Scheduled HelloTech to install Nest Hello video doorbell. The guy came out and tried to install but could not get it to work. It worked intermittently. He was at my house for 4 hours. He called HelloTech to get help on the issue was transferred four times and hung up on each time. They don't even support their techs in the field. He said he thought it was an electrical issue and suggested I get an electrician. I asked him to at least put my doorbell back together so I had a doorbell that worked. He tried and could not get it to work again. Said he would investigate issue and call me back with a solution. He never called me back. At least HelloTech reversed the charge for installation. Had an electrician out today who said the the wires in the doorbell where not connected correctly. Don't waste your time.