach

Jan 1, 1970
0
Peter Bennett said:
I would expect it to consume 700W _while running_, regardless of the
thermostat setting. If it produces enough cooling to bring the room
temperature below the thermostat setting, then it will turn off, and
consume no power, until the temperature rises enough for it to
re-start.

The higher you set the thermostat, the less cooling it will have to
do, so it will run for a smaller percentage of the time, and so the
average power consumption will be lower.

I am not sure of this, but I would expect higher power consumption on
warmer days since more work has to be done on the gas. It will
certainly use more power on average because the machine will run more
hours to cool the house.

GG
 
P

Pascal Damian

Jan 1, 1970
0
Peter Bennett said:
I would expect it to consume 700W _while running_, regardless of the
thermostat setting. If it produces enough cooling to bring the room
temperature below the thermostat setting, then it will turn off, and
consume no power, until the temperature rises enough for it to
re-start.

The higher you set the thermostat, the less cooling it will have to
do, so it will run for a smaller percentage of the time, and so the
average power consumption will be lower.

But what is the definition of "running"? If I turn the unit on (press
ON on the remote control) and set it to Cooling mode, then a blue LED
will light all the time. However, from time to time another orange LED
will light for a while and during that time the outside fan runs, but
I guess this has to do with freshening the air inside the room by
bringing air from the outside, and doesn't have anything to do with
cooling. Am I right?

Regards,
Pascal Damian
 
P

Peter Bennett

Jan 1, 1970
0
But what is the definition of "running"? If I turn the unit on (press
ON on the remote control) and set it to Cooling mode, then a blue LED
will light all the time. However, from time to time another orange LED
will light for a while and during that time the outside fan runs, but
I guess this has to do with freshening the air inside the room by
bringing air from the outside, and doesn't have anything to do with
cooling. Am I right?

By "running", I mean actually cooling - the compressor and fans are
running.

I expect that the blue LED is just a "power on" indicator, and that
the air conditioner is only producing cool air when the orange LED is
on - that is, the orange LED indicates when the thing is actually
running, and doing useful work.
 
S

Spajky

Jan 1, 1970
0
The sales rep that sold me AC told me that my AC unit will consume
about 1400W when starting up, then 700W *constantly* regardless of
temperature setting (e.g. 20C vs 25C). Is that true? I'm guessing not,
but I'm not sure.

quite true for a an 2KW thermal power one ...
 
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