If you have ever wished your oven could do more, a Combi Steam Oven is worth understanding.
Thermador has built their Combi Steam Oven around a straightforward idea: steam should expand what an oven can do, not make it more complicated. The result is an appliance that handles everyday cooking techniques with noticeably better results, from roasting and baking to reheating and proofing, all in a format that integrates cleanly into a modern kitchen.
At BSC Culinary, steam ovens come up more and more in kitchen planning conversations, and Thermador’s version is one we recommend with confidence. Here is what you need to know.
Two Collections: Same Performance, Different Personalities
Thermador offers the Combi Steam Oven in two design collections. Both cook identically. The choice between them is purely about kitchen aesthetic and how you prefer to interact with your appliances.
Masterpiece
The Masterpiece collection is built for contemporary kitchens that prioritize clean, integrated design. Glass-forward surfaces, stainless steel accents, and a full-color touchscreen interface give it a refined, modern presence. The linear brushed stainless steel handle with chamfered edges adds a polished finishing detail without drawing too much attention to itself.
Professional
The Professional collection takes a bolder approach. Heavier hardware, a commercial-inspired visual presence, and solid cast metal knobs paired with a touchscreen display give it a more tactile, pro-kitchen feel. The radial brushed stainless steel handles with chrome end caps complete a look that coordinates naturally with a professional-style range and other bold appliances.
No Plumbing Required
One of the most practical details about the Thermador Combi Steam Oven is how it handles water.
Steam generation uses a removable 45-ounce internal water tank that you fill as needed. There is no dedicated waterline, no plumbing work, and no contractor coordination to make it happen. You simply fill the tank and cook.
This makes installation considerably more flexible, and it removes one of the most common objections people raise when first considering a steam oven.
Size, Capacity, and Cooking Modes
The Thermador Combi Steam Oven is 30 inches wide with a 2.8 cubic foot cavity, which is generous for this category. Multiple rack positions are supported by smooth, ball-bearing telescopic racks that slide in and out effortlessly, even with heavier dishes.
Inside, you have access to 17 heating modes covering steam, convection, roast, bake, broil, proof, defrost, and reheat, along with over 50 automatic steam programs that adjust time and temperature on their own based on what you are cooking.
For most homeowners, that range of modes means the steam oven handles a far wider variety of tasks than they initially expect.
What Steam Actually Does for Your Cooking
The real case for a Combi Steam Oven is in the results, and a few specific capabilities stand out.
No flavor transfer between dishes. The convection baffle system allows you to cook multiple dishes simultaneously, like a fruit pie, lemon garlic chicken, and sides, all at once, without flavors crossing between them. No temperature juggling required.
Reheating that actually works. This is one of the most underappreciated benefits of steam. Reheating steak, pizza, or a burger in a steam environment restores moisture and preserves texture in a way that a microwave or standard oven simply cannot replicate. Leftovers come out tasting close to freshly made.
Nutrient preservation. Steam cooking retains more of the natural nutrients in vegetables and proteins than dry heat methods, which matters for homeowners who are as focused on how their food nourishes them as on how it tastes.
Air Fry: A Genuine Differentiator
Thermador’s Combi Steam Oven includes a built-in air fry mode, and it is worth calling out specifically.
Thermador claims these are the only 30-inch wide models in the industry that combine a 2.8 cubic foot full steam convection oven with air fry capability. That combination in a single appliance, at that size, is not something other brands currently offer in this configuration. For homeowners who want to consolidate functionality without sacrificing results, this is a meaningful advantage.
Connected Cooking With Home Connect
The Thermador Combi Steam Oven connects to the Home Connect app, giving you smart device control over your oven from anywhere.
Practical uses include preheating the oven remotely before you get home, receiving cooking notifications, and sending curated recipe instructions directly from the app to the oven. The oven then sets the appropriate parameters automatically.
For homeowners who are already living in a connected kitchen, this fits naturally into that workflow.
Installation Details
A few practical points worth knowing before you plan:
- No plumbing required. The internal water tank handles all steam generation, as noted above.
- Electrical requirements. The unit needs a 240/208-volt, 20-amp dedicated circuit with a fixed connection.
- Flush or proud installation. A flush installation requires a 24.5-inch depth. A proud installation, where the oven extends slightly from the surrounding cabinetry, offers more flexibility on depth.
Beyond the Single Steam Oven: More Ways to Add Steam
If the Thermador Combi Steam Oven has you thinking more broadly about steam cooking, there are additional ways to incorporate it into a kitchen design.
- Combo steam oven units stack a steam oven on top with a full 4.5 cubic foot convection wall oven directly below, combining both in a single installation footprint. For homeowners who want maximum oven capacity alongside steam functionality, this is a compelling configuration.
- Steam built into a range. Thermador also offers ranges with a steam oven integrated directly into the unit, including a 60-inch model that brings both capabilities together in one professional-grade appliance.
Is a Thermador Combi Steam Oven Right for You?
This is an appliance that makes the most sense for serious home cooks who already push their main oven hard and want to expand what their kitchen can do. If you bake regularly, care about how reheated food tastes and feels, or want precise control over moisture and texture in your cooking, a Combi Steam Oven tends to change how you think about daily cooking rather quickly.
At BSC Culinary, we love demonstrating steam ovens in person because it is genuinely one of those products that becomes more compelling the moment you see and taste the difference. If you are planning a kitchen upgrade and want to explore whether a Thermador Combi Steam Oven belongs in your design, we invite you to schedule an appointment with our team in our San Francisco showroom.
Watch our video: The BEST Steam Ovens of 2026 — Thermador
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