Microwave Wall Oven Combos: Sizes, Features and Installation
What a microwave wall oven combo is, how to size one for your cabinets, and how five models compare on features and installation.
- Four of the five combos here are 30-inch models. The KOEC727SPS is the 27-inch option.
- Lower oven sizes range from 4.7 to 5.3 cu. ft., and the microwaves on top are 1.4 to 1.7 cu. ft.
- Air fry is listed on the Frigidaire GCWM3067AF, LG WCEP6423F and KitchenAid KOEC727SPS.
- All five run on 240 volts; three list a 40-amp circuit and the two GE models list 30 amps.
A microwave wall oven combo stacks a built-in microwave on top of a full wall oven in one unit. You get two cooking spaces at eye level, free up the counter, and need only one cabinet opening. It is a popular choice in kitchen remodels where the cooktop and oven are separate.
This guide explains combo sizes, what features to look for and how installation works, and compares five models we carry from Frigidaire, LG, GE, GE Profile and KitchenAid, using the specs on each product page.
Our top picks at a glance
Compare them side by side
Air Sous Vide Pick: Frigidaire GCWM3067AF Gallery Microwave Combination Wall Oven
Frigidaire GCWM3067AF 30 inch Gallery Series Microwave Combination Wall Oven with 7 cu. ft. Total Capacity, Air Fry, Air Sous Vide, and Convection (Stainless Steel)
The GCWM3067AF is a Gallery series combo with a 5.3 cu. ft. convection oven under a 1.7 cu. ft. microwave, 7 cu. ft. in total. The oven offers air fry and air sous vide, self clean and steam clean, and it has a gliding rack system, three racks and a fingerprint-resistant finish. It needs a 240-volt, 40-amp circuit.
- Air fry and air sous vide
- 5.3 cu. ft. lower oven
- Self clean and steam clean
- Gliding rack
- No Wi-Fi
- 1-year warranty
Smart Pick: LG WCEP6423F Wall Oven and Microwave Combination
The WCEP6423F pairs a 4.7 cu. ft. convection oven with air fry and a 1.7 cu. ft. microwave. It has Wi-Fi, EasyClean and self clean, SmoothTouch glass controls and a PrintProof stainless finish. LG lists a 1-year parts and labor warranty plus 5 years limited on oven heating elements.
- Wi-Fi
- Air fry
- EasyClean and self clean
- PrintProof finish
- Smaller 4.7 cu. ft. lower oven
- Needs a 40-amp circuit
Classic Bake Pick: GE JT3800SHSS Built-In Microwave/Thermal Wall Oven
The JT3800SHSS has a 5 cu. ft. thermal (non-convection) oven below a 1.7 cu. ft. microwave with sensor cooking. The oven has self clean with a steam clean option. It uses a 28 5/8-inch cutout and a 240-volt, 30-amp circuit, which can make it a simpler swap in older kitchens.
- Sensor cook microwave
- Self clean and steam clean
- 30-amp circuit
- Simple controls
- No convection
- No air fry
Speedcook Pick: GE Profile PT9800SHSS Combination Double Wall Oven
GE Profile PT9800SHSS 30 inch Built-in Combination Double Wall Oven with 5.0 cu. ft. Capacity, 1.7 cu. ft. Microwave, True European Convection, Speedcook Technology and Halogen Heat, in Stainless Steel
The PT9800SHSS pairs a 5 cu. ft. oven with true European convection and a 1.7 cu. ft. upper oven with Speedcook technology, which uses halogen heat with microwave to cook faster and brown food. It has a temperature probe, proofing, self clean and steam clean, and it runs on a 240-volt, 30-amp circuit.
- Speedcook upper oven
- True European convection
- Temperature probe
- Proofing mode
- No air fry
- No Wi-Fi
27-Inch Pick: KitchenAid KOEC727SPS Smart Combo Wall Oven
KitchenAid KOEC727SPS 27 Inch Smart Combo Wall Oven with 6.4 cu. ft. Capacity, Air Fry Mode, Even Heat True Convection, Smart Appliance in PrintShield Stainless Steel
The KOEC727SPS is a 27-inch combo for openings narrower than the 30-inch standard. It has a 5 cu. ft. Even-Heat true convection oven with air fry and a 1.4 cu. ft. microwave with sensor cooking. It has Wi-Fi and works with Alexa and Google Assistant, plus a temperature probe and PrintShield stainless finish.
- Fits 27-inch openings
- True convection and air fry
- Wi-Fi and voice control
- Temperature probe
- Smaller 1.4 cu. ft. microwave
- Steam clean only, no self clean listed
Microwave Wall Oven Combos Compared
Frigidaire GCWM3067AF | LG WCEP6423F | GE JT3800SHSS | GE Profile PT9800SHSS | KitchenAid KOEC727SPS | |
| Model | GCWM3067AF | WCEP6423F | JT3800SHSS | PT9800SHSS | KOEC727SPS |
|---|---|---|---|---|---|
| Price | $3,414 | $3,415 | $3,593 | $4,673 | $3,298 |
| Lower Oven | 5.3 cu. ft. | 4.7 cu. ft. | 5 cu. ft. | 5 cu. ft. | 5 cu. ft. |
| Microwave | 1.7 cu. ft. | 1.7 cu. ft. | 1.7 cu. ft. | 1.7 cu. ft. | 1.4 cu. ft. |
| Cutout Width | 28 1/2" | 28 1/2" | 28 5/8" | 28 5/8" | 27" |
| Cutout Height | 41 1/4" | 43 7/16" | 42 1/4" | 42 1/4" | 41 5/16" |
| Convection |  | | Thermal oven | | |
| Air Fry | | | Not included | Not included | |
| Amps | 40 | 40 | 30 | 30 | 40 |
| View | View | View | View | View |
Combo vs Double Wall Oven vs Separate Microwave
A combo gives you a full oven plus a microwave in one cabinet opening. A double wall oven gives you two full ovens instead, which is better for big holiday meals but leaves the microwave to go elsewhere. A separate over-the-range or drawer microwave can work too, but it uses space somewhere else in the kitchen.
Combos make the most sense when you cook on a separate cooktop or rangetop and want everything at eye level. For more on the choice, see wall oven vs range and our guide to Sharp microwave drawers.
- Combo: oven + microwave, one opening
- Double wall oven: two full ovens
- Separate microwave: frees the wall oven space for one oven
Sizing and Installation
Measure the cabinet cutout, not the old oven's face. Cutout height matters most for combos because the microwave sits on top: the models here need about 41 1/4 to 43 7/16 inches of height. Width is usually 30 inches, with 27-inch models for older or smaller cabinets.
Combos are heavy and hardwired. Check the circuit before you buy: the GE models here list 30 amps, while the Frigidaire, LG and KitchenAid list 40 amps. Our guide to confirming model numbers before cabinetry explains why it pays to lock in the model early in a remodel.
How to Choose a Microwave Wall Oven Combo
- 01
Measure the cutoutCheck width, height and depth against each model's cutout specs.
- 02
Check the circuitConfirm 240 volts and whether you have 30 or 40 amps.
- 03
Pick oven featuresConvection, air fry, a temperature probe or Speedcook.
- 04
Consider smart featuresWi-Fi models let you preheat and monitor from your phone.
Our Picks by Need
Compare every microwave wall oven combo we carry.
Shop Microwave Wall Oven CombosFrequently Asked Questions
What is a microwave wall oven combo?
It is a single built-in unit with a microwave on top and a full wall oven below, installed in one cabinet opening.
What size are microwave wall oven combos?
Most are 30 inches wide. The KOEC727SPS in this guide is a 27-inch model for narrower openings. Check cutout height too, which runs about 41 to 43 1/2 inches here.
Do microwave wall oven combos need a special outlet?
They are hardwired to a 240-volt circuit. The models here list 30 or 40 amps, so check your existing circuit.
Which combos have air fry?
The Frigidaire GCWM3067AF, LG WCEP6423F and KitchenAid KOEC727SPS list air fry.
What is Speedcook?
Speedcook, on the GE Profile PT9800SHSS, combines halogen heat and microwave energy so food cooks faster and still browns.
