Floors only where there is a working lift
FedEx Freight, R+L and Estes all limit the service to floors above or below the level the vehicle reaches, and only when a lift or escalator is available and any labour needed to operate it is provided at no cost to the carrier. No lift means the freight stops at ground level, whatever you have paid.
Stairs are a different conversation
Estes prices each further floor above or below street level separately, at $1.20 per cwt with a $14.00 minimum on top of the street level charge. Where no carrier will do it, the answer is a local mover or a delivery to a business address, not an argument at the door.
The carrier disclaims damage caused inside
R+L states in item 566 that it has no liability or responsibility for damage or injury resulting from inside delivery services it performs, and that the party requesting the service indemnifies the carrier for claims arising from it. Read that before asking a driver to bring a machine through a shop.
It stacks with the address charge
FedEx Freight says in item 750-2 that the residential charge, published at $243.00 per shipment, applies in addition to inside pickup or delivery and all other lawful charges. A pallet taken into a home office can therefore carry a residential line, an inside line and a liftgate line on the same invoice.