Description
The Bosch HMD8451UC is a 24 inch microwave drawer from Bosch’s 800 series. Instead of a door that swings out, the cavity pulls downward from under a counter or beneath a wall oven, opening and closing automatically at the push of a button. Bosch lists 950 cooking watts, ten power levels, automatic sensor programs, glass touch controls with an LCD white display and the option to install the unit flush to the surrounding cabinetry.
The drawer format solves problems that a conventional microwave does not. Loading from above is easier than reaching into a cavity at chest or head height, there is no hot door swinging into a walkway, and a drawer at counter height is reachable by someone seated in a way that an over the range unit never is. It also frees the wall above the cooktop entirely, which allows a proper range hood to be fitted instead of a microwave doing double duty.
A Note on the Listing and the Category
This product is listed on the site under over the range microwave ovens, and the source listing itself gives the “Installation Type” as “Over-the-Range”. Neither is correct. This is a built-in drawer that requires a cabinet cutout below a counter. It cannot be mounted above a cooktop and it cannot be used freestanding. That is a categorization and listing data issue rather than anything about the appliance, and it is flagged here so nobody orders it expecting an over the range unit.
The power figures also disagree. The feature bullets and the “Power Consumption” field both give 950 watts, and the “Energy Use” field agrees at 950 watts, while a separate “Wattage” field reads 1500 watts. The 950 figure is the cooking power. The 1500 figure, if it is anything, is a total electrical draw, and it should not be read as cooking output. The written description is also truncated mid sentence in the source data and contains a typographical error, so it should not be relied on as a complete feature list.
Sensor Programs, Controls and the Drawer Mechanism
Automatic sensor programs adjust cooking time by reading the food rather than running a fixed timer, which is the feature that most reduces second attempts on reheated leftovers. Ten power levels provide manual control below full power.
The glass touch control panel with an LCD white display is Bosch’s usual restrained styling, and on a drawer unit the controls sit on the front face where they are visible from standing height. Touch open and touch close means the drawer is motorized in both directions, so it can be opened with an elbow or a knuckle when hands are full. That convenience is also the mechanism most likely to need service over a long life, since it is a powered assembly rather than a hinge.
Installation and Electrical Requirements
This is the section that decides whether this appliance is even a candidate. Bosch lists the appliance as 23.87 inches wide, 23.37 inches deep and 16.31 inches high, weighing 81 pounds, which is the heaviest microwave in this catalog. A cabinet cutout is required and the flush installation option changes how the drawer front sits relative to the surrounding cabinetry.
The listing gives the voltage as “120.00” and the fuel type as electric, so it is a 120 volt appliance, but it does not publish an amperage requirement, a dedicated circuit requirement, cutout dimensions or ventilation clearances. Those are exactly the figures a cabinetmaker and an electrician need, and they must come from Bosch’s printed installation instructions. At 81 pounds, fitted into cabinetry at counter height, carrying a motorized drawer, this is an installation for a qualified installer rather than a self install project.
Highlights
- 24 inch built-in microwave drawer with a 1.2 cubic foot cavity.
- 950 cooking watts across ten power levels.
- Automatic sensor programs and auto defrost.
- Touch open and touch close motorized drawer.
- Glass touch controls with an LCD white display.
- Can be installed flush to the surrounding cabinetry.
- Stainless steel exterior and interior, 120 volt operation.
- Listed at 23.87 by 23.37 by 16.31 inches and 81 pounds.
Things To Consider
The listing is incomplete in the places that matter most for a built-in appliance. There are no cutout dimensions, no clearance figures, no amperage and no statement of whether a dedicated circuit is needed. For a product that has to be designed into cabinetry, that is the whole specification missing.
The wattage contradiction described above is unresolved in the source data, and the description text is truncated.
The rating average is 3.8 out of 5 from fewer than 60 ratings. That is the lowest average among the built-in and drawer units in this catalog, on a small evidence base. Anyone comparing drawer options should look at the Sharp SMD2470ASY, which publishes both its appliance and its cutout dimensions and carries a 4.4 average across nearly a thousand ratings.
At 81 pounds and with a motorized mechanism, service access matters. Once built into cabinetry, removing this appliance is a job in itself, so the cost of an eventual repair or replacement is higher than the appliance price alone suggests.
There is no convection and no air fry. Households wanting combination cooking should look at a countertop unit such as the Panasonic HomeChef, or a large conventional built-in such as the GE PEB7227ANDD.
Who It Suits and Who Should Look Elsewhere
This suits a kitchen being designed or renovated, particularly an island installation or an accessible kitchen where a drawer at counter height is far easier to use than a microwave mounted overhead, and where the Bosch aesthetic matches the rest of the appliances. Freeing the wall above the range for a real hood is a significant secondary benefit.
It is the wrong appliance for anyone who cannot commit to cabinetry work and a professional installation, and a difficult recommendation on published data alone given the missing cutout specification and the modest rating average. Renters and anyone wanting a plug in solution should look at the countertop microwave oven range instead.
