Wow, thank you for that insight! That does help me. I'm suppose to go test drive the Civic EXL tomorrow. I already owned a 2014 Civic EXL and loved it! I really wanted the upgrade to the Accord and then bummed with this noise. I only actually made 1 car payment. I'm hoping to relay the message about the heater box and see if they get it this time.LizF227, they fixed my heater box 3 weeks ago and I haven’t heard the rattle since then. So I’m not sure if it’s a temporary fix or not. I don’t blame you for being spooked now with your new Accord. But have you seen all the recalls and problems with the Civics? If not, research it online and you’ll quickly see the Civics and CR-Vs are having even more issues (and serious and dangerous issues too) than the Accords. Basically any new Honda model vehicle that you get now is going to have a lot of issues and concerns because the real problem is with Honda the company. Honda is making all of its vehicles very cheaply and poorly over the last few years and it seems to be getting worse. I live 15 miles away from the Honda Marysville plant in Ohio and I’ve talked to a friend who works there and let’s just say he has seen some changes going on there over the last few years and he no longer will drive a new Honda vehicle.