Hello all. Quick question that perhaps someone can help me with. Im looking to put 3 indoor units on one side of my house. 15k btu downstairs, 7k and 9k btu units in two bedrooms upstairs. I understand that mini splits modulate. The thing I dont understand is minimum output of the condenser. The condenser I was looking at is rated 24k btu. I know that if all these units are on full blast it wont be the best performance. I see a minimum btu output of the condenser is 10k as per manufacturer specs. What happens if I turn off the 15k and 9k unit? Will the 7k run by itself off that large condenser or will it cause an issue?

 

With a minimum of 10K, anything less than that could cause a problem. Is the condenser you are considering made to have multiple zones?

 

Thanks for the reply Grady. Yes, I was looking into the LG multi flex units. I guess putting a big evaporator mixed with small ones on two separate floors of the house is a no go. It never dawned on me to look into the minimum output of the condenser until today.

 

You may want to consider two condensers. One for the first floor and one for the second floor.

 

I just don’t know why they would sell the 7k and 15k indoor units as a package with one condenser if it cant run properly with only the 7k unit running by itself. I planned on putting a condenser on each side of the house and running multiple splits off each but I guess its back to the drawing board.