The Complete Guide to Replacing an Over the Range Microwave

Upgrading your kitchen with a new over the range microwave can provide more interior space and better performance, but installing a replacement unit comes with its own set of considerations. This comprehensive guide will walk you through everything you need to know to successfully replace your existing over the range microwave.

We'll cover choosing the right microwave, prepping for installation, step-by-step replacement instructions, ventilation requirements, safety tips, and testing and maintenance recommendations. With the right information and preparations, you can install your new over the range microwave and enjoy an upgraded cooking experience.

Reasons to Replace Your Over the Range Microwave

An over the range (OTR) microwave is a major kitchen appliance located above the cooking surface that serves for reheating, defrosting, and cooking. As they age, OTR microwaves can suffer decreasing performance and issues like:

• Dimming or flickering interior lights
• Failing to heat food properly
• Noisy operation
• Rusting or peeling interior
• Grease buildup leading to odors
• Exhaust fans not ventilating properly

Newer OTR microwave models also come with improved features that may be worth upgrading, like:

• Higher wattage for faster reheating and cooking
• Quieter fans and operation
• Sensor cooking for automated cooking times
• Smudge-proof stainless steel interior
• Higher capacity interiors
• Built-in ventilation systems

For optimal microwave performance and access to the latest features, replacing an older over the range microwave every 8-10 years is recommended. The project takes planning and care, but can refresh the look of your kitchen and improve daily convection.

Choosing the Right Microwave Replacement

Selecting the right over the range microwave model for your kitchen is key to a smooth installation and getting the most out of your appliance. Consider the following factors:

Size and Dimensions

Measure the height, width, and depth of your current microwave location. Standard OTR microwaves are 16-18 inches deep and 30 inches wide. Choose a similar size or evaluate if you have room for a larger capacity model. Also measure the gap between your cabinets to ensure proper fit.

Ventilation Needs

Determine if you need an integrated exhaust venting system or if your existing external ventilation is adequate. Some microwaves recirculate air through filters, while others must vent to the outside through ductwork.

Cooking Requirements

Higher wattages (1000W+) provide faster reheating and cooking. Choose a lower wattage model (500-800W) for limited cooking. Also ensure the microwave is rated for use above your type of range (gas or electric).

Special Features

Modern options like sensor cooking, multi-stage programming, steam cooking functions, and convection and grilling modes expand your cooking versatility. Prioritize features that suit your cooking needs.

Budget

OTR microwaves range from $150 on the low end to $1000+ for pro-style models. Determine how much you can invest for the performance and features you want.

Preparing for Installation

Proper planning and preparation will make replacing your over the range microwave safer and easier. Have these materials ready before installation day:

• Tools: drill, screwdrivers, wrench, pliers, measuring tape
• Hardware: mounting bracket kit, screws, toggle bolts
• Safety gear: work gloves, safety goggles, step stool
• Ventilation: ductwork, vent hood, clamps, screws

Ensure you have adequate electrical capacity in your kitchen walls or sockets to power a microwave. OTR units usually require a dedicated 120V, 60Hz, 15- or 20-amp grounded electrical outlet. Microwaves with ventilation may also need access to your home's ductwork.

Step-by-Step Microwave Replacement

Follow these key steps to safely remove your old microwave and install the new OTR unit:

1. Disconnect and remove old microwave

• Unplug microwave and turn off electrical circuit
• Remove any venting ductwork or filters
• Take out screws securing the unit to upper cabinet
• Carefully lift microwave off mounting bracket
• Remove old bracket unless replacing with identical model

2. Prep the installation area

• Place protective covering over cooktop below
• Attach new mounting bracket per manufacturer instructions
• Drill holes for ventilation ductwork (if needed)

3. Mount and install new OTR microwave

• Lift microwave into place and attach to mounting bracket
• Secure firmly with manufacturer's recommended hardware
• Connect ductwork to ventilation exhaust port
• Plug in microwave and reconnect electrical power

Refer to the manufacturer's instructions for model-specific mounting and ventilation requirements. Have an assistant help lift and hold the microwave during installation.

Ventilation System Integration

Proper ventilation is crucial for over the range microwave performance and safety. Here are some key considerations:

• Recirculating microwaves use charcoal filters to trap odors and grease.
• Vented models require outside exhausting through ductwork.
• Match ductwork size to microwave exhaust port diameter.
• Use metal ductwork to withstand heat and moisture.
• Vent outside through roof or exterior wall.
• Ensure ductwork has smooth paths without tight bends.

Consult local building codes for approved ventilation methods based on your kitchen setup. Proper ducting will enhance airflow.

Safety Tips

Follow these precautions for a safe over the range microwave installation:

• Consult appliance manuals and local building codes.
• Disconnect electrical power at circuit breaker.
• Work with a partner to lift and install microwave.
• Use proper equipment like a step stool vs. climbing on counter.
• Wear safety goggles and gloves when drilling or handling venting.
• Keep children and pets away from installation area.
• Be careful when working around an active cooktop or range.

Rushing the job or taking shortcuts can lead to electric shock, appliance damage, or serious injuries. Focus on doing it right, not fast.

Testing and Troubleshooting Your Replacement

Run through these checks after installing your new over the range microwave:

• Test all cooking modes and power levels.
• Verify interior lighting works properly.
• Ensure venting system exhausts air adequately.
• Check for levelness and stability when opening the door.
• Make sure any integrated rangehood functions properly.

If you experience issues like uneven cooking, noise, or a wobbling unit, refer to the manufacturer's troubleshooting tips. Small adjustments can remedy most problems.