sammm
Well-known member
All things being equal, can someone explain the difference (pros/cons) in using a 12K BTU unit that runs on 110 volts vs. one that runs on 220 volts?
Thanks in advance.
Thanks in advance.
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Mini-split: 110v vs 220v
- Thread starter sammm
- Start date
doan
Well-known member
Assuming you're running a dedicated circuit for it, the 110 will cost more to install since you'll need to pull bigger wire. 110 will use twice the amps as 220.
JakeKohl
Well-known member
Assuming you're running a dedicated circuit for it, the 110 will cost more to install since you'll need to pull bigger wire. 110 will use twice the amps as 220.
This is probably the most direct reason. You can run most 18kbtu units at 220V with standard 12 gauge two conductor romex. Also note that wire sizing for a dedicated circuit to an HVAC can be sized to the peak amperage rating on the unit - not so much the breaker size. For instance, you can run 12 gauge on a 220V single phase circuit behind a 25 amp (possibly 30...not sure) breaker. My 18kbtu units have a peak rating of 19.2A.
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Tim The Tool Man
Well-known member
If you can run it at 220, the outdoor unit will run more efficiently by a small degree. Your indoor units will still pull just 120 from the outdoor unit...
Highbeam
Well-known member
Less amps is gooder. Use 220 whenever possible.
It hasn't happened yet but some jackass will give you a hard time about 110 and 220 vs. the actual 120 and 240 that you actually have. I speak from experience with that.
It hasn't happened yet but some jackass will give you a hard time about 110 and 220 vs. the actual 120 and 240 that you actually have. I speak from experience with that.
JakeKohl
Well-known member
Less amps is gooder. Use 220 whenever possible.
It hasn't happened yet but some jackass will give you a hard time about 110 and 220 vs. the actual 120 and 240 that you actually have. I speak from experience with that.
Old school and new school collide.
If you can run it at 220, the outdoor unit will run more efficiently by a small degree. Your indoor units will still pull just 120 from the outdoor unit...
Many manuf indoor units draw 220v. Mine do. 14-3
Tim The Tool Man
Well-known member
Many manuf indoor units draw 220v. Mine do. 14-3
I realize that but if his unit has the option of 110 or 220 ten I am assuming his indoor units only are going to be pulling 110...
I realize that but if his unit has the option of 110 or 220 ten I am assuming his indoor units only are going to be pulling 110...
Thanks for the replies guys, I appreciate the info!
Tim, I wasn't referring to a unit that can do either. Some of the 12K BTU AC/heat pumps run on a 110 circuit, and others require 220.