Mini Split Sizing
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Looking For help sizing my Mini split
I did a manual J I don’t know if I did it right please see attachment.
Total Heat load 27000 BTU Cooling load 14000BTU
I wasn’t able to add all the details of my house in the manual J
Zone 6 Iowa
We have R12 Zip Panel R21 open cell in walls R33 total
r60 cathedral Celling
and R12 under slab
No blower door test but I have done my best and am well aware of the benefits of a tight house.
This is a 2 level home
level one: 2 stall garage and utility room 900Sf TOTAL HEAT BTU 11900
Garage load Heat 10,100BTU 264 CFM
Utility heat 1800Btu 19CFM
Level 2: Living area TOTAL HEAT BTU 15000
Main / kitchen 7800Btu 194 CFM
Bedroom 2400Btu 61 CFM
Bath 1600Btu 33CFM
Stairwell open to the main living area 3200BTU68CFM
was Quoted a Daikin 36k Btu mini split with one 18k head for the garage and one 18k Duct unit upstairs
I feel like I could get away with there 24k Btu unit and have a 15k unit upstairs and a 12k Down
Right now I am using a 17k bth electric heater for both the down and upstairs and it keeps it very warm “although outdoor temps right now are 20f” this I feel is giving me skepticism of the manual J report.
Any help very welcome
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Replies
CS,
I will give your post a bump.