I bought a Serta mattress from Shop NBC with what I thought had a 10 year warranty. The mattress is 7 years old and sags on both sides.
I had an inspector come to inspect the mattress and was told by the inspector that it sagged 1 l/2 inches on one side and one inch on the other side. Serta wrote me a letter saying it only sagged 1 inch and that they would not be honoring my warranty. I am going mattress shopping and will never buy another Serta mattress.
I will also lodge a complaint with Shop NBC. I would love to join a class action suit if it is advertised.
Review about: Serta Mattress.