They could not have been more helpful.  Our unit broke down and we needed a replacement.  Their extremely nice technician met me at the specified time Friday afternoon, and even called when he was fifteen minutes away.  He looked at the system and told me what two other people did, that I needed a new one.  We agreed on a price on Friday afternoon after 3pm and their crew showed up Monday morning to remove the old unit, the crane showed up to place the new unit on the roof and they had it in, installed the new thermostat and everything was working in no time.  They cleaned up after the mess the removal made (the old unit was not even installed properly)  and were friendly.  Dan sat down with me and explained what to do for the warrenty and told me to call if there were any problems.  Their price was lower than their competitors and they were just so very nice.  I could not be happier. Thanks to Or and Nahor for all their help.