5 Best Built-In Microwave Convection Oven Combos (November 2026)
The best built-in microwave convection oven combos include the Frigidaire Gallery Series GMBS3068BF 2.2 cu. ft. for microwave capacity, the AAOBOSI 30 Inch Built-in Microwave Oven Air for broad cooking mode choice, and the KoolMore Reserve Built-in Microwave Convection Oven for a 24-inch air fry combo.
On this page (5 sections)
The best convection oven microwave combo built in for most kitchens is the KoolMore Reserve 24-inch model, which combines microwave, convection and air fry modes. If you want more microwave capacity and do not need convection, the Frigidaire Gallery holds 2.2 cu ft and has optional trim kits.
A built-in combo can save counter space while giving you more than one way to cook. If a gas range suits your kitchen, compare gas double oven ranges.
But these models differ in width, door style, cooking modes and outlet needs, so check the cabinet opening and electrical connection before you choose.
For a microwave-only built-in, see our guide to the best microwave oven built in. If your cabinet is set up for a 24-inch unit, our best 24 inch wall oven microwave combo guide covers more choices.
Our picks at a glance
-
1
Best for microwave capacityFrigidaire Gallery Series GMBS3068BF 2.2 cu. ft.
9.7/10 our score
See it on Amazon -
2
Best for broad cooking mode choiceAAOBOSI 30 Inch Built-in Microwave Oven Air
9.6/10 our score
See it on Amazon -
3
Best for a 24-inch air fry comboKoolMore Reserve Built-in Microwave Convection Oven
9.5/10 our score
See it on Amazon
- 4
Check itAAOBOSI 24 Inch Built in Microwave Oven
Best for a compact cooking combo - 5
Check itKoolMore 30 in. Built-in Microwave with Convection
Best for a 30-inch KoolMore option
Which built-in microwave convection oven combos stand out?
The strongest choice depends on whether you need convection, a particular width or extra microwave capacity. We compared the listed dimensions, cooking modes and power requirements to match each model to a clear use.
| Product | Best for | Capacity | Dimensions (W x D x H) | Installation | Our score |
|---|---|---|---|---|---|
| Frigidaire Gallery Series GMBS3068BF 2.2 cu. ft. | microwave capacity | 2.2 cu ft | 24 7/16 x 19 5/8 x 13 5/8 in | Built-in; trim kit sold separately | 9.7 |
| AAOBOSI 30 Inch Built-in Microwave Oven Air | broad cooking mode choice | 1.6 cu ft | 29.82 x 22.26 x 19.49 in | 9.6 | |
| KoolMore Reserve Built-in Microwave Convection Oven | a 24-inch air fry combo | 1.6 cu ft | 23.4 x 24.42 x 17.87 in | 9.5 | |
| AAOBOSI 24 Inch Built in Microwave Oven | a compact cooking combo | 1.6 cu ft | 23.82 x 22.26 x 19.49 in | 9.3 | |
| KoolMore 30 in. Built-in Microwave with Convection | a 30-inch KoolMore option | 1.6 cu ft | 29.9 x 25.4 x 19.1 in | 8.9 |
How we chose built-in microwave convection combos
We compared the stated capacity, dimensions, cooking functions and power connections against the needs of someone shopping for a built-in appliance. Models with convection cooking rank ahead of the Frigidaire microwave-only option for this search, while the Frigidaire stands out for its larger capacity.
Our score weighs specs and features against what you're shopping for. We did not test these appliances in a kitchen, so use the measurements and connection requirements to confirm fit before buying.
The best built-in microwave convection oven combos
These picks range from 24-inch combos with air fry to a larger microwave-only model. If you prefer a range, compare electric double oven ranges.
Start with the appliance that matches your cabinet and cooking needs.
Frigidaire Gallery Series GMBS3068BF 2.2 cu. ft.: Best for microwave capacity
- 2.2 cu ft capacity
- Sensor cook and reheat
- Built-in installation
- 27 in or 30 in trim kit sold separately
The largest stated microwave capacity in this group suits buyers who need room for larger dishes. It does not include convection cooking.
Pros
- Largest capacity in this group
- Sensor cook and reheat
- Trim kits available in 27 in and 30 in
Cons
- Trim kit sold separately
- Microwave only, without convection cooking
The Frigidaire Gallery GMBS3068BF is a microwave-only built-in, so it is not a convection combo. Its 2.2 cu ft capacity is the largest stated in this group, giving you room for larger dishes or more than one item at a time.
Sensor cooking adjusts the power and cook time for the food, and sensor reheat is among its listed programs. The touch controls include 11 power levels, quick start and auto defrost.
The unit measures 24 7/16 in wide, 19 5/8 in deep and 13 5/8 in high. The specified cutout is 24 3/4 in wide, 20 in deep and 16 3/4 in high, so compare those measurements with your cabinet before planning installation.
Frigidaire offers 27-inch and 30-inch trim kits separately. Choose this model if microwave capacity matters more than convection; look at the next picks if you want oven-style hot-air cooking.
AAOBOSI 30 Inch Built-in Microwave Oven Air: Best for broad cooking mode choice
- 1.6 cu ft capacity
- Convection, broil and air fry
- 10 cooking types
- Requires 20-amp plug
This 30-inch built-in combines microwave cooking with convection, broil and air fry modes. Its outward-downward opening door needs room in front.
Pros
- 10 listed cooking types
- Sensor cooking and reheat
- Includes baking tray and grill rack
Cons
- Needs a 20-amp plug
- Door opens outward and downward
The AAOBOSI 30-inch combo suits a kitchen with space for its nearly 30-inch width and a need for several cooking modes. It combines microwave heating with convection, broil and air fry, alongside functions such as sensor cook, sensor reheat and auto defrost.
Its 1.6 cu ft capacity is smaller than the Frigidaire microwave, but the AAOBOSI adds oven-style cooking. The outward-downward opening door needs clear space in front, so account for that when laying out nearby drawers or an island.
This model requires a 20-amp plug and lists 120 VAC at 60 Hz. Its dimensions are 29.82 in wide, 22.26 in deep and 19.49 in high; verify the cutout requirements for your cabinet before ordering.
Pick it if a 30-inch installation and many cooking modes fit your kitchen. For a similar set of modes in a narrower cabinet, compare the two 24-inch combos below.
KoolMore Reserve Built-in Microwave Convection Oven: Best for a 24-inch air fry combo
- 1.6 cu ft capacity
- Microwave, convection and air fry
- 175°F to 450°F range
- 20-amp NEMA 5-20P plug
The 24-inch model combines microwave, convection and air fry functions, with a stated 175°F to 450°F range. Confirm the outlet and cabinet fit before choosing it.
Pros
- Three cooking modes
- Temperature range stated
- CSA certification and 3-year parts and labor warranty
Cons
- Needs a compatible 20-amp outlet
- Measure the cutout and door clearance
The KoolMore Reserve is the top pick for a 24-inch built-in microwave convection combo with air fry. It combines microwave, convection and air fry cooking, with a stated temperature range from 175°F to 450°F.
The 1.6 cu ft interior is paired with a soft-close door. Its convection fan is rated at 1400 RPM, and the model includes sensor cook and a preheat function.
Power needs deserve special attention: this unit requires a 20-amp NEMA 5-20P connection. Its stated dimensions are 23.4 in wide, 24.42 in deep and 17.87 in high, so confirm the cabinet opening and plug placement before purchase.
KoolMore says the Reserve model is CSA certified and includes a 3-year parts and labor warranty. Choose it when you want a 24-inch format, several cooking modes and a defined temperature range.
AAOBOSI 24 Inch Built in Microwave Oven: Best for a compact cooking combo
- 1.6 cu ft capacity
- Convection, broil and air fry
- 10 cooking types
- Requires 20-amp plug
This 24-inch AAOBOSI has microwave, convection, broil and air fry modes. Its door opens outward and down, so check space in front of the cabinet.
Pros
- 10 listed cooking types
- Sensor cook and reheat
- Includes baking tray and grill rack
Cons
- Needs a 20-amp plug
- Door needs forward clearance
The AAOBOSI 24-inch model brings microwave, convection, broil and air fry modes to a narrower built-in format. It has 1.6 cu ft of capacity, 10 cooking types and 10 microwave power levels.
Its outward-downward opening door needs room in front of the cabinet. The stated product size is 23.82 in wide, 22.26 in deep and 19.49 in high; confirm the required cutout and door clearance with the installation instructions.
The model specifies a 20-amp plug at 120 VAC and 60 Hz. It includes a baking tray and grill rack, and its functions include sensor cook, sensor reheat, pizza, beverage heat and soften or melt.
Choose this model if its 24-inch size and cooking modes match your kitchen, and you prefer AAOBOSI's listed functions. Compare its required opening and electrical connection with the KoolMore Reserve before deciding.
KoolMore 30 in. Built-in Microwave with Convection: Best for a 30-inch KoolMore option
- 1.6 cu ft capacity
- Microwave, convection and air fry
- 1000 W microwave power
- 20-amp NEMA 5-20P plug
This 30-inch KoolMore offers microwave, convection and air fry modes with 1.6 cu ft of capacity. Confirm its dimensions and 20-amp outlet requirement before installation.
Pros
- Microwave and convection modes
- Air fry function
- Stainless steel interior
Cons
- Needs a compatible 20-amp outlet
- Check cabinet fit against stated dimensions
The KoolMore 30-inch built-in is a wider option with microwave, convection and air fry functions. It has 1.6 cu ft of capacity and 1000 W microwave power, with 10 power levels.
It measures 29.9 in wide, 25.4 in deep and 19.1 in high. The listed size is not a substitute for the cabinet cutout dimensions, so confirm those and the space needed for the door before installation.
This model requires a compatible 20-amp outlet for its NEMA 5-20P plug. Its stainless steel interior and turntable offer straightforward details, but its cooking program names are not specified here.
Choose it if you want a 30-inch KoolMore combo and have the correct outlet. The AAOBOSI 30-inch pick gives more detail about its cooking modes if that is a priority.
What should you check before choosing a built-in combo?
Check the cabinet opening, electrical connection and door clearance before comparing extra cooking functions. A model can match your desired width but still require a different cutout or outlet.
How do width and cutout size affect installation?
The stated appliance width is not always the same as the cutout width needed for installation. Frigidaire publishes cutout dimensions for the GMBS3068BF, while the dimensions for the other models describe the appliance itself.
Measure the cabinet opening at several points, then compare it with the manufacturer's installation requirements. Also check depth behind the cabinet face and space for the plug, especially for a deeper model.
If you are planning a 24-inch installation, read our guide to the best 24 inch wall oven microwave combo for more fit considerations.
Which cooking modes matter most?
Convection is the key feature if you want oven-style hot-air cooking in addition to microwave heating. The AAOBOSI and KoolMore combos here also list air fry, while the AAOBOSI models add broil and several preset cooking types.
The Frigidaire offers microwave features such as sensor cook and sensor reheat, but no convection mode. Learn more about the oven vs microwave difference if you are deciding whether you need a combo or a separate oven.
Does the power connection fit your kitchen?
The AAOBOSI combos specify a 20-amp plug, and both KoolMore combos require a NEMA 5-20P plug with a compatible 20-amp outlet. Check the circuit and receptacle before buying, and ask a qualified electrician if the connection is unclear.
A standard-looking cabinet opening does not confirm that the electrical setup is suitable. Plan the outlet location so the plug does not block the appliance from sitting correctly.
Will the door work with nearby cabinets?
Door direction and clearance can affect daily use. Both AAOBOSI models describe an outward-downward opening door, so leave space in front and avoid placing an obstruction directly below the appliance.
Check the installation guide for each model before finalizing cabinet plans. A clear path makes it easier to load dishes and reach the controls.
Is a built-in microwave convection combo right for your kitchen?
Choose the KoolMore Reserve if you want a 24-inch combo with microwave, convection and air fry, and your kitchen has the required 20-amp connection. Pick an AAOBOSI if its listed cooking modes or 30-inch size better fit your layout.
Choose Frigidaire when you want 2.2 cu ft of microwave capacity and can use a separately sold trim kit. For a small living space, compare the Best Microwave Convection Oven Combo For Apartments guide; for mobile kitchens, see Best Microwave Convection Oven Combo For RV Use.
The right choice comes down to the cabinet cutout, available outlet and whether convection cooking is a must. Confirm all three before you order.
Our top 3 picks at a glance
-
1
Best for microwave capacity
Frigidaire Gallery Series GMBS3068BF 2.2 cu. ft.
9.7/10 our score
See it on Amazon -
2
Best for broad cooking mode choice
AAOBOSI 30 Inch Built-in Microwave Oven Air
9.6/10 our score
See it on Amazon -
3
Best for a 24-inch air fry combo
KoolMore Reserve Built-in Microwave Convection Oven
9.5/10 our score
See it on Amazon
Frequently asked questions
What does a built-in microwave convection oven combo do?
It combines microwave heating with convection cooking in one built-in appliance. Convection uses circulating hot air, while microwave mode heats food with microwave energy.
Some combos add modes such as broil or air fry.
Check the cooking modes for the exact model, since features differ.
Does every built-in microwave have convection?
No. A built-in microwave can offer microwave cooking only, as the Frigidaire Gallery GMBS3068BF does.
Convection models add an oven function that circulates hot air.
Check the listed heating modes before buying if baking or roasting is part of your plan.
What outlet does a built-in microwave convection combo need?
Check the model's power requirements before installation. The AAOBOSI models here specify a 20-amp plug, and the KoolMore combos use a NEMA 5-20P plug that needs a compatible 20-amp outlet.
Have an electrician confirm the outlet if you are unsure.
How do I check whether a combo fits my cabinet?
Compare the appliance's width, depth and height with the cabinet cutout dimensions, and allow room for the door to open. The dimensions listed for an appliance may differ from its required cutout size.
For the Frigidaire model, the cutout dimensions are specified.
For other models, confirm the installation measurements before ordering.
Can I install a built-in microwave convection combo in an apartment or RV?
Possibly, if the cabinet, ventilation, door clearance and electrical setup meet the appliance's requirements. A built-in model can need a dedicated or compatible outlet and a precise cutout.
For smaller homes, compare our Best Microwave Convection Oven Combo For Apartments guide.
RV installations need their own fit and power checks.
