A traditional oven is a workhorse. But it has limits — and if you’ve ever pulled out a reheated steak that came back dry, or wished you could roast and bake at the same time without one dish affecting the other, you already know what those limits feel like.
Thermador’s Combi Steam Ovens are built around a simple idea: steam should expand what an oven can do, not complicate it. The result is an appliance that handles a wider range of cooking techniques with better results than a standard oven can achieve — and does it in a format that integrates cleanly into a modern kitchen without requiring a plumber.
Here’s what you need to know.
Thermador offers the Combi Steam Oven in two collections: Masterpiece and Professional. Both cook exactly the same way — the choice between them is entirely about kitchen aesthetic and control preference.
The Masterpiece collection is built around clean, contemporary design. Glass-forward surfaces, stainless steel accents, and a full-color touchscreen interface give it a modern, integrated look that sits naturally in current kitchen styles. The handle is a linear brushed stainless steel with chamfered edges — refined without being flashy.
The Professional collection brings a bolder, more commercial-inspired presence to the kitchen. Solid cast metal knobs are paired with a touchscreen display for a more tactile control experience, and the robust radial brushed stainless steel handles with chrome end caps reinforce the pro-style aesthetic. If your kitchen leans toward a professional look, this is the collection that fits.
One of the most practical things about the Thermador Combi Steam Oven is what it doesn’t require.
Steam functionality runs entirely from a removable 45-ounce internal water tank — no dedicated water line, no plumbing work, no contractor coordination. You fill the tank, and the oven handles the rest. For homeowners who want steam cooking capability without the complexity of a plumbed installation, this is a genuinely meaningful advantage.
The Thermador Combi Steam Oven is 30 inches wide with a 2.8 cubic foot cavity — a notably generous capacity for a steam oven, and one of the largest in its class. Multiple rack positions are supported, and the racks themselves are smooth ball-bearing telescopic slides that extend fully for safe, easy access to heavy dishes without reaching into a hot oven.
The range of cooking techniques this oven supports is one of its clearest strengths.
17 heating modes cover steam, convection, roast, bake, boil, proof, defrost, and reheat — a comprehensive set that handles virtually every everyday cooking task. Beyond that, more than 50 automatic steam programs adjust temperature and timing automatically based on what you’re cooking, taking the guesswork out of steam cooking for those who are newer to the technique.
This is a feature that sounds minor until you experience it.
The Thermador Combi Steam Oven’s convection baffle system allows you to cook multiple dishes simultaneously — a fruit pie, lemon garlic chicken, and sides, for example — without any flavor transfer between them. No adjusting temperatures to compensate. No scheduling dishes around each other. Everything comes out the way it’s supposed to, at the same time.
One of the most underappreciated things a steam oven does is reheat food.
Where a microwave degrades texture and a conventional oven dries things out, the Thermador Combi Steam Oven reheats with even heat and controlled moisture — bringing leftovers back in a way that genuinely preserves their original taste and texture. Steak, pizza, burgers — they come back the way they were meant to be, not as a lesser version of themselves. Nutrients are preserved in the process as well.
The Thermador Combi Steam Oven connects to your home network and pairs with the Home Connect app on your smart device. From your phone, you can preheat the oven remotely, send recipe instructions directly to the oven, and access a library of curated recipes tailored to steam cooking. It’s a practical use of smart connectivity — not tech for its own sake, but features that fit naturally into how people actually cook.
The Thermador Combi Steam Oven includes a fully capable air fry mode, and the distinction is worth calling out: this is the only 30-inch steam convection oven in the industry with a 2.8 cubic foot cavity that is air fry capable. That combination of size, steam, and air fry in a single unit is genuinely rare, and it covers a wide range of everyday cooking needs that would otherwise require multiple appliances.
Installation is straightforward relative to other steam oven options on the market.
If you want to take the steam oven concept further, Thermador offers additional configurations worth knowing about.
Combo steam oven units pair a steam oven on top with a full 4.5 cubic foot convection wall oven on the bottom — two complete ovens in one built-in column. For households that do serious volumes of cooking, this is a compelling setup.
Thermador also offers ranges with a steam oven built in, including a 60-inch model that integrates the steam oven directly into the range itself — a fully unified cooking suite in a single appliance footprint.
This oven tends to resonate most with homeowners who already use their kitchen hard and want more from it — cooks who care about results, not just convenience. It’s also a natural fit for anyone building a Thermador kitchen suite who wants every appliance to work at the same level. And for households where reheating quality actually matters day to day, the steam reheat capability alone is worth serious consideration.
Steam cooking is one of those things that’s genuinely easier to understand in person than on a screen — and we’d love to show you what it can do.
At Atherton Appliance & Kitchens, we showcase Thermador’s Combi Steam Ovens in live kitchen displays so you can explore both collections, experience the controls, and talk through which configuration makes the most sense for your kitchen and your cooking style.
Visit our showroom or schedule a consultation to see the full Thermador steam oven lineup firsthand.
Watch our video: The Best Steam Ovens of 2026 — Thermador
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