Salesman Mark L. was very professional, and worked very hard to ensure that we got exactly what we wanted at a great price.
The installers (Ernie, Phil, and Gary) were amazing! Polite and friendly, absolute perfectionists who take great pride in their work. They left the place spotless.
I would give Northern Comfort 5 stars just because of the installation, but the product is also top-notch. The only issue I had was getting information on the status of my order, (a couple of calls not returned, one person told me one thing, someone else told me something else) but it's quite likely that people were taking vacations during this time, so that is probably the reason.