What every best has:
The only non-user review we found was from a Washington affiliate station, KEPR, as part of their "Will It Work?" series. In the video, staffers bring out a sagging sofa for the experiment, only to read in the Furniture Fix instructions that at least three sets are required for a sofa. Fortunately, they find a matching sagging loveseat, and after sliding several Furniture Fix panels underneath the cushions they find that the cushion has actually been lifted by two inches. While the results are successful, they conclude that the Furniture Fix doesn't make the loveseat any more comfortable -- and add that you can probably get the same results by sliding a TV tray under the cushions.
Another hiccup is the product's website; customers report overcharging, order doubling, aggressive telemarketing and the impossibility of getting a refund. According to customers, not only is there no order confirmation page on the Furniture Fix website, but the navigation is extremely (some say deliberately) confusing; they say that clicking the button for a free set will actually double or triple a paid order, adding additional shipping and handling charges. Calling customer service to cancel the order does no good; callers are told to call back in a few hours and, when they do, are told that it's too late to cancel because the order has already been shipped.
In the end, Furniture Fix might help bolster sagging cushions in smaller items, but you can probably make your own solution with a piece of plastic or light plywood.
KEPR staffers bring out a sagging sofa to test the Furniture Fix, but find that the instructions say that you need at least three sets for a sofa. They're limited to testing it on a sagging chair instead, with successful results: the chair cushions are lifted by two inches. However, they conclude that, while the Furniture Fix panels do the job, they don't actually make the chair any more comfortable -- and shoving a TV tray under the cushions, they add, would probably have the same results.
Furniture Fix gets only 2 out of 5 stars from about two dozen user reviewers on Amazon.com. The negative posts say that Furniture Fix doesn't hold up and cracks, and that you need to order several sets in order to have enough panels for a sofa. One positive poster says that it does add support to a daybed, although the daybed is not used often and that the plastic wouldn't be sturdy enough for an item that is used frequently.
User reviews skew to the negative on Walmart.com. The only 5-star review states that while the product does fix sagging furniture, it only works well on pieces that are "gently used." Another major complaint is that one set is very small and multiple boxes are needed to line a large couch.
The majority of user reviews on QVC.com swing in Furniture Fix's favor; many of the 30 owners are pleased with the improvement in their furniture and say the difference is noticeable. However, middle-of-the-road reviews state that while the product works initially, the slats slide and don't stay in place. Also, since the plastic is sharp, there are a few cases where users report damage to their couch's upholstery.
There are a number of complaints here about the Furniture Fix website; customers complain of overcharging and order doubling, of poor customer service and of aggressive telemarketers who won't take no for an answer.