My current AC company just told mne that they would not replace our roof top condo (4 stories) unit when the time came even though I have a service contract. Since it is 10 years old, we are likely near end of life. I am looking for another company that will be willing to install to take over my contract. There has to be a way, either crane or hoist through the access to get the unit up on top. I realize that is extra cost. Anyone know of a relaible company that will do this?