Installing an over-the-range microwave yourself is one of those weekend projects that can save you anywhere from $150 to $300 in professional installation fees. With the right preparation and a helper, most homeowners can tackle this job in about two to three hours. Here's what you need to know before you start.
Tools and Materials You'll Need
Before you begin, gather these essentials: a drill with bits, a stud finder, a level, a measuring tape, a screwdriver set, and a socket wrench. You'll also need the mounting bracket that comes with your microwave, along with screws (usually included). Having a second person is absolutely critical—these units typically weigh between 50 and 70 pounds, and you'll need four hands during the mounting process.
Check your existing electrical setup. Most over-the-range microwaves require a dedicated 120-volt outlet inside the cabinet above. If you don't have one, you'll need an electrician to install it, which adds $100-$200 to your project cost.
Remove Your Old Microwave or Range Hood
Start by unplugging the existing unit and removing the filters and any screws holding it in place. Most over-the-range microwaves are secured by two upper mounting screws that go through the cabinet above and sometimes a lower support bracket. Have your helper support the weight while you remove the final screws. For range hoods, you'll also need to disconnect the ductwork—just be prepared for some dust.
Once removed, check the wall and cabinet for any damage. This is your chance to patch holes or reinforce mounting areas if needed.
Install the Mounting Bracket and Secure the Microwave
Every microwave comes with a specific mounting template—tape it to the wall exactly where the instructions indicate. Use your stud finder to locate wall studs, as you'll want at least one screw anchored into solid wood. Mark your drill points carefully and use the level to ensure everything is straight.
Drill pilot holes and attach the mounting bracket securely. Then lift the microwave onto the bracket—this is where your helper earns their lunch. While they support the weight, you'll reach up through the bottom and drive screws through the top cabinet into the microwave housing. Most models need three to four screws through the top.
Connect Power and Ductwork
With the microwave hanging securely, plug it into the outlet inside the upper cabinet. If your unit vents outside, connect the ductwork now using foil tape or duct clamps. If it recirculates, install the charcoal filters according to the manufacturer's directions.
Test the microwave and the fan to make sure everything works properly. Check that the door opens and closes without hitting cabinets or the range below—you should have at least 30 inches of clearance from the cooktop to the bottom of the microwave per most building codes.
While a DIY microwave installation can save money, some appliance projects are best left to professionals. When you're ready to upgrade your major appliances, we stock our $899 in-stock washer and refrigerator models that come with expert delivery and installation included—no guesswork required.