While a recirculating filter isn't as effective as other types of microwave venting, it still clears your kitchen of the most pungent cooking odors. In addition, countertop models usually have a recirculating vent, but some built-in microwaves share the same filtration.
KEY TAKEAWAYS: Convertible vents offer improved air quality by venting air outside of the kitchen. They can also convert into a ductless system that uses air filters. Recirculating microwave vents send your kitchen air through a series of aluminum, carbon, or charcoal filter vents.
Other kitchens go about venting by being near an outdoor exit—just open a door to vent the heat out. A recirculating microwave is a microwave that vents internally or back to your kitchen. In the case of a built-in microwave, it vents from within the cabinet it's installed into.
The vent is on the top rear as with most over the range microwaves. You can vent it traditionally (ie to an outside vent) or recirculate it, which means just that--the air recirculates as opposed to being vented outside. There is an air filter used for this that comes with the unit.
A ductless recirculating vent pulls air through a filter and exhausts the air back into the kitchen. Some units are equipped with a charcoal filter that traps some particulate matter and odors, but most of the heat and moisture, along with some types of particles, stay in the house.
Most microwave vent hoods are recirculating, which does not entirely remove the unwanted contaminants from your kitchen air. Instead, the air moves through charcoal filters and is recirculated back into the kitchen. So, it is important to duct to the outside when possible to keep your indoor air clean and fresh.
The most obvious way to determine if your range hood is ductless is whether or not you have ductwork. If you have no ductwork, your hood recirculates kitchen air. Also, if your vent hood comes with carbon filters or a recirculating kit, it is ductless.
A ducted range hood must be connected to a duct with pipes that carry the airborne particles away from the kitchen to the outdoors. This is what differentiates it from a ductless range hood, which instead just recirculates through a filter and then back into the kitchen.
Convertible means it can vent through the wall or ceiling using a duct, or can be converted to non-venting (filters the air and blows it back into the kitchen) with Recirculation Kit Part Number W10294733 which is available from your dealer or an authorized parts distributor.
Unlike countertop models, OTR microwaves are not portable, and they boast a higher price tag: However, they also have built in exhaust fans, which serve as a stove-top ventilation system to eliminate smoke, steam, and cooking odors.
A convertible range hood is an appliance designed to remove smoke, steam, grease, cooking fumes, and odors from the air in your kitchen, with or without ductwork for ventilation.
Unvented range hoods do filter some grease and cooking odors from the air, but the general consensus is that they're nowhere near as effective. Nor do they remove heat and humidity, so they won't help keep your kitchen cool while you cook. Above: An industrial-style vent (made of ducting) draws air up and out.
"Only microwaves with a fan that recirculates air back to your kitchen have filters." Over-the-range microwaves typically have both a grease filter and a charcoal filter and they should each be handled differently when it comes time to replace or clean them.
A ductless (or ventless) range hood does not vent out of the home, instead, it carries the debris and smoke form the air and filters it through a charcoal or carbon filter before releasing it back into the room. While many times this method is not as functional as a vented hood, it does work.
If you can't find a duct anywhere, and you feel strong air flow from the front of the range hood when you turn it on, it's probably a recirculating model.
A recirculating kit is an accessory for converting ducted range hoods to ductless or recirculating. It consists of a stainless steel vent and charcoal filters. Install the kit on top of your range hood to vent or recirculate air back into your kitchen.
While over-the-range microwaves have been stylish for years, the trend is on the way out in 2018.
1" clearance in the rear. The front edge of the microwave (measured at door) should sit at least 3" or more back on the counter or shelf to avoid accidental tipping. If located on the counter near a range, we recommend locating it at least 2 ft away.
Adequate ventilation, especially if the microwave is built into a wall of cabinetry, is a must.
Home Depot microwave installation cost
Over-the-range microwave installation from Home Depot costs $100 for replacements. Replacing an old range hood with an over-the-range microwave costs $400. Hauling away and disposing of the old microwave costs $25. Delivery costs $60* or is free with purchases over $400.
From countertop to built-in
You can install the microwave into your cabinetry alone, or above a wall oven. Built-in installation with a trim kit maximizes counter space and achieves a custom, seamless look for your kitchen.
Microwave ovens often demand dedicated circuitry, but this isn't always a necessity. The National Electrical Code requires it for all fixed equipment, so a circuit must be set aside for any built-in oven. Small or older countertop models draw less power than modern full-size units.
Over-the-Range Microwave ovens and Advantium/Five in One ovens cannot be used on a counter or shelf and are not UL (Underwriters Laboratory) approved for this purpose. Keep in mind the underside is not flat on an Over-the-Range Microwave or Advantium/Five in One oven.