The vast majority of wall ovens sold today are single electric ovens. Experts say that electric ovens generally heat faster and more evenly than gas models. However, they may dry food out more if they do not include a convection feature, which uses high-speed fans to circulate warm, moist air throughout the oven space. Convection also shortens cooking time and improves surface browning.
The Whirlpool WOS92EC0A (Est. $1,500) is a full-size oven with an impressive five-cubic-foot capacity and 30-inch width. It comes equipped with standard convenience features such as convection heating; a hidden bake element for easy cleanup; and a steam-clean option as well as rapid preheat, keep-warm, delayed-cooking and Sabbath-mode settings. The KitchenAid KEBS109B (Est. $1,900) , a runner up in this category, is the same size and has similar conveniences. It has a convection and self-clean mode (though not steam clean) and a hidden bake element, but it lacks a keep-warm option. The KitchenAid wall oven also has roll-out extension racks and a proofing option. Both ovens come equipped with a large viewing window and the FIT System, which allows the oven to fit into an existing cutout with ease.
The WOS92EC0A aces at baking and broiling jobs, according to testers in one professional review. Testers at Reviewed.com likewise found it to be a "competent" performer. Editors praise the keep-warm setting and say it provides the "best balance between accuracy and precision." The setting maintained an average temperature of 185 degrees Fahrenheit. The only downside, according to Reviewed.com, is the wall oven took a long time to preheat -- 17 minutes.
The KEBS109B also performed well at baking and broiling jobs in a professional test of 54 wall ovens. It came in third place, just a hair behind the Whirlpool -- which took first place -- in its overall rating. Testers at Reviewed.com, however, are less than impressed. While the oven performed excellently at broiling jobs, it failed to reach target temperatures in the baking and convection modes. When set to 350 degrees, the oven only reached 326 degrees. Furthermore, it took an "abysmal" 15 minutes to preheat, and the convection mode only shaved off a minute. Editors praise the broiling function, however, saying that it performed better than other models tested and reached its target temperature in four minutes.
We didn't find enough user reviews of the KitchenAid KEBS109B to be of much use, but nearly two dozen reviewers at Sears.com and HomeDepot.com review the Whirlpool WOS92EC0A, giving it a high overall rating. Most say that it cooks evenly and makes excellent use of its interior space, which is pleasantly large. Several say that it's fairly loud, but this is a common complaint about the latest generation of wall ovens. A few point out that the cooling fan runs from the moment the oven turns on until about 30 minutes after it's turned off. While this is a nuisance to some, others say it doesn't bother them. One user at Sears.com says, "It is a bit louder than my previous Whirlpool oven, but tolerable. It would not stop me from purchasing again."
The Bosch HBL5450UC (Est. $2,000) -- a former Best Reviewed in this category -- and Wolf SO30FS (Est. $4,860) are also options, if price is not an issue. The Bosch is a 30-inch wall oven with an internal capacity of 4.7 cubic feet. It includes convection and self-cleaning settings, 14 cooking modes, a temperature probe for meats and a warming setting that keeps food hot until serving time. The Wolf, on the other hand, is a stylish, high-end model with loads of features. It's a 30-inch wall oven with a 4.5-cubic-foot capacity and a triple-paned viewing window. It has a dual convection system that uses four heating elements and two fans to circulate hot air within the oven. It also offers 10 cooking modes, a hydraulic door (which lowers slowly on its own), halogen interior lights, a self-cleaning function, a rotating glass touch-control panel (which can tuck away for a sleeker look), a temperature probe and three adjustable racks.
While the Bosch wall oven scores highly in an expert test, user reviews are less consistent. The oven gets 4 stars overall from 10 users at Buzzillions.com, most of whom say it is well made, easy to use and easy to clean. Users praise the fast heating time and convection-roast setting, which they report produces juicy meats with beautifully crisped skin. On the other hand, a couple users complain about the reliability of this Bosch wall oven. One says, "From the day I installed two of these ovens, I have had many repairs: broken convection fan, fire in the convection fan, doors do not seal closed, ovens never reach correct cooking temperature." Another owner complains of "lots of expensive computer board repairs." The Bosch HBL5450UC is backed by a one-year warranty. The Wolf SO30FS has a two-year warranty (five years on the heating element and electronic control board).
All four ovens are similar in capacity and function, but we ultimately chose to list the Whirlpool WOS92EC0A as a best-reviewed product because it performs better in professional tests and is reviewed more often by users.