I got an estimate for A/C and furnace replacement from a HVAC contractor today. I found that on his business card, he put only home improvement contractor license and I couldn't find plumbing or electrical license number. Does contract need to have plumbing license in order to do this work?
Most of other HVAC companies that I got quotes from last week have plumbing license. Some even have both electrical and plumbing licenses.
Should I be concerned with the guy who has only home improvement contractor license?