Make sure they tell you what condition the water heater is in (bypassed or not). And where all the valves are. If the water heater is bypassed and you turn it on (electric) the heating element will burn out in seconds!!!
Make them turn everything on (fridge, lights, furnace, TV's etc), run the water. Take notes, video and ask plenty of questions
__________________
"PT Crew Members Since 9/2010"
2011 RAM 2500 HD 6.7L CTD Crew
2014 Prime Time Sanibel 3250