How do I cool and heat this space effectively?

[chumpy36]

New garage apartment. While they were building above the garage I had them insulate the ceiling etc. It's insulated on the back wall by dirt and about half of the side are also covered with dirt. But the structure is brick. I don't fancy cutting a hole for the exhaust of a AC unit or for a mini split. I was thinking a small portable ac unit with a hose exhaust. Could I just pipe it into the interstitial space between ceiling and floor above or is that a bad idea? If I need to go through the wal, I could go through the band they put there but A sizeable hole will likely compromise it. I could go through the brick but that seems sketchy too. Any thoughts?

 

[chinboys]

Are you trolling use here?
The last pic shows an outdoor condensor of either heat pump or mini-split.
There is nothing to exhaust but the condensate to the outside or drain pipe with a 3 inch hole through your rim joist.
The power and control lines, condensate line and line set get routed and seal off in this hole.
You will also need a 220-240 V AC power line to drive the condenser unit.

 

[chumpy36]

Are you trolling use here?
The last pic shows an outdoor condensor of either heat pump or mini-split.
There is nothing to exhaust but the condensate to the outside or drain pipe with a 3 inch hole through your rim joist.
The power and control lines, condensate line and line set get routed and seal off in this hole.
You will also need a 220-240 V AC power line to drive the condenser unit.

that's for the apartment upstairs. I'm trying to condition the garage space.

 

[fitter30]

120vac 9k mini split. They will throttled down to 2-3k btu's.

 

[chumpy36]

120vac 9k mini split. They will throttled down to 2-3k btu's.

Thx. Take the lines through the wooden band or the brick or does it matter?

 

[fitter30]

Thx. Take the lines through the wooden band or the brick or does it matter?

Doesn't matter.

 

[pcmeiners]

Knocking holes through the brick would require a hammer drill capable of 2" carbide bit.
Not a big deal with a rented unit from say Home Depot, multiple holes can be done in a couple hours. 3 holes, 2 for the insulated gas lines, one for the combined electric, control line, condensation line. For wood again rent a heavy duty right angle drill from Home Depot and get a 2" Foster bit, a couple if you might hit a nail. Agree with Fitter30, you only need a small mini-split. You might think about painting the floor to cut down on moisture coming through the slab.

 

[dscheidt]

Knocking holes through the brick would require a hammer drill capable of 2" carbide bit.
Not a big deal with a rented unit from say Home Depot, multiple holes can be done in a couple hours. 3 holes, 2 for the insulated gas lines, one for the combined electric, control line, condensation line. For wood again rent a heavy duty right angle drill from Home Depot and get a 2" Foster bit, a couple if you might hit a nail. Agree with Fitter30, you only need a small mini-split. You might think about painting the floor to cut down on moisture coming through the slab.

When I put a mini split in my basement, I rented a core drill and bit. Drilled a 3" hole in 16" thick brick wall in a jiffy. Took longer to clean the brick dust up than to drill the hole. Everything -- lineset, condensate, and electrical -- can fit through that hole (the size required depends on the unit you're installed.), but we ran the electrical through a different hole with conduit to comply with local code.