Built-In Microwave With Air Fryer: Cabinet Openings, Trim Kits and What to Check

Built-in air fry microwaves are a small, thinly documented corner of the market. A dealer who can look at your cabinet may serve you better than any link here. Our where to buy guide compares the stores.

Which route is for me?

Pick your situation

• If you have a 30 in opening and will confirm the cutout → KoolMore KM-CWO30-SS · Seller data only

  View*(paid link to Amazon, opens in a new tab)Ad · paid link · check price & delivery on Amazon

• If you have a 24 in opening and will confirm the cutout in writing → AAOBOSI 24 in built-in · Seller data only

  View*(paid link to Amazon, opens in a new tab)Ad · paid link · check price & delivery on Amazon

• If the spot is above your stove

  See over-the-range models

• If you can leave the appliance on the counter after all

  See countertop picks

Wall oven combos and microwave drawers are different products with their own rules. See wall oven combos and microwave drawers.

What are the built-in options?

Comparison: KoolMore KM-CWO30-SS, AAOBOSI 24 in built-in, Panasonic HomeChef 4-in-1

Comparison	Seller data onlyKoolMore KM-CWO30-SS	Seller data onlyAAOBOSI 24 in built-in	Best if you have height to sparePanasonic HomeChef 4-in-1
Capacity	1.6 cu ft according to the seller	1.6 cu ft according to the seller	1.2 cu ft
Microwave watts	1000 W according to the seller	1000 W per the listing title	1000 W, inverter
Air fry watts	–	–	–
Outer size (W × D × H)	29.9 × 25.4 × 19.1 in	22 × 22 × 18 in	22.06 × 17.75 × 13.52 in
Functions	Microwave, convection, air fry according to the seller	Microwave, convection, air fry according to the seller	Microwave, air fry, convection bake, broil
True microwave	Yes	Yes	Yes
Price class	Premium	Premium	Premium
Best for	a 30 in cabinet opening, once a dealer or installer has confirmed the cutout	a 24 in opening, once the seller has confirmed the cutout in writing	kitchens with open space above the counter, or no wall cabinet over the spot
	On Amazon*(paid link to Amazon, opens in a new tab)Ad · paid link · check price & delivery on Amazon	On Amazon*(paid link to Amazon, opens in a new tab)Ad · paid link · check price & delivery on Amazon	On Amazon*(paid link to Amazon, opens in a new tab)Ad · paid link · check price & delivery on Amazon

The sizes for the first two are seller data, not a cutout drawing. Don't cut a cabinet from a listing.

• KoolMore KM-CWO30-SS. The KoolMore^* is sold as a 30 in built-in with microwave, convection and air fry. The seller says 1.6 cu ft, 1000 W, a 14.17 in turntable and a body of 29.9 × 25.4 × 19.1 in. The title names a NEMA 5-20P plug, a 20 amp type, so check that your outlet accepts it. KoolMore's own page refused our requests. Search excerpts mention a cutout of 28.5 in wide, 24.19 in deep and 19.19 in high. Treat those as leads and get the current drawing from KoolMore or a dealer.
• AAOBOSI 24 in. The AAOBOSI^* is sold as a built-in with 1.6 cu ft, a drop-down door, convection and air fry. The listing has loose ends: the title says 1000 W while a detail row says 1700 W, and the size row says 22 × 22 × 18 in. We found no manual or cutout drawing, so ask the seller for both before you order.
• Panasonic HomeChef. The listing^* names the NN-CV87QS. Panasonic's finder lists a trim kit for the sister model NN-CD87KS, but showed none under the NN-CV87QS. It is a good countertop combo, but not a safe built-in plan unless Panasonic confirms a kit. See our Panasonic HomeChef page.

What is a trim kit?

A trim kit is a company-made frame that closes the gap between a microwave and the cabinet opening. It is made for specific models. Panasonic's NN-CD87KS example:

The manual has Canadian references, so confirm the warranty wording for the US. Never build your own frame around a countertop model. Panasonic warns that blocked vents can make an oven overheat.

Here is what the companies say about cabinets:

• Breville BMO870: must not be placed in a cabinet.
• GE GCST10A1: not intended to be built in without a GE Appliances installation accessory. We found none named for this model.
• Ninja MW101: not to be wall mounted or installed inside a cabinet (UK guide).
• Panasonic NN-CD87: only the proper Panasonic trim kit.

For other models, assume no until a manual says yes.

What should I check before I buy?

• Opening. Measure width, height and depth, and compare with the company's cutout drawing.
• Venting. Leave the air paths the drawing shows.
• Power. Check the plug type and amps, and whether the outlet is reachable behind the unit. Ask a qualified electrician about any change. Our page on circuits and amps has the background.
• Height. The NKBA suggests the bottom of a microwave sit 3 in below the main user's shoulder and no more than 54 in above the floor. Below the counter, at least 15 in off the floor.
• Landing space. The NKBA recommends at least 15 in above, below or next to the handle side. Hot pans need somewhere to go.
• Who installs it. Good Housekeeping says built-ins require professional installation. Get a quote first.

Mistakes to avoid: boxing in a countertop combo, buying the kit for a similar model number (the NN-CD87KS and NN-CV87QS are treated differently), and cutting from a listing. We found no controlled comparison of any combo with a basket fryer.

• Built-in vs countertopChoose countertop if you want the simplest setup and the most air fry models. Choose built-in if a clear counter matters enough to pay for installation. A trim kit can put some countertop models in a cabinet, but it is model-specific. Breville rules out cabinets for its Combi Wave, and GE requires its own accessory, so check first.
• Wall oven comboTreat this as a renovation purchase. These units stack a microwave over a full oven, and the Frigidaire sheet we read asks for a 40 A, 240 V circuit and a 28 1/2 in minimum cutout width. Check which oven space air fries, since LG states both and other sheets do not say. Buy through a dealer. For a plug-in, a countertop combo is simpler.
• Microwave drawerSharp's SMD2499FS is the one microwave drawer with air fry we could confirm from a product sheet: 24 in, 1.4 cu ft, 900 W, with air fry presets. It needs a cabinet cutout and a floor that holds 125 lbs. Ask a dealer for a quote. If that is too much, a countertop combo or a built-in may suit you better.

Next step: measure the opening, get the cutout drawing, and let a dealer quote the job. If a counter spot would work, see the best combos. Also see our size guide, clearance guide and over-the-range versus countertop.