Minisplit Heating & Cooling for House and Garage

[jserr68594]

I am planning on heating and cooling my brick ranch with minisplits. I am in NW Ohio. The house is very well insulated and has new windows. I am think I will want a 9K-12K BTU head unit for each bedroom, a 24K BTU head unit for the living and kitchen area, an 18K for the garage and a 24K for the 1000 Sq Ft. basement.

I was thinking two 36K-48K three to four zone systems may work well. What do you guys think?

 

[toyotadriver]

Sounds excessive. 6-8 tons of cooling capacity for just under 2000 sq ft?

Mini splits are great for open areas. Not as good for a house like yours. I'd be looking for a conventional system. Plus, OH gets cold in the winter. The new hyper heat mini splits are nice but I'd want some gas/propane for the times the outside temps hit frigid.

 

[jjrbus]

Surprised no one has raised a fuss yet. The correct way to determin btu's is a manual J, no btu per sq ft or I been doing this for 40 years, trust me I know. This can be DIY or pay to have one done. Mini's are deceptive, my 9K Daikin puts out from 4k to 11k btu, varies by manfuacturer! https://www.loadcalc.net/

 

[toyotadriver]

In the past I paid a company to do a manual J calc for me. I can’t recall the company off the top of my head but they had it to me in a couple days. The results were the same as the various calculators out there I also used. Draw your own conclusions.

I’d SWAG a guess that the OP needs 3 tons or 36k BTU for the entire house.