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how to install new aircon in wall when hole too small??

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  1. #1
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    Default how to install new aircon in wall when hole too small??

    bought a new wall aircon today, supposed to be the same size as old one but it is about 4-5mm wider, maybe because of the air slots in the side, and it wont fit inside the hole in the block wall.
    its a gree 5.3kw cool only aircon.
    what do you do about this?? do i have to get my angle grinder with cup grinder attachment and grind the block wall down until it fits or what??

  2. #2
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    Quote Originally Posted by wozzzzza View Post
    bought a new wall aircon today, supposed to be the same size as old one but it is about 4-5mm wider, maybe because of the air slots in the side, and it wont fit inside the hole in the block wall.
    its a gree 5.3kw cool only aircon.
    what do you do about this?? do i have to get my angle grinder with cup grinder attachment and grind the block wall down until it fits or what??
    Bigger hole !
    I would probably use a diamond blade and cut it rather than just grind it down.

  3. #3
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    i was just thinking, if i put it in from the outside so the fins didn't have to go through the wall, would that work better??

  4. #4
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    If there is no flange or other parts stopping the unit from sliding into place from outside I doubt the unit will complain which way it ends up in place.
    The instructions only note the slope and support requirements.

    Go for it.

  5. #5
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    ok managed to do it, first one had to be hard didn't it. ended up grinding about 3mm from left and right hand side of the block wall to be able to fit it in.
    after that it fit perfectly. didn't have to go on the outside or anything. plumbed the drain in, working perfectly.

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    what do you do when the box aircon is on the top floor of a 3 story building and some dick has put a screw in the back of it stopping you from pulling it out??

  7. #7
    4K Club Member Marc's Avatar
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    Crow bar.
    Fear is the foundation of most government.
    John Adams

  8. #8
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    Quote Originally Posted by Marc View Post
    Crow bar.
    hmm, yes, really?? maybe an option.

  9. #9
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    Quote Originally Posted by wozzzzza View Post
    what do you do when the box aircon is on the top floor of a 3 story building and some dick has put a screw in the back of it stopping you from pulling it out??
    Angle grinder !

    Or gas axe !


    Seriously thought, get to the outside and remove the screws, yes I know easier said than done but that is the real solution. Might not be the answer you want but it is the answer.

  10. #10
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    so i have to go hire a cherry picker to get the job done?

  11. #11
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    Can you bang a long piece of flat bar along the side and break the fixing. Pics always help.

  12. #12
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    Quote Originally Posted by wozzzzza View Post
    hmm, yes, really?? maybe an option.
    The old unit is junk I assume, so a plank of wood on the wall to protect it and go for your life with the crowbar. Little by little the screw will give.
    Expect some damage, but everything can be fixed. Cheaper than a hoist.
    Fear is the foundation of most government.
    John Adams

  13. #13
    Community Moderator phild01's Avatar
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    I'd be wary about bashing into it with a crowbar and then any consequent release of gas.

  14. #14
    4K Club Member Marc's Avatar
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    Ha ha, that's probably right. I was thinking in prising the unit inward, out of the cavity,however ... bashing it out of the cavity and letting it drop 3 stories down has it's appeal

    Would you shout "Timmmber"?
    Fear is the foundation of most government.
    John Adams

  15. #15
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    i managed to get it out, it wasnt a screw in the back of it, it was just stuck, a couple of jemmy bars helped it get unstuck and it just slid out

  16. #16
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    Quote Originally Posted by wozzzzza View Post
    i managed to get it out, it wasnt a screw in the back of it, it was just stuck, a couple of jemmy bars helped it get unstuck and it just slid out
    Gas axe would have been more fun ;-)

  17. #17
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    Quote Originally Posted by droog View Post
    Gas axe would have been more fun ;-)
    yes agree but the mess and smell not so fun

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