Mini splits in general are small very slim condenser (outside unit) not many companys make them 24,000 btu made by mitsubishi size about 40 inches long 14 wide 30 inches hight this is give or take in size going by memory ...... weight 40 to 60 lbs ,can be mounted on roof if you have a flat area very quiet nice all around system easy to install , but there are municiple codes on placement of mechanical units A/c generators codes are mostly set backs (so many feet from your property line ) every town has certain requirments. Also you cant just bye one with out a Fed EPA lic. you need to be a qualified Hvac tech with the proper lic.