How To Vent A Microwave On An Interior Wall: Expert Tips and Tricks

Oleh Hope Koelpin May 25, 2023 Post a Comment

As modern kitchens evolve, so do the appliances we use in them. One appliance that has become increasingly popular is the over-the-range microwave. This appliance is not only convenient but also saves counter space. However, when installing an over-the-range microwave on an interior wall, it's essential to know how to vent the microwave properly.

In this blog post, we will guide you through all the necessary steps to vent a microwave on an interior wall. We'll cover everything from basic installation to more advanced techniques. By following these tips and tricks, you can ensure your microwave is correctly installed and vented.

Understanding The Basics Of Microwave Vents

Before we dive into the specifics of venting a microwave on an interior wall, let's first discuss the different types of vents available. There are two main types of vents: exterior and recirculating.

Exterior Vents: These vents connect the microwave to an exterior duct. When using an exterior vent, the air is exhausted outside the home.
Recirculating Vents: Recirculating vents pull the air through a filter and then push it back into the kitchen. This type of vent doesn't require any ductwork, making it easier to install.

Required Tools For Venting A Microwave On An Interior Wall

Before beginning the installation process, make sure you have all the required tools. Here's a list of items you'll need:

Power drill
Stud finder
Measuring tape
Pencil
Reciprocating saw
Ducting material
Screwdriver
Roof flashing or wall cap
Caulk gun

Step-by-Step Guide for Venting a Microwave on an Interior Wall

Follow these step-by-step instructions to ensure proper installation and venting:

1. Choose the Perfect Spot

Before installing the microwave, choose the perfect spot. The ideal location for an over-the-range microwave is between 13 and 16 inches above the cooking surface. Keep in mind that you'll need to install ductwork on the wall behind the microwave.

2. Locate the Wall Studs

Locate the wall studs using a stud finder. Mark the studs' position with a pencil to ensure the mounting bracket is anchored securely.

3. Install The Mounting Bracket

Install the mounting bracket according to the manufacturer's instructions. It should be attached to the wall studs using screws.

4. Determine the Vent Route

Determine the vent route by choosing between an exterior or recirculating vent. Exterior vents require ductwork to be installed through an exterior wall or roof. Recirculating vents require a charcoal filter to be installed inside the microwave.

5. Cut A Hole In The Wall For The Ductwork

If you are using an exterior vent, cut a hole in the wall for the ductwork using the reciprocating saw. Make sure to cut the hole slightly larger than the duct size to allow for easy installation.

6. Install The Ductwork

Install the ductwork from the back of the microwave to the exterior vent. Attach it to the wall cap or roof flashing.

7. Attach The Charcoal Filter

Attach the charcoal filter to the front of the microwave if you are using a recirculating vent.

8. Connect The Ductwork To The Microwave

Connect the ductwork to the back of the microwave. Use metal duct tape to secure the connection.

9. Secure The Microwave To The Mounting Bracket

Secure the microwave to the mounting bracket using the manufacturer's instructions.

10. Apply Caulk Around The Edges

Apply caulk around the edges of the microwave to prevent air leaks.

Advanced Tips and Tricks for Venting a Microwave on an Interior Wall

Here are some advanced tips and tricks that can help you vent your microwave on an interior wall:

1. Use A Duct Booster Fan

If your ductwork is too long or has too many bends, it can reduce the vent's efficiency. In such cases, use a duct booster fan to increase airflow.

2. Use A Roof Cap For Exterior Vents

Use a roof cap instead of a wall cap when installing exterior vents through the roof. Roof caps are more efficient in preventing rainwater from entering the duct.

3. Use A Metal Duct

Always use a metal duct instead of a flexible one. Metal ducts are more durable and efficient in carrying exhaust air outside.

4. Use A Chimney Extension

Use a chimney extension if your ceiling is higher than eight feet. The extension helps to cover the gap between the microwave and the ceiling and also makes the vent more efficient.

Venting a microwave on an interior wall might seem like a daunting task, but it's relatively easy with the right tools and techniques. By following the steps outlined in this blog post, you can ensure that your microwave is correctly installed and vented. Remember to choose the perfect spot, use the right vent type, and install the ductwork correctly.

Frequently Asked Questions

Q1. Can I install a vented microwave in a non-vented space?

No, you cannot install a vented microwave in a non-vented space. A vented microwave requires an exterior vent or a recirculating vent to function correctly.

Q2. How much does it cost to vent a microwave on an interior wall?

The cost of venting a microwave on an interior wall varies depending on various factors such as the type of vent, length of ductwork, and installation charges. On average, it can cost anywhere between $150 to $500.

Q3. Can I install a microwave on an interior wall without ductwork?

Yes, you can install a microwave on an interior wall without ductwork by using a recirculating vent. However, it is less efficient than an exterior vent and requires regular filter replacement.

Q4. How often should I replace the charcoal filter in my recirculating vent?

Charcoal filters should be replaced every six months or whenever they become clogged.

Q5. Can I use a flexible duct for my exterior vent?

No, you cannot use a flexible duct for your exterior vent. Flexible ducts are not recommended as they can trap grease and cause blockages.

Q6. What is the ideal height for an over-the-range microwave?

The ideal height for an over-the-range microwave is between 13 and 16 inches above the cooking surface.

Q7. Can I vent my microwave through the attic?

No, you cannot vent your microwave through the attic. It is against most building codes as it can cause moisture buildup, leading to mold growth.

Q8. Do I need a permit to vent my microwave on an interior wall?

It depends on where you live and the local building codes. In most cases, you don't need a permit to install a microwave on an interior wall.

Q9. Can I use a wall cap for my exterior vent?

Yes, you can use a wall cap for your exterior vent. However, roof caps are more efficient in preventing rainwater from entering the duct.

Q10. How long does it take to vent a microwave on an interior wall?

The time it takes to vent a microwave on an interior wall varies depending on the installation complexity. On average, it can take anywhere between 2 to 4 hours.