No idea if the other does not turn on. I just know I hear a blower.
I didn't get irritated at all with the tech and won't with the new one. I will let him know the problems I am having and inform him that I will be asking a lot of questions and watching. Not that I don't trust him, I don't know him. I am just covering myself in my fight against the builder. I have used this tactic in the past when dealing with a 3rd party who is sent to resolve a problem and what has happened every time is that tech/whatever is more than helpful in talking about what they are doing and answering my questions. I have done this in apts with maintenance and service techs as well as in my daily operations at work. I picked it up when someone said the same to me. It lets the guy know from the get go where the questions are coming from and they know you are not questioning their ability, but genuinely want to know for your fight and for future reference. So far everyone has been completely helpful when I use this approach.