Great installation service: on time, very careful and thorough and pleasant (despite it being very hot weather and not fun to be up on the roof!) The sales staff are knowledgeable and don’t pressure the potential customer. One less star because they were not knowledgable about proximity of vent to a fire sprinkler head (although in fairness neither was the fire dept nor the appliance manufacturer!!) (FYI: 5′, measured by plumb bob on floor, dropped from sprinkler head to where the fireplace will stand and also on ceiling from sprinkler head to vent pipe.) Thanks to Theresa, Steve, Kevin and Matt! – Cecily D.