Double wall ovens have two separate ovens, allowing users to cook foods at two different temperatures. Single-double wall ovens have two separate compartments in the same overall space as a single oven, while a true double wall oven has at least one full-size oven. This gives users a ton of capacity, but you'll need to have a larger space in your kitchen to accommodate the bigger unit. Most double wall ovens still measure 30 inches wide, but they are around 50 inches tall (compared to about 30 inches for single wall ovens).
Among double ovens, we found the best feedback for the GE PT9550SFSS (Est. $3,350), a true double oven that provides 5 cubic feet of capacity in both the upper and lower cavities. It's a strong performer overall, and one that's feature packed -- including the ability to be controlled by a smartphone.
Reviews are generally excellent for the GE PT9550SFSS. It's one of three recommended double electric wall ovens as named by one independent reviewer. Cooking performance is judged to be Very Good across the board. Compatibility with GE's Brillion smart appliance app also draws the attention of technology reviewers like CNET, where the PT9550SFSS draws a 4 star rating, and DigitalTrends.com, where it is an Editors' Choice. These two reviewers spend lots of time looking at the advanced features that this double oven bring to the job of cooking your family's dinner, but they also pay attention to how well it handles the actual cooking. Though there are high point and low points in CNETs detailed and comparative baking, broiling and roasting trials, Megan Wollerton says that the PT9550SFSS "consistently performed well during our testing and produced very tasty results."
While there's sometimes some separation between how experts and users view any product, users are, if anything, even more impressed with the GE PT9550SFSS. While there aren't as many reviews as with some other wall ovens, we still found more than 120 of them (including some posted at GE's web site) at HomeDepot.com. The 4.7 star rating indicates the high level of satisfaction we spotted -- only one rating was below 3 stars, and there were only a handful (five) of those. Everyone else awards the oven either 4 stars or, mostly, 5 stars, with 96 percent offering it a recommendation.
The headline feature on the GE PT9550SFSS is the Brillion app. "The app allows you to preheat your oven, get alerts when your food is done, and change the oven temperature all from your Android or iOS device," Wollerton notes. Ian Tucker at DigitalTrends.com gripes about some quirks in getting the app to communicate with his test oven -- complicated by running it initially on an iPhone with a dated version of its iOS operating system (it's designed to use iOS 6 or later) -- but reviewers all report that the app is fairly simple to use. "Some users may find Brillion to be more trouble than it's worth, but once connected, the app's interface provided us with most of the options available on the oven's own interface," Tucker says.
But as brilliant as Brillion might be, it's everything else that's packed into this GE wall oven that might make you a cooking star. The upper and lower oven both have "true European convection," which directs heated air from around a single element evenly around food, as well as convection broiling, which employs two heating elements. The oven is self-cleaning, with both a 30 minute steam clean cycle for light soiling and a traditional cycle, which can handle tough build up, but can take up to five hours to finish. There are a decent amount of useful cooking modes, but unlike some ovens, such as the Electrolux EW30EW55PS (Est. $2,350)  profiled in our discussion of the best single wall ovens, you won't find features such as multi-stage cooking or programmable functions.
Though CNET complains a little about the layout of the control panel on the GE PT9550SFSS, usability is generally judged to be excellent by reviewers. One neat feature is a red LED status bar that tracks the progress of the upper oven. "It's a pleasant way to get essential information from across the kitchen, even if it does make the oven look suspiciously like a dreaded Cylon," Tucker says. Bright halogen interior lighting helps you watch your food through the oversized glass windows in both oven doors -- though we did see a just a couple of owner complaints that the light was actually too bright for their taste.
While the GE PT9550SFSS is a top performer with cutting edge features, it's not exactly a budget double wall oven. If your budget is tighter, the GE JT3500SFSS (Est. $1,900) is worth a look. It's been professionally tested and, while it finishes at the back of the pack among double ovens that reviewer reports on, it's also less expensive than most. The weak link is baking performance, but even that is rated as Good, "which reflects even browning of cakes and cookies baked on two oven racks." Users, on the other hand, have few qualms. It is one of the higher-rated ovens at HomeDepot.com and, while many of the 185 reviews were originally posted at the GE web site, the oven earns a score of 4.5-stars, along with recommendations from 93 percent of owners.
Where the PT9550SFSS is about as feature-rich a wall oven you are likely to find, the JT3500SFSS is relatively bare bones. There's no convection feature, for example. However, this is a double oven with two 5 cubic foot cavities to handle the needs of even large families. The self-cleaning options include a standard cycle as well as a steam cycle for light soiling. Color options include stainless steel, white, and black.
If convection is a must, the Frigidaire FGET3065PF (Est. $2,350) is also worth a look. Its user feedback is not quite as impressive as what the JT3500SFSS enjoys -- 3.9 stars based on just over 70 reviews at Lowes.com, for example. However, it enjoys a decent review at DigitalTrends.com, and a near glowing one at Reviewed.com, where it's named an Editors' Choice.
Experts note that while performance isn't bobble free, this Frigidaire double wall oven still holds its own against similar models. DigitalTrends.com, for example, notes that the ovens' built-in thermometers needed to be recalibrated (a relatively easy task, Jenny McGrath says) to bring them in line with readings on an analog thermometer used in the site's testing. "Once the thermometers synced up, both the convection and traditional settings worked well," McGrath adds.
As you might have surmised from the previous quote, this oven does have convection cooking capabilities, and that's available in both of the ovens. Other features include a quick preheat setting, delayed start, slow cooking, and a temperature probe (upper oven only). There are both steam and regular cleaning cycles. Capacity is a little lower than the two ovens above, but with dual 4.6 cubic foot cavities, it is still plenty ample, and some helpful touches -- such as a half-depth rack -- improve versatility. Color choices are black, white and stainless.