A:AnswerI'm not sure about the venting part for a gas cooktop, but I did have to have a plumber out to install a new gas feed line and they did cut a small hole in the interior wall to install the gas feed line. I had to have this done by a third party not by the installers. Hope that helps.
A:AnswerI would say yes unless you don’t have 240 V power supply available for the electric stove to be plugged in to. If 240 V is available, then yes, they can switch them easily.
A:AnswerWhen I purchased the install , it stated they are licensed professionals installing the unit. They had all the right tools , and check for leaks after the install .
A:AnswerThere will need to be a shut off valve behind your stove. Second you should have the gas turned on and inspected before install. Safety is important!