I just bought a washer and dryer, supposedly to be installed at the time of delivery. But when the appliances came, I was told I needed a plumber and the deliverer would be able to do it. A similar thing happened with a new dishwasher last year: you need an electrician and another piece of hardware.
The cost of installation is included in the appliance and if I need to call either a plumber or electrician, then they should pay for it, or inspect the current installation to decide what needs to be done.
The sales personnel is very friendly but I am very unhappy with the delivery of the goods!