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800 Series 30 in. Built-In Smart Combination Electric Convection Wall Oven and Speed Microwave in Black Stainless Steel
  • Bosch
  • Model HBL8743UC
  • Internet #310836929
  • Store SO SKU #1004669151
800 Series 30 in. Built-In Smart Combination Electric Convection Wall Oven and Speed Microwave in Black Stainless Steel
Discontinued Model:

800 Series 30 in. Combination Electric Wall Oven with European Convection and Speed Microwave in Black Stainless Steel

  • Dampened Hinges Softly and Quietly Guide the QuietClose Door
  • The Bosch Speed Oven Cooks Faster than a Traditional Oven
  • Meat Probe Takes Guesswork out of Cooking
  • View More Details

Product Details

A Bosch microwave oven combo offers versatile cooking in a convenient package. These large capacity built-in combination ovens offer convection cooking and fast pre-heating times. With speed, intuitive controls, large capacities and a clean aesthetic, Bosch microwaves and speed ovens lend a trusted hand in the kitchen when fitting cooking into your busy day.
  • The Bosch speed combination oven allows for faster cooking results and features a QuietClose door
  • Cooks Faster than a traditional oven and can be used as a microwave
  • Dampened hinges softly and quietly guide the QuietClose door shut
  • A full-extension telescopic rack offers safe access to the oven cavity
  • The wall oven is designed to be installed flush with cabinetry
  • Click here to shop for more Bosch Appliances
  • California residents

Additional Resources

From the Manufacturer



Dimensions: H 49, W 29.75, D 24.5



Capacity of Microwave (cu. ft.)
Cut-Out Front to Back Depth (in.)
Cut-Out Height (in.)
Cut-Out Left to Right Width (in.)
Depth With Door(s) Open 90 Degrees (in.)
Microwave Interior Depth (in)
Microwave Interior Height (in)
Microwave Interior Width (in)
Oven Interior Depth (in)
Oven Interior Height (in)
Oven Interior Width (in)
Product Depth (in.)
Product Height (in.)
Product Width (in.)
Wall Oven Size
30 in.


Amperage (A)
40 A
Appliance Type
Microwave & Electric Oven Combo
Capacity of Oven (cu. ft.)
4.6 cu ft
Cleaning Type
Self Cleaning
Black Stainless Steel
Color/Finish Family
Black Stainless Steel
Fuel Type
Light Source
Microwave Control Type
Microwave Door Release
Microwave Features
Convection Oven, Fingerprint Resistant, Microwave Rack, Safety Lock
Microwave Settings
Control Lock, Cook Power, Defrost, Keep Warm, Sensor Cook, Speed Cook
Microwave Size
Microwave Wattage (Watts)
Number of Oven Racks
Number of Power Levels
Oven Cleaning Options
Lower Self-Cleaning, Upper Manual Clean
Oven Control Type
Oven Cooking Process
Oven Features
Automatic Convection Conversion, Broiler in Oven, Gliding/Roll Out Racks, Hidden Bake Element, Oven Temperature Probe, Temperature Control
Oven Settings
Keep Warm, Proofing Mode, Sabbath Mode, Sensor Cook
Product Weight (lb.)
Rack Positions
Vent Location
Voltage (V)
Wattage (W)
120 W

Warranty / Certifications

Certifications and Listings
CSA Listed
Manufacturer Warranty
1 year limited

Questions & Answers

Q:Are you sure this is 110/120 volts? Bosch says it isn’t!
by|Aug 16, 2019
2 Answers
Answer This Question

A:  Yes, it is 120 Volts.

by|Aug 17, 2019

    A:  Hi AlexJ. Thank you for your question. Here are the technical specifications from Bosch for this model HBL8742UC. Technical Details: Watts (W) 9,600 W Circuit breaker (A) 40 A Volts (V); Frequency(Hz) 240 / 208 V; 60 Hz Power cord length (in) 50" Plug type Hardwired 240 V, Energy source Electric.

    by|Aug 16, 2019
      Q:Can this be mounted side by side, or one above counter and one below, or must they be installed a...
      by|Jun 25, 2019
      1 Answer
      Answer This Question

      A:  Hi Mathlady. Thank you for your question. These are designed to be installed as shown. Per the Installation Guide for this model: The HBL8752UC Bosch combination oven is sold as a set, which includes two built-in oven components: a traditional wall oven (lower oven) and an upper oven that is a built-in speed oven.▯ For ease of installation and improved alignment, the oven components are assembled together in the customer’s home rather than at the factory.▯ Each of the components are packed in separate boxes, which are strapped together prior to shipping.▯ The combination oven listed here is approved for use in a single cutout, using single power connection. Each traditional oven component is designed with an oven-mounted junction box on top, which is used for connecting the upper oven power cable.▯ The hardware required for mounting the speed oven on top of the traditional oven will be found inside the traditional oven box.▯ Each of the oven components has its own rating label, the component model number, FD number, etc.

      by|Jun 27, 2019
        Q:Is the oven self cleaning
        by|Feb 4, 2019
        2 Answers
        Answer This Question

        A:  Hi Ruby. Thank you for your question. The lower cavity of this 800 Series Combination Oven is self cleaning.

        by|Feb 6, 2019

          A:  Yes, this item has a self-cleaning oven.

          by|Feb 17, 2019
            Q:How long does it take the oven to heat to 350 degrees?
            by|Nov 6, 2018
            1 Answer
            Answer This Question

            A:  Hi JW. Thank you for your question. The 800 Series 30" Wall Oven in Stainless Steel does feature Fast Preheat which will bring the oven to 350 degrees in 6 to 8 minutes.

            by|Feb 18, 2019
              1 found this answer helpful
              Showing 1-4 of 5

              Customer Reviews

              4.2 out of 5
              • 4.2
                out of 10 reviews
              • 67% recommend this product
              Filter by:
              Showing 1-10 of 10 reviews
              Love it!!
              [This review was collected as part of a promotion.] Got this oven to replace an existing oven and microwave in Ohio. I liked it so much that I replaced a double oven in our Florida home. The oven and convection microwave do the same work as the larger double oven and much more. It's so easy and intuitive to use.
              Response from CSDec 6, 2022
              Hi Judy, thanks for taking the time to share your positive experience with model HBL8742UC. We're so happy to hear this appliance has met your expectations. Again, thank you for the kind review and for being a valued member of the Bosch family.
                • Recommended
                i bought a money pit
                moved into my new built house in march, microwave broke first of april took tell may to fix and now microwave is broken again. stupid me bought a combo so even my cabinets i would have to change to go back to my trusty wal mart microwave. never would i ever by this again
                Response from CSFeb 12, 2021
                Hi deb:(, thanks for bringing this to our attention and we’re sorry to hear you’ve been experiencing issues with your double oven. We have added a link to our service locater if it's needed: https://www.bosch-home.com/us/owner-support/repair-service. If you have service questions, please feel free to call our 24/7 customer service team at 800-944-2904 or email us at BoschCare@bshg.com with your contact information. We’d be happy to help.
                  Wall oven microwave combo
                  Love the oven and everything about the microwave except wish the door was swinging side to side and not a drop down. It is nearly impossible to get into the back to clean. Love the black stainless steel finish.
                    Good product
                    [This review was collected as part of a promotion.] Bought for kitchen remodel. So far, so good.
                      Only had this appliance for a couple of weeks and so far my wife and I love it! I was easy to in...
                      Only had this appliance for a couple of weeks and so far my wife and I love it! I was easy to install and is very simple to use. We also love the convection feature!
                      • Verified Purchase
                      • Recommended
                      5 Star Review
                      Rating provided by a verified purchaser
                      • Verified Purchase
                      MICRO/OVEN COMBO
                      [This review was collected as part of a promotion.] SUPER EASY TO USE, COOKS GREAT.
                        We purchased this set for our new home. The microwave oven broke as soon as warranty went out. Bo...
                        We purchased this set for our new home. The microwave oven broke as soon as warranty went out. Bosch told us that we would have to pay 500 to have it fixed. Horrible customer service. If you pay so much money you would think that you are getting a quality product. Bosch can learn a thing or two about quality from the 50$ microwaves that served me for 5 years and was gifted to someone in full working condition looking new. Ignore the reviews that are “part of a promotion” and run the other way. Anything else is better. Don’t waste your money.
                          1 found this review helpful
                          Best oven ever
                          [This review was collected as part of a promotion.] Have had it for over a month love it cooks 3 different dishes at once. Cooks evenly An preheats so fast use it all the time.
                            • Recommended
                            Perfect combination over
                            [This review was collected as part of a promotion.] I bought this oven for it's versatility and features. I love that the top oven is convection, microwave, speed cook or broil. All the features and convenience of double ovens but fits in a small kitchen. All my Bosch appliances were purchased for reliability and reputation and they are the best!
                              • Recommended
                              Showing 1-10 of 10 reviews

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