Hi all...today's the day my new Lopi Revere is being installed. It's about 30 degrees here in Upstate NY and since our boiler just kicked the bucket a few weeks ago, it couldn't have come at a better time. I will post a before and after link later... One question I have now though... Are you supposed to tip the installation guys? After paying $400 or so for the install, should I assume it's not expected? Or do these install guys look forward to that. If it's a normal thing to tip these guys, I don't have a problem doing it, just don't want to if it's not normal.