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-   -   mini split system 110 vs 220 volt (http://www.diychatroom.com/f17/mini-split-system-110-vs-220-volt-146377/)

jhcjr 06-07-2012 09:06 PM

mini split system 110 vs 220 volt
 
I have noticed that some one zone units (12000btu) will come in a 110volt or a 220volt . Which one will give the best performance?

Looking to buy one
Thanks

HVACDave 06-07-2012 09:16 PM

Not much difference in performance. Obviously less amperage draw on wire using 220, may be better with longer lengths of wiring from panel etc. Both should give rated cooling capacity.

If your panel has open spaces to use 220, that would be my choice, but others may have other opinions.

hvactech126 06-07-2012 09:20 PM

Get a 220V unit.

carmon 06-07-2012 10:33 PM

no difference..... wire size that's all... :no:

Missouri Bound 06-07-2012 10:41 PM

Quote:

Originally Posted by carmon (Post 938783)
no difference..... wire size that's all... :no:


Yep! That's it.:laughing:

hvac instructor 06-08-2012 12:48 PM

yep 220v. the electric co charges for usage. the amps will be less and if you have a Demand Meter the 110v will hurt you in the wallet

Yoyizit 06-08-2012 01:41 PM

Plus, with 220v you have half the amps in the wires so you have 1/4th the power dissipated and wasted in them.

12w or so? Whoopee.

jhcjr 06-08-2012 08:36 PM

Thanks for the info that helps alot....

Missouri Bound 06-08-2012 09:12 PM

Quote:

Originally Posted by Yoyizit (Post 939193)
dissipated and wasted


What???:eek:

wheelsup 06-09-2012 01:23 AM

Quote:

Originally Posted by hvac instructor (Post 939150)
yep 220v. the electric co charges for usage. the amps will be less and if you have a Demand Meter the 110v will hurt you in the wallet

You pay by the watt...a watt equals volts X amps

220v x 10 amps = 2200 watts (2.2 kw)
110v x 20 amps = 2200 watts (2.2 kw)

Same amount of wattage, same power consumption, same everything...

beenthere 06-09-2012 03:24 AM

Quote:

Originally Posted by wheelsup (Post 939512)
You pay by the watt...a watt equals volts X amps

220v x 10 amps = 2200 watts (2.2 kw)
110v x 20 amps = 2200 watts (2.2 kw)

Same amount of wattage, same power consumption, same everything...

Yep. Higher voltage simply allows a smaller wire size to be used for the same size load.

hvac instructor 06-09-2012 03:53 AM

true. like i said if you have a demand meter the electric company will charge you more if you go over the amp draw. they give you a lower rate, but if you go over a certain amp draw then they charge you a higher rate. it works pretty good if you dont turn on the a/c, dryer and stove at the same time.

beenthere 06-09-2012 03:57 AM

Around here. All demand meter rates are determined by KWH draw, not amps.

Yoyizit 06-09-2012 09:37 AM

Quote:

Originally Posted by Missouri Bound (Post 939430)
What???:eek:

Some power is lost in the wires. If you have 1/4 ohm of wire resistance you have 25W lost if 10A is flowing, P = (I^2) R.
With 20A you'd lose 100W.

ronn287 07-25-2014 11:02 PM

I've never seen 220 volts with a 10 amp breaker....?


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